Model DXp-40 Operators Manual

NOTE: Click on any Table of Contents or Appendix Section Heading (following 3 pages) to navigate that Section

Table of Contents
SECTION 1 General Information ... .. .. ... ... ... .. ... .. ... .. ... ... .. ... ... .. .. ... ........ .. ... 1 .1 INTRODUCTION ........:.... .. .....:.. .. . .. . .... . .................... . ....... . . . ........ .... ........ .. . .. . 1 .1 .1 General Description . .. .. . ... ... ... ... ... .. . .. ... ... . .. ... ... . .. ... ... . .. ... . .... . . . . ... ... ... ... .. . ... ... 1 .1 .2 On-Line Diagnostics . ... ...... ... ... ... .. . .. ... ... ... ... ... ... . . . ... ... ... ..... . .. .... ... ... ... .. . ...... 1 .1 .3 Dynamic Digital Filter . . ...... .. . .. . . .. .. . .. . . . . .. .. . ... ... ... ... ... ... .. ...... ... . ... ... .. ...... . ...... 1 .1 .4 Digital Calibration .. ... .. . ...... .. . ... .. . . . . . . ... ... .. . ...... ... ... ... ... .. ...... ... .... .. . .. ... ... . ...... 1 .2 OPTIONS ........ .... . .......... ........ .. . .............. .. .. ........ .. . .................. .. ........ .. . ....... 1 .2.1 Mounting Options .. ... .. . ... ... .. . ... ..... ... ........ . .. ... ... . .. ...... . .. ... .. .... ... ... . .. ... . . . . . . ... . 1 .2.2 Display Window .. ... . .. .. . .. ...... . ........ .. . ........ ... ... .... .. ... ... . .. ... .. . ...... ... ... .. . ...... ... . 1 .2.3 Terminal Computer Interface . ...... .. . .. ...... ... ... ... . .. ... ... ... .. . .. ...... . ... ... .. . ...... .. . . 1 .2.4 MODBUS RTU Protocol ... ... . .. ........ . . . ... ... ... ... ... ... ... ... ... .. . .. ...... . ... ... .. . .. .... .. . . 1 .2.5 Allen-Bradley Remote I/O Network Interface .. ... ... ... ... .. . .. ... ... . ... ... .. . ........ . . 1 .3 DXp-40 SPECIFICATIONS ... . ................ .... ........ . .. ......... . .............................. 1 .4 DXp-40 ORDERING INFORMATION DXp-40 [M]-[C]-[P]-[S] ..................... 1 .5 WARRANTY POLICY . . . .... .. . . . ......... ......... .. ........ . .. ....... .. . ...... . . . .......... .. ....... . . 1 .6 FIELD ENGINEERING . ........ . .......... . ....... .. .. .. .. .. . . . ....... . . . ...... . . .......... . . . ....... . . SECTION II Installation ... ... .. .. . ..... ..... ..... . . . ........ ... .. ... .. ... ... ... .. .. . .. . . .. . .. ....... 2 .1 INTRODUCTION ......... . .. ...... . .................. .......... . ......... . . ....... .. .......... . ......... . . 2.1 .1 General .... ... ........ ... ...... ... ...... ... ........ . .. ... ...... .. . ... ... ... ........ ... ...... . .. ...... ... ... ... .. 2.2 MOUNTING ...... . ...... .. .. ........ . .......... .................. . ....... .. . ........ ............ . ......... . . 2.3 ELECTRICAL ............. .. ........ . ......... . .... .... .......... . ......... . . ....... ............ . ......... . . 2 .3 .1 Transducer Inputs . ... ..... . .. . . . . ... .. . .. ........ . ........ . ........ ...... ... ... ...... ... ...... ... ... . .. . . 2.3.2 Serial Communication ... ... ... ... ........ ... ... ...... ... ... ... ... .. . ........ ...... ... ...... ... ... ... .. 2.3.3 Mains (AC) Power (Figure 2-4) ...... ... ... ........ . ...... ... ........ ... ...... ... ...... ... ... ... .. 2.3.4 Auxiliary 1/O Ports ....... ... ... ... ... .... .... ... ... ...... .. . ... ... ... ........ ... ...... ......... ... ...... .. 2.3.5 Optional Analog Output ... ... ... ........ ... ... ........ . ... ..... . ........ ... ... ... . . ....... ... ...... .. 2.3.6 Optional Remote Inputs ... ... . .. ........ ... ... ...... ... ... .. .... ... ..... ... ...... ......... ... ... ... . . 2.3.7 Optional Discrete Outputs ... ... ...... .. ... . . . ... ... .. . ... ... ... ... ..... . .. ... ... . .. ...... ... ... ... . . SECTION 111 Calibration 3.1 GENERAL ........... . .......... ........ . .. ... . ... . ........ .......... . .. ....... . ........ .. .......... ... ....... 3.2 SETUP PARAMETERS ... . ....... .. . ....... . ... . ...... .......... . .................. . . . ................. 3.2.1 Calibration Type .. ... . .. .. . ...... ... ... ... .. ... ...... .. . .. .. . . . . . ..... ... . .. ... ... ... ... ... ... ... ... ... ... . 3.2.2 Number Of Load Cells . ... . .. ... . .. . . . ... ........ ... ...... ... ... ... .. . .. ... ... ... .... ... ........ . ...... 3.2.3 Display Units .. ...... . . . ........ . ...... .. . .. ... ........ ... ...... . .. ...... . .. . . ...... . .. .... ... . .... . .. . ...... 3.2.4 Decimal Point Location .. . ...... .. . ........ ... ... .. . . . .. . . ... . . ... . .. ........ . .. .... . . . ........ . ...... 3.2 .5 Capacity . ... .. . .. ...... ......... ... ...... ... . . ... ... ... ... ...... ... ...... .. . ..... ... .. . .. .... ... ........ . ...... 3.2.6 Count By ... ... ........ . .. ...... ... ...... ... ... ..... ... ... ...... ... ...... .. . .. ... ...... ... ... ... ...... .. . ...... 3.2.7 Zero Band . ... ...... .. . ........ ... ...... ... ........ ... ...... ... ... ... ...... ........... ... ... . ... .. . .. . . . . . . . .. 3.3 MILLIVOLT PER VOLT TYPE CALIBRATION (Optional) ... . ............ .......... . .. . 3.3.1 Load Cell Calibration Data .. ... ........ ... ........ . .. ...... ... ... ...... .. . .. .... ... ...... ... ... ... .. 3.3.2 Entering mVN Calibration Points . .. . .. ... ..... . .. .... .. . .. .... .. ... .. . ... ... ... ... ... ... ... ... .. 3.3.3 Acquire Deadload .. .. . .. ... ... . . . .. ... .. . ........ ... ... ... . .. ... ... .. . .. ... ... ... ......... ...... ... .. 3.4 DEADLOAD TYPE CALIBRATION ..... . ........ .......... ......... ....... . .. .. ......... ......... 3.4 .1 Perform Corner Test (Sensitivity Adjust) . ... ... ... ... ... .. . .. ... ... ... ... . .. . .. ...... . .. .... 3.4.2 Acquire Zero . . ... ... .. . ..... . .. . ...... .. . .. ... ... .. . .. ... ... ... ... .. . ... ... ... ..... . .. .... .. . ...... .. . .. ... . 3.4.3 Span Point Entry .. ... ... ... .. . .. . ... .. . .. ... ..... . .. . .. . . . . .. . .. . .. . .. ... ... ... .. . ... . .. ... ... ... .. . ... ... Page 1-1 Page 1-1 Page 1-1 Page 1-1 Page 1-1 Page 1-1 Page 1-1 Page 1-1 Page 1-1 Page 1-1 Page 1-3 Page 1-3 Page 1-3 Page 1-4 Page 1-5 Page 1-5 Page 2-1 Page 2-1 Page 2-1 Page 2-1 Page 2-2 Page 2-2 Page 2-2 Page 2-3 Page 2-3 Page 2-3 Page 2-3 Page 2-3 Page 3-1 Page 3-2 Page 3-2 Page 3-2 Page 3-2 Page 3-2 Page 3-2 Page 3-2 Page 3-2 Page 3-4 Page 3-4 Page 3-4 Page 3-4 Page 3-8 Page 3-8 Page 3-8 Page 3-8

SECTION IV Operation ............. ... .. ... ... ................ ...... ..................... ...... . . .. Page 4-1
4.1 4.2 4.3 4.4 4.5 4.6 4.7

GENERAL .. . .. . . .. ......... ..................................................................................... Page GROSS WEIGHT WEIGHING .................. ....................................................... Page ZERO OPERATION .................................. ....................................................... Page NET WEIGHT WEIGHING ............................................................ .............. .. ... Page TARE OPERATION ...................................................................... ................... Page VIEW INDIVIDUAL CELL DATA ................................................... ................... Page ERROR DETECTION AND CORRECTION ................................. ................... Page

4-1 4-1 43 4-3 43 43 43

SECTION V Digital Filtering .. . . . .. . .. ..... . .................. ........................... .......... Page 5-1

5.1 5.2 5.3

OPTIONAL DYNAMIC FILTER ........................................................................ 5.3 .1 Band Filter .. .......... . ...... .......... ......... . ..... . .... ...... ...... ....... ...... . . . ... . . . ...... ..... 5.3.2 Noise Band ........... . ...... .......... ......... . ..... . .... ... ... . . . ... . . . . ... . ..... . ..... .. . ...... ..... 5.3.3 Response .......... ... . ...... .......... .... . ... . . ..... . .... . ..... . ..... ....... ...... . ....... . ...... ..... 5.3.4 Default Parameters ...... .......... ......... . ..... . .......... . ..... ....... ...... . ...... . . ...... .....

GENERAL .................... . .. ...... . ........................ .............................. ................... Page FILTER PARAMETERS ................... . . .. . . . .. .. .................................. ................... Page Page Page Page Page Page

5-1 5-1 5-3

5-3 5-3 5-3 5-3

5-4 5-4

5.4 5.4

MOTION DETECTION (Standard) ............................................... ................... Page OPTIONAL SECOND FILTER ...................................................... ................... Page

SECTION VI Optional Diagnostic Testing ...................................... .......... Page 6-1

6.1 6.2

GENERAL ........................................................................................................ DIAGNOSTIC TESTS ..................................... ................................................. 6.2.1 Load Shift ... ...... . .... .. .... ... . . ..... . . . .. . . .. . ..... ....... .... . ..... . ...... . . .... . . . ..... . ...... ..... 6.2.2 Zero Shift .... ..... . . .......... ..... ..... ......... . ................ . ..... . ...... . . .... . .. ..... . . ..... ..... 6 .2 .3 Drift Test ..... ...... . .......... .......... . ........ . ............ .... . ..... . ........ .... .. . ...... . .......... 6 .2.4 Noise Test ... ..... . .......... ...... ..... ........ . ....... ..... .... . ...... ........ ...... . ...... . ....... .. . 6.2.5 Overload . ..... ..... . .... ...... ...... ..... .... .... . ....... ..... .... . ....... ....... ... . .. . .. . ... . ....... ... 6.2.6 Recall Values .... . .... . . .... ... . . . . .... . ... ..... . ...... ..... . . .. . .. ... . . .. ... . . .... .. . ...... . ....... ... 62.7 Degrade Mode Function .... .... . .... .... . . ...... . .... .... . . ...... ....... ...... . ...... . ....... ... 6.2.8 Remote Input Enables . ...... ..... .... ..... . . ..... . .... ...... ...... ....... .... .. . ....... . .........

Page Page Page Page Page Page Page Page Page Page

6-1 6-3

6-4 6-5 6-6 6-7 6-8 6-9 6-10 6-11

SECTION VII Serial Communication ........................ ..... ....... ..... ....... .. ... .. . Page 7-1
7.1 GENERAL ........................................................................ ............................... 7.1 .1 LCp-400 Digi System Network. ... ...... ...... .......... . ..... . .............. ...... . ...... ... 7.1 .2 Standard Simplex Output (Continuous Output) . . ..... ........ ....... ...... . ...... ... 7.1 .3 Optional Computer/Terminal Interface . ... .... ...... . ..... ............... . ..... . ...... ... 7.1 .4 Optional Modbus Protocol ... .... ..... ...... ............... . ..... ............... . ..... . ......... 7.1 .5 Optional Allen Bradley Remote I/O ..... ............... . ....... ............. . ...... .. ....... Page Page Page Page Page Page 7-1 7-1 7-1 7-2 7-5 7-9

SECTION VIII Process Control ........ .. ......... ..... ... ...................... .............. .. Page 8-1
8 .1 8 .2 8.3

OPTIONAL DISCRETE INPUTS and OUTPUTS ........................................... Page 8-3 8.3.1 Inputs ... ...... ........... . ..... . ..... ..... .... ..... ...... . .......... ...... . ..... . ...... .... . ... . .. . . . . . . ... Page 8-3 8.3.2 Outputs ....... ...... . ... . ..... . ..... .. . . . ... . .... . ..... . . . . . ... . ... ...... . ..... . . ..... . ....... . ...... ..... Page 8-4

GENERAL ............................................................................ . ...... . . . . ......... ....... Page OPTIONAL ANALOG OUTPUT ...................................................................... Page

8-1 8-2

Appendix A - Spare Parts, Docurimentation, and Accessories Appendix B - Outline and Wiring Drawings

Trademark Usage Acknowledgements

Allen-Bradley is a trademark of Allen-Bradley Company, Inc. PLC and PLC-5 are trademarks of Allen-Bradley Company, Inc. Modbus is a trademark of Schneider Automation

1 .1 INTRODUCTION

SECTION I General Information

1 .1 .1 General Description The DXp-40 transmitter (Figure 1-1) is a microprocessor based device designed to convert the mV/V signal from up to four individual strain gage type force transducers (load cells) into a digital signal repreweight, or percent of span senting force, Individually regulated, fault promeasurement units . excitation is supplied to each tected 10 Vdc . Units operate at either 115 or 230 Vac . transducer DXp-40 transmitters are housed in NEMA 4 Standard enclosures . NEMA 4X or explosion-proof enclosures are available as options . The digital RS-485 serial output port is configured for various baud rate and protocol selections using a series of DIP switches. Entry of calibration data, diagnostic parameters, and filter selections is accomplished using a series of pushbutton switches . Figure 1-2 presents an overall flow diagram for establishing the calibration and system operating parameters which will be discussed in the following chapters . An internal multi-line LCD display is provided for viewing the setup sequence, diagnostic information, and live operation . Instrument features include an RS 485 serial port with BLH Digi-System network or a simplex output protocol, four A/D converter channels, 10 volt excitation per channel, digital filter, and a NEMA 4 mild steel, painted enclosure . Standard instruments are designed to meet Class I, II, Division 2, Group A-G hazardous location requirements . 1 .1 .2 On-Line Diagnostics Weigh system diagnostics can be communicated from the DXp-40 serial port to a host computer . This real time information regarding system performance enables the host process computer to notify an operator and/or re-configure the system to go into degraded mode operation . 1 .1 .3 Dynamic Digital Filter The dynamic digital filter uses statistical characterization of process noise to derive optimum filtering settings. Once the noise is characterized, the operator selects the combination of averaging and filter cutoff bands needed to maintain both display stability and fast response time for better set point control . 1 .1 .4 Digital Calibration Digital calibration uses a factory calibration curve embedded in firmware to establish a reference between weight (force) and mVN. This allows an operator to set-up and calibrate a weigh system without the need for deadweights or other time consuming calibration methods . For systems with mechanical interactions, this calibration method can be modified to correct for system non-linearities
Page 1 - 1

Figure 1-1 . DXp-40 Weight Transmitter

1 .2 OPTIONS
1 .2.1 Mounting Options For corrosive, hose down, or sanitary environments, a NEMA 4X stainless steel enclosure is available . An explosion proof enclosure is available for Class l, II, Division 1, Group B-G locations . Note: BLH 406 or 408 Intrinsic Safety Barriers must be specified for weigh systems located in a Division I area. 1 .2.2 Display Window To allow viewing of the internal multi-line display at all times, units may be ordered with a front door panel polycarbonate window. Window units also have a brighter vacuum fluorescent type display panel for even greater visibility . See paragraph 1 .3 for display specifications and Figure 2-1 for outline dimensions . 1 .2.3 Terminal Computer Interface The terminal/computer interface option provides a simple mnemonic half-duplex ASCII communications protocol via a built-in macro language consisting of 1 to 3 character command strings (reference Table 7-3). This powerful feature allows direct keyboard control (using easily remembered commands) of DXp-40 operation and recall of weight values (gross, net, tare, zero, balance, etc.) Easily learned macro language syntax greatly simplifies the writing of a host computer communication interface (customer supplied) .

p O O Q

98

10

10 111

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10
10 10
10

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11 10

10 !0 11 10
"

0 10

10

e0 10

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O

0
10

1 1 10
10

to

j to

j to

d C Y C
80 -6-

18

~1ro

12

1/

12

0 ~1

10 10
10

210

s 0 10 10 t0

18

10
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10

12

4
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24
10 to c

10
18

10
7781

11
0

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Figure 1-2. DXp-40 Calibration and Configuration Page 1 - 2

1 .2.4 MODBUS RTU Protocol MODBUS is often recognized as an industry standard method of digital communication protocol between a master or host computer and a slave device . This protocol was originally developed by Modicon to communicate discrete and analog information .-between PLCs. As implemented in the DXp-40, this protocol efficiently communicates weight and diagnostics information to a MODBUS driver equipped host. 1 .2.5 Allen-Bradley Remote I/O Network Interface The Allen-Bradley Remote I/O interface is a communication link that supports remote, time critical I/O control communications between a master processor and a remote I/O slave . It is typically used to transfer I/O bit images between the master and slave.

The DXp-40 represents a quarter (1/4) Rack of discrete I/O with 32 bits of input and output image files to the scanning PLC . All weight data and status information uses discrete reads and writes to communicate scale information to the PLC in the shortest time possible. Discrete transfers also are used to upload and download non-time critical information such as calibration and lower priority diagnostic data.

1 .3 DXp-40 SPECIFICATIONS
Performance
Internal Resolution 4,194,304 total counts 3,000,000 total counts Max . Display Resolution Max. Resolution Per Channel 750,000 counts Conversion Speed 50 msec (20 updates/sec) 0 .0011% full scale Sensitivity (Noise) (max 16 counts w/o filter) 35 mV/channel Full Scale Range Dead Load Range 100% 10 M-ohms, min . per channel Input Impedance 10 V 2 x 350 ohm load cells, Load Cell Excitation 65 mA/channel max user configurable on each channel Remote Sense 0 .0015% of full scale Linearity Calibration Repeatability 0 .3 gV per count 50 to 6400 msec Software Filter (Std .) Dynamic Digital Filter (Opt.) multi-variable up to 64 seconds Span2ero Step Response Common Mode Rej . Normal Mode Rej.

Relay Outputs (optional)

Closed Contact or Solid State

28V actdc @ 0 .4 amps (max .) 110/220 Vac @1 .0 amp

12-24 Vdc Input or TTL Open Collector less than 5 .0 Vdc, sink 3 mA (min) Logic'0' (Low) Logic'1' (High) 10 to 28 Vdc Mechanical Relay Relay '0' dosed (one side = digital common, the other side = input) Relay '1' open (input internally pulled up)

Digital Inputs (optional)

BLH Digi-System Network

Type Baud Data Format

RS-485 half duplex (multi-drop) 9 .6K, 28 .8K, and 56 .7k proprietary RS-485 simplex 1200 or 9600 7 data bits even parity stop bit RS-485 half duplex 1200 or 9600 duplex command/response format 7 data bits even parity stop bit RTU, protocol - slave represents 1/4 rack of discrete data also supports block transfer approx . 12 .0 Ib

Temperature Coefficient

Standard Simplex Data Output (Transmit Only) '!'

2ppM`C one conversion 100db@60Hz 100 db above 35Hz -10 to 55C (12 to 131F) -20 to 85C (-4 to 185F) 5 to 90% rh, non-condensing 117/230 15% 50/60 Hz 12 watts max EEPROM shielded from typical industrial interference see outline dimensions - Figure 2-1 2 columns of 20 characters each 4 'soft buttons' 16 bit digital to analog 0-10V (25k ohm min load) 4-20 mA (600 ohm max load) Page l - 3 Type Baud Data Format (Selectable) ASCII

Environment

Operating Temperature Storage Temperature Humidity Voltage Power Parameter Storage EMI/RFI

Terminal/Computer Interface
Interface Type Baud Protocol ASCII

Enclosure

Special Protocol (optional)

Modbus

Dimensions High-Contrast LCD or Optional Vacuum Fluorescent Interface Type Voltage Current

Internal Display/Operator Interface

Special Interface (optional)

Allen Bradley Remote 1/O

Weight

NEMA 4/4X

Isolated Analog Output

1 .4 DXp-40 ORDERING INFORMATION

DXp-40 [M]-[C]-[P]-[S]-[O]

[M] Mounting (1) NEMA 4 painted - standard

(2) (3) _ (5) (8) (9) (11)

NEMA 4X stainless steel NiEMA 7 & 9 EX Enclosures for Class I, II, DIV . 1, 2, Grp . B - G #2 with Polycarbonate Window and integral VFD display #1 & FM/CSA approval (Class I II 111, Div 2, Group ABCD FG) #2 & FM/CSA approval (Class I II 111, Div 2, Group ABCD FG) #9 with Polycarbonate Window and integral VFD display

[C] Communication (1) RS 485 Network (2) #1 and Terminal/Computer Interface, ASCII protocol (4) Allen Bradley Remote I/O (Note: RS-485 Deleted) (5) #1 and MODBUSTm RTU (may require RS-485 to RS-232 serial conversion)

[P]Process Output (1) None

(2)

(3)

0-10V/4-20 mA Analog (includes switchable filter) & 4 Inputs/Outputs With Dry Contact Relays (not available with FM approval) 0-10V/4-20 mA Analog (includes switchable filter) & 4 Inputs/Outputs With Solid State Relays

[S]Software (7) Standard Includes :

Keypad Calibration Dynamic Digital Filtering On-Line Diagnostics Degrade Mode Software

[O]Calibration (1) Default Calibration Accessories

Conduit Fitting Kit (6 connectors) P/N 465231 Cable Fitting Kit (6 connectors) P/N 465232

1 .5 WARRANTY POLICY
BLH warrants the products covered hereby to be free from defects in material and workmanship . BLH's liability under this guarantee shall be limited to repairing or furnishing parts to replace, f.o.b. point of manufacture, any parts which, within one (1) year from date of shipment of said product(s) from BLH's plant, fail because of defective workmanship or material performed or furnished by BLH . As a condition hereof, such defects must be brought to BLH's attention for verification when first discovered, and the material or parts alleged to be defective shall be returned to BLH if requested . BLH shall not be liable for transportation or installation charges, for expenses of Buyer for repairs or replacements or for any damages from delay or loss of use for other indirect or consequential dam ages of any kind. BLH may use improved designs of the parts to be replaced . This guarantee shall not apply to any material which shall have been repaired or altered outside of BLH's plant in any way, so as in BLH's judgment, to affect its strength, performance, or reliability, or to any defect due in any part to misuse, negligence, accident or any cause other than normal

and reasonable use, nor shall it apply beyond their normal span of life to any materials whose normal span of life is shorter than the applicable period stated herein . In consideration of the forgoing guarantees, all implied warranties are waived by the Buyer, BLH does not guarantee quality of material or parts specified or furnished by Buyer, or by other parties designated by buyer, if not manufactured by BLH. If any modifications or repairs are made to this equipment without prior factory approval, the above warranty can become null and void.

1 .6 FIELD ENGINEERING
Improper DXp-40 installation or usage may result in system damage. Please follow instructions carefully . BLH Electronics, Inc. will not accept any liability for faulty installation and/or misuse of this product. Authorized BLH Field Service Engineers are available around the world to install DXp-40 transmitters and/or train factory personnel to do so. The field service department at BLH is the most important tool to assure the best performance from your application . Field service phone numbers are listed below.

Notice: BLH Electronics, Inc. makes no representation or warranties of any kind whatsoever with respect to the contents hereof and specifically disclaims any implied warranties or merchantability or fitness for any particular purpose . BLH Electronics, Inc. shall not be held liable for errors contained hererin or for incidental or consequential damages in connection with the furnishing, performance, or use of this publication or its contents. BLH Electronics, Inc. reserves the right to revise this manual at any time and to make changes in the contents hereof without obligation to notify any person of such revision or changes .

Call (Factory Number) (781) 821-2000 Ask for Field Service Midwest (614) 476-6453 Southeast (803) 851-7470 In Canada, Call (416) 251-2554 or (800) 567-6098 Toll Free

SECTION II Installation
2.1 INTRODUCTION
2.1 .1 General The DXp-40 is designed to be installed within the length of the load cell(s) cable which is normally 35 ft or less. Standard NEMA 4 or optional NEMA 4X enclosures are suitable for outdoor or washdown type environments . Both enclosures are provided with prepunched holes for installing conduit or cable fittings and holes for mounting to a bracket or wall.

2.2 MOUNTING
The NEMA 4 and NEMA 4X enclosures are equipped with four pre-punched holes for mounting to a wall or bracket . A U-bolt can be used for mounting to a pipe support . The instrument should be installed in a vibration-free location within the normal length of the load cell cables . If conduit is used, drains should be provided to reduce the possibility of condensate entering the enclosure . Outline dimensions for the standard DXp-40 transmitter are presented in Figure 2-1 .

NOTE : Outline dimensions shown with optional display window. Dimensions in inches.

Figure 2-1 . DXp-40 Outline Dimensions

Page 2-1

W W ! s

t? (A 9 R..NW LAJ

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W N V) 1 ! I

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Figure 2-2. Load Cell Connections

2.3 ELECTRICAL
2.3.1 Transducer Inputs Up to four load cells, one per channel, can be connected to the DXp-40. Connect individual load cells directly to the circuit board connectors as shown in Figure 2-2 . Excitation and signal connection locations are clearly marked according to function and standard color code. When remote sensing is not used (most cases), connect -SENSE to -EXCITATION and +SENSE to +EXCITATION. Note: If tension load cells are used, signal leads (red/white) must be reversed. If a deadweight or substitution method of calibration is being used, the load cell cable can be shortened as required . The leads should be re-tinned before the final connection is made.

NOTE: When tension or universal type load cells are used, it may be necessary to reverse the polarity of the signal leads to obtain a positive signal input to the DXp . NOTE : All system load cells must be connected during power-up in order to turn on all A/D channel inputs . 2.3.2 Serial Communication A terminal connector is provided for RS-485 wire connections (Figure 2-3). Multiple DXp transmitters, networked together, are wired in a parallel configuration with a termination jumper installed on the last instrument. A pair of twisted wires (20-24 gauge, Beldon #9501) is all that is required for interconnection . Communication lines should not be run near ac voltage power lines.

00

e
0

0 0

0 0 0

RTS TxD RxD GND-'

BAUD SEL RATE ADDR 123145678

SWa

SW2
RESET

SW3

Figure 2-3. Serial Output Connections Connections (Shaded) Page 2-2

SIP

115/220 VAC 50-60 Hz WARNING

C IECK POQTION OF VOL .TAOE ACTOR SNRTCti EIEFORE POWER 6 APPUM

1/4 A SB 250 VAC

Figure 2-4 . Ac Power Connections and Fuse 2.3.3 Mains (AC) Power (Figure 2-4) A screw terminal is provided for permanent transmitter power connection . All units are shipped from the factory configured for 115 Vac operation . To select 230 Vac operation, change SW1 on the base or 'mother' board (see Figure 2-4) to the 230V setting . The unit will operate within specification at 50 or 60 Hz. Before connecting power to the unit, verify that the proper power selection has been made. The two position terminal block is equipped with a clear plastic cover to prevent operator injury. Cable can be either solid or stranded 12 or 14 gage with a ground conductor. The transmitter is protected with a 1/4 amp slow blow fuse, located adjacent to the mains terminal block. If the fuse opens, replace it with the same type and current rating . 2.3.4 Auxiliary 110 Ports The auxiliary I/O port connections are factory test ports and are not useful to an operator . 2.3.5 Optional Analog Output With the analog option installed, a three position terminal connector is provided for 4-20 mA, 0-10 V, and common connections (Figure 2-5). As with serial communication, the wiring should be routed away from ac power lines and other sources of EMI . The current output is essentially immune to noise and can be transmitted long distances . The voltage output is susceptible to EMI/RFI and should be used only for short distances . Always use twisted pair, shielded cable. 2.3.6 Optional Remote Inputs If the remote input option is installed, the gross/net, zero, tare, and filter functions can be activated using external push button switches or TTL signals . When using an external TTL device, 5 Vdc must be supplied and the device TTL common connected to the DXp-40 common connector. Inputs are designated as digital (DIG) common and 1-4 (Figure 2-5) and function as defined in the following table : Input # DIG IN 1 DIG IN 2 DIG IN 3 DIG IN 4 Open Gross -----Filter 1 Closed Net Zero Tare Filter 2

2.3.7 Optional Discrete Outputs Units equipped with optional outputs have either four, dry contact, 28 volt (ac/dc) relays capable of handling 0.4 amps each or four, solid state, 117 Vac triac relays capable of handling 1 amp each. Customer ordering specifications (paragraph 1 .4, topic 'P') determine which type of realys are installed . Figure 2-5 shows the relay output wiring configuration . Paragraph 8.2 describes how the relays can be configured for different uses, depending upon the system application . Units are factory set in the normally open configuration . NOTE: Discrete outputs are not available with mounting options 8 and 9 (see paragraph 1 .4) .

Analog Outputs
~j 7

Remote Inputs
U Z 2 2 2 U (7 C7 C7 U
'f N! N .-

Relay Outputs
U

U Z U

a a a a s

& 9V

> > & e '

Figure 2-5 . Optional I/O Connections Page 2-3

SECTION III Calibration

3.1 GENERAL
Calibration is the fourth step in the DXp-40 parameter entry menu (Figure 3-1). Setup and calibration is accomplished easily using the internal LCD display and its three switches. Complete calibration is accomplished in two phases, scale setup and either millivolt per volt or deadload calibration as shown in Figure 3-2 . Use the full calibration flow diagram insert on the following page for guidance throughout the calibration procedure.

Main Menu (Accessed from Operation Mode)

"100000 LB GROSS ND GM SRO li
MM

o DIGITAL FLTER SETUP YES NO DOT

sm

LIVE WEIGHT MW MW SWt M _ SW2 NET _ SW3 ZERO . .

DISPLAY, GROSS (NODE Advance To DglW Flier Setup Unless Error Dlaplny Ixlvidusl Load Gls Switch To Net Mode Push To Zero

lW2

YES to enter/alter Digital Filtering Parameters MENU MENU _ Advance To 'Cell DkW=tlce SWI YES _ Enter Or Alter Filter Parameters Go To Col Dtagmostics SW2 NO _ SW3 EXIT .. Return To Live operation CHECK : Load Shn Zero Shift, Drift, Note, Raw Data MENU MENU - Advance To 'Do Celbratlon' SWI YES _ Perform Dlenostlc Evaluation Go To Do calibration SW2 NO _ SW3 EXIT .. Return To Uve Operation

CELL DIAGNOSTICS NO EXIT YES

DO CALIBRATION? EXfT YES NO

YES to Perform System Calibration MENU MENU - Return To Uve operation SWf YES _ Enter Or Alter Calabretion Set*W SW2 NO Return To Uve Operation SWS EX r _ Return To Uve Operation YES To Enter/Alter Analog Output Parameters MENU M U - Advance To 'Setpohts? Swl YES - Enter/Alter Anebg output Parameters SW2 NOGo Tb Seypolrda? SW3 EXIT - Return To Live Operation YES To Configure Relay Output Ftnctlons MENU MENU - Advance To MODBUS Interface? SWt YES - Configae Set Point Relay outputs MW NO Go To MODBUS Interface? SW EXIT .. Return To Uve Operation YES To Configure MODBUS Carnxmication Parameters MENU MENU - Advance To 'DXP40 Version Information' SWt YES - Contigtre MODBUS Interface SW2 NO _ Do To 'DXP40 Version Information' SW3 EXIT _ Return To Uve Operation View Software Version* and Option Status MEM1 MENU - Return To Uve Operation

ANALOG OUTPUT SETUP? YES NO EXIT

MEW

SETPOINTS ? NO YES

EXIT

MODBUS NTERFACE? EXIT YES NO

BLH DXP40 OPTIONS

VER i0 -1-2-1

Figure 3-1 . DXp-40 Main Menu Showing Calibration' Display Page 3-1

.&A"

RwW

3.2 SETUP PARAMETERS Setup establishes scale operating parameters such as system capacity, decimal point location, display units (pounds, kilograms, tons), total number of load cells, and others. To enter or alter operating . parameters, select YES for 'MODIFY SCALE SETUP?' in Figure 3-2 and proceed to Figure 3-3.

3.2.3 Display Units Designate the desired display unit type by entering LB (pounds), KG (kilograms), or TN (tons). 3.2.4 Decimal Point Location Position the decimal point as desired for weight display and serial printouts . 3.2 .5 Capacity Enter the system total capacity value. A capacity of 10,000 will be 10.000, 100.00, 1000.0, or 10,000 relative to decimal point selection. 3.2 .6 Count By Define the count value of each display increment by selecting 1, 2, 5, or 10 (note that decimals apply). 3.2.7 Zero Band Choose a zero bandwidth (gross weight zero function) of 2%, 20%, or 100% of system capacity . If OFF is selected, the gross weight ZERO function is not available.

3.2.1 Calibration Type DXp-40 transmitters offer two types of system calibration, digital or deadload . In the past, weigh systems could only be deadload calibrated by placing known quantities of dead weight upon the scale to establish voltage to weight equivalent points. In the DXp-40, however, since each load cell has its own A/D converter with embedded mVN calibration, calibration can be accomplished simply by entering known mVN weight values from a load cell calibration sheet. Choose the calibration type to be performed. 3.2.2 Number Of Load Cells Enter the number of system load cells from 1 to 4 .

MEW

DO CALIBRATION? YES NO EXIT swl

C?F" I

YES to Perform System Calibration MENU MEW - Return to Live Operation SW1 YES _ Enter or Alter Calibration Parameters Return to Live Operation SW2 NO _ SW3 EXIT .- Return to Live Operation YES To Enter/After Capacity, Decimal Point, Countby, Zero Band, mV/V or Deadloed Cal, # of Cells. Units MENU MENU - Back Up To Previous Display SWt YES _ Enter System Parameters - Figure 3-3 SW2 NO Step To mv/V or Deadload Cal SW3 EXIT _ Ream To Do Calibration?

MODFY SCALE SET UP?

YES NO EXIT

If mV/V Type Calibration to Selected (optional)

KSM

ENTER YES
am

mV/V

NO

CAL DATA? EXfT 77

SW2

YES To Perform mV/V Calibration MENU MENU _ BACk Up To Previous Display SW1 YES _ Perform rrVN CaBtratkm - Figure 3-5 SW2 NO _ Step To ACWte Deadbad? SW3 EXIT - Return To Do Calibration?

how

ACQUIRE DEADLOAD? EXT YES NO

awl am SW3

YES To Acquire System Dead Weight Value MENU MENU _. Back Up To Previous Display SW1 YES - Acquire Dead Load - Figure 3-6 Return To Do Calibration? SW2 NO _ SW3 EXIT ._ Return To Do Calibration?

If Dealload Type Calibration 4 Selected

Mau

DO DEADLOAD CAL? YES NO EXIT awl sw2 sws

C7

YES to Perform Deacload Type Calibration MENU MENU - Back Up To Previous Display SW1 YES _ Perform Deadload Callbmtlon - Figure 3-7 SW2 NO Return To Do Calibration? SW3 EXIT _ Return To Do Calibration?
" WWI% Fraeeed

Figure 3-2 . DXp-40 Calibration Menu

Page 3-2

-D o

C)L . Cl) ;w 0 (D CD

h L--; 0 co

=r n o

-4-

=r C
Q CD < 0 2. 0 D

Modify Scale Set Up

USE MVN CALBRATION? STEP MODIFY EXIT
MENU

Select Calibration Type, mVN or Deadoad

MET4U SWf SW2 SW3 MENU _ STEP _ MODIFY_ EXIT _

am

am

aura

Back Up To Previous Display Step Forward To Comer Adjust Change Calibration Type Selection Return To Modify Scale Setup?

MEW

CORKER ADJUST - ON STEP MODIFY EXIT sm sm

Enable Or Disable Corner Adjust Feature (MENU MET1U - Back Up To Previous Display
SWI STEP _ SW3 EXIT _

SW2 MODIFY_ Enable Or Disable (OntOff) Comer Adjust

Return To Modify Scale Seth?

Stop Forward To # Of Load Cell

LOAD CELLS - # STEP MODIFY EXIT

Select Total Nurnber of System Load Cells 1-4 MENU MENU _ Balk Up To Previous Display
SWI STEP _ Step Forward To Display Units SW2 MODIFY_ Change Nurnber Of Load Cob SW3 EXIT _ Return To Modify Scale Setup?
AM MLSTBart At Calf I!

MBA)

DISPLAY UNITS - LB STEP MODIFY EXIT em swz aura

Choose Units Display Of LB, Ka TN, PVU

MENU METIU _ Back Up To Previous Display SW1 STEP _ Step Forward To Decimal Point SW2 MODIFY_ Change Display Units SW3 EXIT _ Return Modify Scale Setup?

DECIMAL PT - 000000 STEP MODIFY EXIT

Select Decimal Point Location NEW MEM _ Back Up To Previous Display

SW1 STEP _ Step Forward To Capacity SW2 MODIFY- Add Decimal Point Or Change Location SW3 EXIT . Return To Modify Scale Setup?

CAPACITY - 000000 STEP MODIFY E)QT 0 COUNT BY 1 LB STEP MODIFY EXIT

F7 I
sws
MEW

Enter Or After System Capacity Value

MENU MEW _ SW3 EXIT ..

SW1 STEP .. Step Forward To Count By # SW2 MODIFY_ Enter/Alter System Capacity Value
Return To Modify Scale Setup?

Back Up To Previous Display

Choose Scale Graduations Of 1, .2, .5, 1.0, 20, 50, 10.0

MENU SWI SW2 SW3 MENU _ STEP .. MODIFY_ EXIT _ Back Up To Previous Display Step Forward To Zero Band Select New Count By Value Return To Modify Scale Setup?

ZERO BAND - 2% STEP MODIFY EXIT

MEW

Select Zero Band Of 296, 2096, 10096, OFF

MENU M SW2 SW3 MENU _ Back Up To Previous Display STEP _ Return To Modify Scale Setup? MODIFY_ Select New Zero Band Percentage EXIT _ Return To Modify Scale Setup?

SW2

Figure 3-3. System Parameter Entry Flow Diagram

Page 3-3

3.3 DIGITAL CALIBRATION

3.3.1 Load Cell Calibration Data Individual channels and embedded mVM-calibration curves make it possible to calibrate a DXp-40 by simply entering mVN equivalent force or weight values from a load cell calibration sheet (Figure 3-4). A cal sheet presents the load cell mVN output reading for either 3 or 10 known weight values . The highest weight value recorded should match the rated capacity of the load cell. Note that there is also a 0 or no load mVN output recorded . Each load cell must have its own cal sheet (match serial number on sheet to serial number on cell) in order to perform mVN cali bration . If cal sheets are not available, use deadload type calibration . 3.3.2 Entering mVN Calibration Points Following Figure 3-5 instructions, select a load cell and enter the zero balance (no load) mVN value. After zero balance is established, enter the load point pound and load point mVN value for each test point on the calibration certificate. Repeat this procedure for each load cell before advancing to `Acquire DeadNote that load cells are load?' (next paragraph) . numbered according to their channel connection position (Figure 2-2). 3.3.3 Acquire Deadload After all mVN load points are entered, a scale zero reference must be acquired. Deadload zero determines the weight or signal output at which the scale/system is in no load condition . Addition of any ingredient weight will be referenced from this point to produce accurate live weight readings. Following Figure 3-6 instructions, acquire the deadload value by either entering a known weight value for all scale/system components (manual) or letting the DXp-40 read and store the no load signal (live) . When all cal sheet span points are entered and deadload acquired, mVN calibration is complete .

Calibration Chart
Customer: Capacity Mode Indicator . . 10;000 Ib Compression NA. 314194 M. Houton Response Run 1 , mvN 0.0000 0.2997 0.5997 0.8997 1 .1998 1 .5001 1 .8002 2.1004 2.4007 2.7009 3.0012 1 .5004 0.0000 Response Run 2 mvN 0.0000 0.2999 0.5999 0.8998 1 .1998 1 .4998 1 .8002 2.1004 2.4008 2.7009 3.0012 1 .5003 0.0000 Response Run 3 mvN 0.0000 0.2999 0.5998 0.8998 1 .1998 1 .4999 1 .8002 2 .1004 2.4008 2.7008 3.0012 1.5003 0.0000 Type Bridge A NA. Temperature : Humidity : 71 F 49 . C3P1 P.O : F046999M0715 Serial No. Test Report'No . 40243 C94-6000

Serial No.

Date Of Calibration Calibrated By: Applied Load Ibf 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 5,000 0

Applied Load [lb] 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 5,000 0

Output Average mVN 0.0000 0.2998 0.5998 0.8998 1 .1998 1 .4999 1 .8002 2.1004 2.4008 2.7009 3.0012 1 .5003 0.0000

Ideal Output mvN 0.0000 0.3001 0.6002 0.9004 12005 1 .5006 1 .8007 2.1008 2.4010 2.7011 3.0012 1 .5006 0.0000

Output Error mvN 0.0000 -0.0003 -0.0004 -0.0006 -0.0007 -0 .0007 -0.0005 -0.0004 -0.0002 -0.0002 0.0000 -0.0003 0.0000

Output Error % FS .000% -.010% -.015% -.020% -.023% -.022% -.017% -.015% -.006% -.007% -.009% .000%

Hysteresis Error % FS

.013% .000%

Figure 3-4. Typical Load Cell Calibration Sheet

Page 3-5

6000C .XLS

Digital Calibration
ENTER MVN CAL DATA? YES NO EXIT.
MEW

YES To Perform Digital Calibration

swz

oft

' SWI YES _

MENU MENU _ Back Lip Tb Previous Display Perform MVN CA)bratlon On AN Cells SW2 NO _ Step To Acquire Two Weight? SW3 EXIT _ Return To Do Calitxation?

MEW

ENTER CELL # ATA? DYES NEXT# EXIT SWI am SW3 0 LOAD PONTS = # STEP MODIFY CELL# on

YES To Enter Cal Data For Cell # (1-4) MENU SWI SW2 SW3

MENU - Back Lip To Previous Display YES _ Enter Selected Cal's mVN Data NEXT# - To Increment Cell #? EXIT - Return To Do Calibration?

Enter/Alter Number Of Load Points For Selected Cell MENU SWI SW2 SW3 MENU _ Back Up To Previous Display STEP _ Step Forward To Enter Zero Balance MODIFY- Change Number Of Load Points CELL# - Return To Enter Cell # Data?

ENTER ZERO BALANCE? YES NO CELL# am am

YES To Enter/After Cal Zero Balance Value NEW SW1 SW2 SW3 MENU YES .. NO _ CELL# ...

Back Up To Previous Display Enter Zero Balance From Cal Cal Sheet Step Forward To Enter Load Points? Return To Enter Col # Data?

BALANCE +OA000O MVN STEP MODFY CELL# SWt an

Modify Displayed Value To Match Cal Sheet Value MEMJ MENU _ Back Up To Previous Display SWI STEP _ Step Forward To Load Points SW2 MODIFY_ Enter/After Zero Balance Value (from oal sheet) SW3 CELLO - Return To Enter Cell # Data? YES To Enter Load Point Values From Cell Cal Sheet MENU MENU _ Back Up To Previous Display SWI YES _ Enter Load Points From Cal Sheet SW2 NO Return To Enter Cell # Data? SW3 CELL# w Return To Enter Col # Data? Enter/Alter Load Point Weight Value

ENTER LOAD POINTS? YES NO CELLO sm am M

am

sIM

MENU SWI SW2 SW3

MENU - Back Up To Previous Display NEXT _ Step Forward To Load Point MVIV Entry MODIFY_ Enter Alter Weight Value CELL# _ Return To Enter Cell # Data?

PT 1 MVN = 1.00000 NEXT MODIFY CELL# swi swz 9M

Enter/Alter Load Point rnV/V Value From Cal Sheet MEMJ SW1 SW2 SW3 MENU - Back Up To Previous Display NEXT - Step To Next Load Point MODIFY- Enter Cal Sheet mV/V Value CELL# . Return To Enter Cel # Data?

Figure 3-5. Millivolt Per Volt Calibration Guide Page 3-6

- Switch Pressed

Acquire Deadload* (Establish Zero Weight Reference) ACQUIRE

YES ~ DEADLOAD? NO EXIT
MENU SM SW2 SM

YES To Acquire System Dead Weight Value

MENU _ YES _ NO _ EXIT _

swt

sing

swa

Back Up To Previous Display Acquire Dead Weight Value (Page...) Return To Do Calibration? Return To Do Calibration?

YES

IS MVN CAL DONE? swt

NO

sw2

EXIT

YES To Establish System Dead Weight Value MENU MENU _ Badc Up To Previous Display SM YES _ Perform Uve Or Manual Dload SM NO _ Return To Enter MV/V Cal Data?* SM EXIT _ Return To Acquire Deadoad?

Mw

LIVE OR MANUAL DLOAD? LIVE MANUAL EXIT

swt an sws

Choose Live Or Manual Tare

MENU _ Back Up To Previous Display SW UVE _ Advance To Is The Scale Empty? SM MAIWAL.Enter/After Deadoad Weight Value SW3 EXIT _ Return To Acquire Deadoad?

.___ . .__ .____ .___ .___ .___ ._:

NEM

DLOAD = t 1000 LB STEP MODFY EXIT am an "W33 O

THE SC?

Enter/Alter Known System Dead Weight Value MENU MENU _ Badc Up To Previous Display SM STEP _ Return To Acquire Deadoad? SM MODIFY_ Enter/After Known Deadoad Value SM D0T _ Return To Acquire Desdoad? YES To Proceed With Tare Acquisition MENU MEW - Back Up To Previous Display SM YES _ Aa uire Dead Weight Value SW2 NO .. Return To LMe Or Manual Tare? SW3 E)UT _ Return To Acquire Tare Weight?

.__ .__ .__._____.

MEW

YES

swf

NO

sm 0

EXIT

SOMA

ACQUIRING DLOAD 15 CANCEL

s

Pause While DXp-40 Acquires Dead Weight Value Press Canoes To Stop Tare Weight Acquisitiort Otherwise Acquire Counter (15) WE Decrement To Zero While Value Is Being Determined SM CANCEIr

MEW

DLOAD - + X00 LB STARE REDO EXIT

9"

SW2

sws

View And Store System Dead Weight Value MENU MENU _ Back Up To Is The Scale Empty? SW1 STORE_ Save Value Then Go To Acquire Tare Weight? SM REDO _ Perform Tare Acquisition Again SW3 EXIT _ Return To Acquire Tare Weight? w/o Save

" Digital Type Callbration Must Be Performed Before Attempting Tare

Figure 3-6. Acquire Deadoad (Used with mV/V Cal Only)

Page 3-7

3.4 DEADLOAD TYPE CALIBRATION

Deadload calibration (Figure 3-7) uses known value 'true' weights to establish calibration span points . Often, only one true weight, value is needed since water or other material can be subsfitufed "incrementally for that value. 3.4.1 Perform Corner Test (Sensitivity Adjust) NOTE: Corner adjusting requires that dead weight equaling 15% (minimum) of scale capacity be loaded at each comer. Since applying/shifting this much dead weight is not practical for most tank based weigh systems, comer adjustment is usually performed only on platform scales. NOTE: Corner testing is not required on systems using transducers with matched outputs or systems where the load distribution is not likely to change . With multiple simultaneous A/D conversion technology it is possible to 'balance' or corner adjust the system Comer adjustment ensures accurate transducers . weight readings even when the scale is loaded off center. Choose YES if comer adjustment is desired . Systems that do not experience load distribution changes ically do not require comer adjustment. Comer testing optimizes scale performance by learning and compensating for the actual relationship between each transducer's output based upon varying load distribution . Perform corner testing by placing a known value weight on the scale/system directly above or as close as possible to each transducer as instructed in Figure 3-7 . Position the weight above transducer #1 (channel 1) and acquire . Repeat the process for each subsequent transducer. After each transducer has 'felt' the weight, the DXp-40 will store the reaction pattern . This pattern becomes a referComer ence for balancing live weight readings. where ingredients is ideal for systems/scales testing may shift or loads move.

3.4.2 Acquire Zero Acquire zero is the first step in deadload calibrating a Acquire zero removes the weight weigh system. value of system equipment (tank, platform, mixers, motors, etc .) and establishes a zero reference point. All live weight transactions will be referenced to this point. Remove any unessential equipment from the scale/system and follow instructions presented in Figure 3-7 (second page). 3.4.3 Span Point Entry Once zero is established a span point (or points) must be entered to complete calibration (Figure 3-7 second page). The simplest form of deadload calibration consists of acquiring zero and entering one span point, preferably the full scale capacity value. To accommodate more sophisticated systems, the DXp-40 provides up to 10 span point entries . Weigh systems can be fully linearized, or tuned, by entering known live weight span points between zero and capacity. Enter span points from the lowest to the highest weight value; do not attempt to enter a point value lower than the previous entry. When deadloading to full capacity is impractical, the DXp-40 accurately interpolates all weight values between the last span point and capacity .

Deadload Type Calibration Flow Diagram

DO DEADLOAD CAL? YES EXIT NO
YES to Perform Deadoad Type Calibration MENU MENU - Back Lip To Previous Display SW't YES - Perform Deadload Calbration SW2 NO Return To Do Calbration? . SW3 EXIT _ Return To Do Cefibratlon?
YES To Continue With Deadoad Type Calibration

MENLI If Bnabled-

IS CAL SETUP DONE? YES NO EXIT

sWt sW2

sure

NEW SW1 SW2 SW3

MENU .. YES _ NO EXIT -

Back Up To Previous Display Proceed To Comer Adjust Or Acquire Zero Return To Modify Scale Setup?Return To Do Deadoad Cal?

MN)

DO CORNER ADJUST? YES NO EXIT

am
SW2

am

YES To Corner Adjust; NO To No Load Reference MEW MENU - Back Up To Previous Display SW1 YES - Do Corner Adjustment SW2 NO _ Advance To Aquire Zero? SW3 EXIT _ Return To Do Deadoad Cal?
YES To Acquire A No Load Reference

IS THE SCALE EMPTY?

YES awl NO swz

EXIT sm

MEW SWI SW2 SW3

MENU YES NO EXIT ..

Back Up To Previous Display Acquire A No Load Reference Return To Previous Dlasplay Return To Do Deadoad Cal?

. .............

ACQUIRING DATA 15 CANCAL

SW

Acquiring Reference Data (256 Conversions)

SW3 CANCEL

Press Cancel To Haft Acquisition, Bee Acquire Counter (15) decrements To Zero During Acquisition

APPLY LOAD TO CELL #

DONE awl

------------------ - --------

EXIT am 0

Apply Known Value Load To Each Cell & Save

MEW MENU _ Back Up To Previous Dlaplay SW1 DONE _ Enter Value And Advance To SW3 EXIT - Return To Previous Display
YES To View Completed Cell Balance

Next Cal

VIEW CELL. BALANCE?

YES
htM

am

NO

awe

EXIT

Sws

MEW SW1 SW2 SW3

MENU _ YES _ NO EXIT _

Back Up To Balance The Cells? Display View The Results Of Cell Balancing Advance To Acquire Zero? (page ) Return To Balance The Cob?

MEW

1+25 .00% 2+25.00%

am

4+ 2500P%o 3+ 25.001 /6 SW2 sm

Display Of Cep Balance in % Of Load

MEW SWf SW2

Menu, SW1 - SW3 Ali Revert To Previous Display

NOTE: Point values should he within 20% of each other. Shim load colt to oerreok n necessary.

* Cal Setup Must Be Performed Before Attempting Deadload Calibration " awlf Pressed Figure 3-7. Deadload Calibration Entry Guide
Page 3-9

Deadload Type Calibration Flow Diagram (cont.)

ACQUIRE ZERO? YS NO EXTT , am 9" SW2 0 0.049 LB ZERO ACQUIRE ACCEPT EXIT
YES; Must Acquire MB-W MENU _ SW1 YES _ SW2 NO SW3 EXIT _ Back To Balance The Cells? Acquire Zero Reference (Tare Out Dead Weight) Return To Previous Display Return To Do Deadoad Cal?

A No Load Reference

MEW

Live Display Of Dead Welght (Tare) Value MENU SM SM SM

NENU _ Back Up To Previous Display ACOURE. To Acquire And Display Zero Reference ACCEPT. After Acquire, Advance To Clear AN Spans? EXIT _ Return To Do Deadoad Cal?

CLEAR ALL SPANS? YES NO EXIT

MM

Do You Want To Gear Span Points & Re-enter MENU Suit SW2 SM MENU _ YES _ NO _ EXIT _ Back Up To Acquire Zero? Step To Are You Sure? Prompt Advance To, Enter/Adjust Spans? Return To Do Deadoad Cal?

s"

sm

sm

ARE YOU SURE? YES NO EXIT

sws

YES To Clear All Existing Span Points MM Suit SW2 SM MM YES _ NO _ EXR _

Badc Up To Previous Display Clear AN Existing Span Points Retum To pear All Spans? Return To Do Deadoad Cal?

ENTER/ADJUST

YES

NO

SPANS? EXIT

YES To Enter Or MM SW1 SW2 SW3 MENU YES _ NO EXIT _

Back Up To Clear A1 Spans? Step To Span 1 Adlustment Return To Do Deadoad Cal? Return To Do Deadoad Cal?

Alter Span Points (1 - 10)

....___ ... ._..

a a

SPAN 01 = +0000529 11AODFY NEXT EXIT

awl svn2 sw3

Apply Deadload Weight, View, Acquire Span Point MENU SW1 SW2 SM

MENU - Badc Up To Previous Dlaplay MODIFY- Acquire Span Value, Advance To Shift, Inc, Dec NEXT _ Select Next Span Point EXIT _ Return To Enter Adjust Spans?

SPAN 01 - 40000500 SF1FT 140 DEC

NEW

Adjust Span Point To Deadoad Value, Advance To Enter MEM NEW SM SHIFT _ SW2 NO _ SW3 DEC Advance To Shift, Enter. Exit Display Move Flashing Cursor To Wt(s) To Be Altered Increment Value Of Selected Digit Decrement Value Of Selected Digit

0 u g u
cG

SM

LEW

SPAN 01 = " 0000500 SHIFT ENTER EXIT SM Sw2 Swa 0

Store Corrected Span Point Value, Advance To Next Point MENU SW1 SW2 SW3 MEMJ - Return To Previous Display SHFT - Return To Shift, he, Dec ENTER _Store Displayed Value For Current Span Point EXIT - Go To Span # - Without Storing Value

" SWAM Messed

Figure 3-7 (cont.) Deadload Calibration Entry Guide

Page 3-10

4.1 GENERAL

SECTION IV Operation
performs push to zero (gross mode) or tare (net mode). Use switch 1 to view individual load cell data . When the DXp-40 is connected to a host terminal, computer, or an LCp-40 network control device, gross, net, zero, and tare functions can be performed remotely .

DXp-40 transmitters power up in the gross weight weighing mode . If no system errors are detected, the internal LCD display will show the gross weight value as depicted in Figure 4-1 (the unshaded portion) . Note: For initial system power up units are factory pre-calibrated with default values . Calibration (SECTION III), however, should be performed before attempting system operation. Figure 4-2 presents the display panel switch functions for the operating mode . Switch 2 toggles the operating mode from gross to net or net to gross. Switch 3

4.2 GROSS WEIGHT WEIGHING

In the gross mode, all of the live weight of the system is transmitted. Live weight does not include the dead weight of a vessel or other mechanical equipment that is factored out during calibration.

Main Menu (Accessed from Operation Mode)

MM

"100000 LB GROSS CVN* ZERO ND

am sw2 am 0

LIVE WBC*IT DISPLAY, GROSS MODE KM MEW _ Advance To DW File Setup Mess Error SWI PD _ Display Indvldjal Load Cels SW2 WT _ Switch To Nat Moils SW3 ZERO _ Pwh To Zwo YES to enter/after Dgltal FItef Parameters MM MM - Advance To 'Cal DfagnosWe SWI YES _ Enter Or After Filter Parameters SW2 NO Go To Cal DlsynosUn SW3 EXfT _ Retm To We Operation

MM

DIGITAL FLTER SETLP YES EXIT NO

90 Sm

YES MM am

CELL DIAGNOSTICS NO EXIT

MR

:Load CHECK
MEW SW1 SM WS

Sara

MEW _ YES _ NO EXIT _

SIR, Zero Shit, Df Note, Raw Data Advance To to Cabrafbn' ft fm Dlagrasflc EvaluWlon Go To Do CaffxadM Rohm To LNe operation

MM

DO CALBRATION? YES NO EXIT

am

am

SIM

YES to Perform System Calbration MEW MM - Rehsn To Live OperaWn SM YES _ Erdar Or Aftx Csiebra0on Setttgs SW2 NO _ Return To Live OperaWn SM EXR _ Rob" To Live OperaUon YES To EnterlAlter Analog Output Parameters . NE3AJ MEW - Advaroe To SDVWtsY SWI YES _ Enter/Alter Arsdog Output Parameters SW2 NO - Go To Seypoiits? SW3 EXIT _ Retun To Live operation YES To CoMig" Relay Output Furwboris KM MEW _ Advance To MODBW htarface? SWI YES _ Cord" Set Point Relay outputs SM NO _ Go To OBIS Martece? SM DQr _ Return To Lhe operation YES To Configure MODBUS Commdeation Parameters MEW MEW _ Advance To bXP40 Version hfamatbn' swt YES _ Conflgiae MODSm Inwtaoe SW2 NO Go To UCP40 Version Ydorma0on' SM EXIT _ Retun To Live Opwatlon View Software Verslon# and Option Status M9aJ MENU - Return To Live Operation

ANALOG ouThuT YES NO EXIT

i

0
9w2

mm

SETPOWTS ? YES NO
ant M

EXIT
swa O

11111111

MW

MOMIJS NTERFACE? YES EXIT NO

am svrz awe

IIIIIIIII

MW

BLH DXP40 VER t0 OPTIONS -1-2-1

" If remote G/N (110 option) is enabled, internal G/N function is not available - see paragraph 6.2 .8

Figure 4-1. DXp4O Main Menu - Power Up In Gross Mode

Page 41

DXp-40 Operating Mode Switch Selections

+100000 LB GROSS ND G/N ZFFR(
Live Weight Display, Gross Mode MENU - MENU SW1 III ... SW2 NET _ SW3 ZERO _

Choose Main Menu - Rgtre 4-1 Display I Loci Cob Switch To Net Mode Push To Zero (no display if out of zero band range; MOTION It in motion)

Menu

+100000 LB GROSS ND G/N TARE am svwt 0 0 +100000 LB GROSS IND G/N SRO sw2 Svc D 0 UNITS TO DISPLAY i6LOAD LB MV
swn sw2 Svc

Live Weft Display, Net Mode MENU SWI SW2 SW3

MBU _ Choose Man Menu - Figxe 4-1 IND Display individual Load Cells GROSS ...Switch To Gross Mode TARE . Tare Net Weight (MOTION If In motion)

Look At indvklual Cell Data MENU SWI M9W .. Choose Main Menu - Rgtre 4-1 IND . Display Wdvidijal Load Cells

MEW

C7

Select Load Cell Display UNts NVU SWi SW2 SW3

LIM

MENU - Go Back To Previous Display LB _ Display Weight UNts MV _ Display Mwolt Signal %LOAD .-Display % Of Load Upon Cell

Neau D

1.000 2+ 1000 sun

Sw2

4+1000 3+ 1D0 swa

Individual Call Display In Weight Units MEM Sm SW2 SW3 UNts To Display E)dt Mvolts Show % Of Load

77

MEW

1+ 1&000 2+ 15.000
sm O

sm

4+ 15.000 3+ 15.000

kdvidual 091 Display In MiBvolts MEW Sm SW2 Sm UNts to display Units E)dt Show % Of Ld o

MAP

2+ 2&000A
Sm

1+ 2&000%

3+ 25A00/6 m svo

4+ 25.000%

indviduai Cell Display In % Of Load MENU SWf SW2 SW3 _ _ Units To Display units Nuivolts E)dt

- switch Prees.d Figure 42 . Switch Functions In The Operating Mode Page 42

4.3 ZERO OPERATION

A new zero can be acquired to compensate for changes in the dead load of the system due to heel build-up etc. Acquiring a new zero reference value does not affect the slope of the calibration . The"zero function in the DXp-40 can be configured for OFF, 2%, 20%, or 100% of system capacity (see Setup Parameters in SECTION VI Calibration). Zero may be acquired only if the system is not in motion and the zero band limit has not been exceeded (when ZERO is visible on the display).

4.6 VIEW INDIVIDUAL CELL DATA

Pressing switch 1 'IND' (Figure 4-2) allows the operator to view individual load cell parameters in weight units, millivolts, or percent of total load. Note that live weight processing (including serial data transactions) continues during individual cell displays.

4.7 ERROR DETECTION AND CORRECTION

Should an error condition occur during system operation, a flashing capital 'E' will appear next to the weighttstatus information on the display (Figure 4-3). If the system is overloaded, (total or individual cell capacity exceeded) the word 'OVER' also will appear flashing beneath the flashing 'E' . Errors other than overload fall into 4 categories; load shift, zero shift, cell drift, and cell noise errors . To evaluate and correct system errors, enter the diagnostic mode as shown in Figure 4-3 and proceed to SECTION V (Cell Diagnostics).

4.4 NET WEIGHT WEIGHING

Net weight weighing is used when the operator wants to reset zero to compensate for the addition of live weight, or a container, before adding a specific amount of material . Tare is used to establish a zero reference in net mod e.

4 .5 TARE OPERATION
With the DXp-40 in net weighing mode, the tare operation resets the output to zero. Taring allows the operator to achieve a new zero reference before addition of each ingredient so that errors do not become cumulative .

Error Condition Encountered "moooo

IM
Km

swi D

cn~

La

doss ~
ZERO

sw2 D

sure

ERROR DESIGNATED BY FLASHING 'E' MENU MENU - Press MENU Until Display Reads View Errors?

YES

VIEW ERRORS?
NO
SW2

ovr
I
SWd

YES To View The First Error MENU MENU _ Return To Previous Display
SW1 SW2

LEM

SW1

SW3 EXIT .

NO _

YES _

View First Error Ocarance Return To Previous Display Return to Lire Operation

error CELL # DIAL EXIT STER

MENU

Error Type Defined For Failing Cel(s)

SW2 DIAL _ SW3 EXIT ~.

MENU MENU _ Return To Previous Display

sm

Svc O

SW1 STEM _. Step To The Next Cell Error

Go To Diagnostics, Evaluate Error Return To Previous Display

error

= Overload Cell Load Shift Cell Zero Shift Cell = Cel Drift Cell # Cell Noise Cog #

Figure 4-3. Error Detection & Correction Switch Selections

Page 4-3

SECTION V Dynamic Digital Filters

5.1 GENERAL Digital filtering (including motion) constitutes the first set of parameter entries in the main menu (Figure 5-1, unshaded). Digital filtering combines moving averaging (filter) with response and noise bands to eliminate vibration and agitation noise from dynamic process weighing systems. Filtering removes unwanted, mechanically induced fluctuations from the weight signal while maintaining rapid response to genuine live weight changes. 5.2 FILTER PARAMETERS Each filter component has adjustable parameters (Figure 5-2) so that every weigh system can be `tuned' to its own unique environment. NOTE: Using diagnostic software, it is recommended that the statistically calculated noise characteristic parameters such as standard deviation, etc., be used as a basis for initial filter set-up .

Main Menu (Accessed from Operation Mode)

"100000 LB GROSS G/td IND ZERO
swi sm sm LIVE WEIGHT MENU MENU .. SWI IND _ SW2 NET _ SW3 ZERO ._ DISPLAY, GROSS MODE Advance To Digital Filter Setup Union Error Deploy Individual Load Cob Switch To Net Mode Push To Zero

NEW

M9dJ

MTAL R.TER SETUP YES NO EXIT

sm am

YES to enter/after Dgftal Flterlng Parameters MENU MENU - Advance To 'Cell DlagasW SWI YES _ Enter Or Alter Flier Parameters SW2 NO _ Go To Col Magws6ca SW3 EXIT - Return To Uve Operation
CHECK: Load Shift, Zero Shift, Drift, Noise, Raw Data

Msau

YES

CELL DIAGNOSTICS
NO

EXIT

MENU SWI SW2 SW3

MENU . . YES _ NO _ EXIT ..

Advance To 'Do Calibration! Perform Dlagiostic Evaluation Go To Do Calration Return To Live Operation

MEW

DO CALBRATION? YES NO EXIT

swi swz am

YES to Perform System Calibration MENU MENU - Return To Live Operation SWf YES .. Enter Or After Calabratlon Setups SW2 NO _ Return To Live Operation SW3 EXIT _ Return To Live Operation YES To Enter/Alter Analog Output Parameters MENU MENU .. Advance To 'Selpoints7 SWI YES _ Enter/Alter Analog Output Parameters SW2 NO _ Go To Seypoints? SW3 EXIT _ Return To Live Operation YES To Confgre Relay Output Functions MENU K*341U _ Advance To MODBUS Interface? SWf YES - Configure Set Point Relay Outputs SW2 NO _ Go To MODBUS Interface? SW3 EXIT - Return To Live Operatlon YES To Configure MODBUS C,omrriiaiioation Parameters MENU MENU - Advance To 'DXP40 Version Mormalion' SWt YES _ Conttgure MODBUS Interface SW2 NO Go To 'DXP40 Version Information' SW3 EXIT _ Return To Live Operation View Software Version# and Option Status MENU MENU _ Return To Live Operation

MM

ANALOG OUTPUT SETUP? YES NO BUT

sm

902

am

MM

SETPONTS ? YES NO
SIAM SW2

EXIT
Sm

MENU lli

MODBUS NTERFACE? YES NO EXIT

M9W ll l

BLH DXP40 OPTIONS

VER 10 -1-2-1

" swm+ vn,..d

Figure 5-1 . Main Menu Digital Filter Selection Page 5-1

Digital Filtering Setup

FLIER s STEP MODIFY EXIT
View LIENU SM S%V2 SM Or Modify Rters LEV _ Return To Digital Filter Setup STEP - Step To Next Filter MODFY Mof Selected Filter Parameters ENT _ Rturn To Digital Filter Setup
Length Selection (rnaec)

MEW

FRTER - 50 MSEC STEP MODIFY EXIT swt sWS S*Z 0

View/Modify Filter MENU SM SW2 SM

Choose: 50,10Q 200, 400, 800,16004 3200, $400

MENU _ Back Up To Provbw Display STEP - Advance To Band Filter Sebctbn MODFY Modify Filter Time Length EXIT _ Return To Filter + Selection

View/Modify Band Averaging Selection

Optional
MEW

BAND FLT - 4 SECS STEP MODIFY EXIT W so sm

Choose OA 1, 2, 4, 8, 16, 32, Or 64 Seconds

MR&1 SM SW2 SW3

MEW _ Back Up Tb Pmbue Display STEP _ Advance To Noise Band Setup MODIFY game Bend Averepitq Selection BUT _ Ream To Filter # Selection? Noise
Band Selection (Counts)

NOISE BAND - 2 STEP MODIFY EXIT

SAM

View/Modify

Choose: 0 - 250 Display Counts

SM STEP _ Advance To Response Setup SW2 MODIFY Select New Noise Bend Count Range SM EXIT - Return To Rter # Selection

NENU _ Back Up Tb Prevbw Display

Optional

RESPONSE - 4 STEP MODIFY EXIT

View/Modify Response Band Selection (counts) Choose: 0 - 250 Display Counts

MENU SM SW2 SM

MENU _ Back Up Tb Previous Display STEP _ Advance To Motion Band Setup MODFY Modify Response Thte Length EXIT - Pdm To Filter # Selection
Notion Detection Band Selection

Mau

MOTION BAIL - 3 STEP MODIFY EXIT

View/Modify MENU SIM SM SW3

Choose: OFF, 1. 2, 3,

MENU _ Back Up To fvbw Display STEP _ Advance To Nobe Band Setup MODFY Mof Filter Time Length OUT _ Ream To Filter # Selection

a 10, 20, Or 50 DL3*y Counts

MEW

MOTION TMER -1 SEC STEP MODIFY EXIT SwI am ms

View/Modify Motion Tine Selection (sec) Choose: Time %VkWove Of .5, 1, 2, 3 Seconds MM MEW .. Back Up To Previous Display SWt STEP _ Return To Digital Filter Setup? 5m MODFY_ Moddy Motion Detection Time Period SW3 EXIT - Return To Filter # Selection " ewft Room
Page 5-2

Figure 5-2 . Digital Filter and Motion Setup

5.3 DYNAMIC FILTER

Dynamic Digital Filter software is an advanced series of filtering algorithms for attenuating random weigh signal noise . Using the pre-filtered . signal.,. from the standard filter, the Dynamic Filter applies a two step approach (Noise Band and Response Band) to adaptively reduce the noise components of the weigh signal without adversely affecting system dynamics (Figure 5-3).The resulting real time weigh signal provides stable weight information for high resolution indication and precise control over a broad spectrum of mechanical and electrical disturbances . 5.3.1 Band Filter Band Filter is an exponential software filter which is applied only to signal fluctuations which fall within the Noise and Response band limits . The Band Filter is fully applied to signal fluctuations which fall within the Noise Band. For signal changes which fall outside the Noise Band but within the Response Band, proprietary statistical analysis algorithms are applied to the Band Filter resulting in progressively lower dampening proportional to time within the Response Band and direction of signal change. For signal changes which fall outside both Noise and Response bands, the Band Filter is canceled . This allows heavy dampening of system noise while maintaining quick response to changes in weight signals . The Band Filter length' is selectable at 0.5, 1, 2, 4, 8, 16, 32, and 64 seconds . The equivalent frequency attenuation is as follows :
Filter length in seconds 0.5 1 2 4 8 16 32 64 Frequency attenuation in hertz 10 5 2.5 1 .25 0 .63 0 .31 0 .16 0 .08

For 99% attenuation (3 sigma filter), multiply the largest standard deviation value by 3 and round it up to an enterable value for the Noise Band. Noise Band amplitude selections are from 0 (off) to 250 display counts (display resolution) . 5.3.3 Response Band Response band is t;ie + and - limit in terms of the amplitude of changes in weight signal outside the Noise Band limit . Response allows quick response to small changes in weigh signals outside the Noise Band but within the Response Band . For changes in signal amplitude equal to or less than the Response Band limit, the Band Filter is applied with progressively lower dampening effect to allow responsive changes in weigh signal . Response Band amplitude selections are from 0 (off) to 250 display counts (display resolution) . It is recommended that the Noise Band setting be multiplied by 1, 2, 3, or 4 to get the Response Band setting . With the vessel in a steady state, set the Noise Band according to the standard deviation value. With the Response Band set to zero any spikes that fall outside the Noise Band will cause the displayed or transmitted weight to jitter. Increase the Response Band setting until the jitter disappears . The two bands work together to separate system noise from true change in weigh signal achieving higher accuracy and more dependable data for control purposes . 5.3.4 Default Parameters All DXp-40 transmitters (even those without the dynamic filter) are shipped with these default parameters: band filter = 32 seconds, noise band = 1, and response band = 4.

*Filter length is the time for an instant change to be fully reflected at the output. 5.3.2 Noise Band Noise band is the + and - limit of the amplitude fluctuations in weigh signal due to external electrical or mechanical influences . For changes in signal amplitude equal to or less than the Noise Band limit, the Band Filter is fully applied for maximum dampening . In many applications, the standard deviation, determined by the Noise Test (paragraph 6.2.4), can be used to establish the value of the Noise Bar.d. Under the Noise Test menu, view the standard deviation without any filtering applied . For 68% attenuation (1 sigma filter), select the largest value and round it up to an enterable value for the Noise Band.

Raporm

Bend (coiats)

IL-,
(

Band

Respomm Band (cards)

Figure 5-3 . Graphical Opera ion Example

Page 5-3

5.4 MOTION DETECTION (Standard)

Motion detection parameters are -entered along -with filtering parameters (Figure 5-2). Motion simply determines when the system is active and when it is not. Tare and push to zero functions should not (and cannot if motion is selected) be implemented when the system is in motion . Motion can be configured for bandwidth of 1, 2, 3, 5, 10, 20, or 50 counts, or turned OFF. Once a band is selected, a time length (window) also must be established for the band . Motion must occur for the designated time interval before the system acknowledges an 'in motion' condition. The motion timer is the time the system remains in an "in motion" condition after returning to a "not in motion" condition.

5.5 OPTIONAL SECOND FILTER

If the remote input option (paragraph 2 .3 .6) is installed, two sets of filtering parameters may be entered . Dual filters provide optimal control for systems with changing process dynamics . With the display reading 'DIGITAL FILTER SETUP?', press YES for filter 1, and press YES again for filter 2. Enter parameters for both filters as previously described. Filter selection is accomplished using remote digital input number 4. When input number 4 (DIG 4) is low (grounded), filter 2 is selected; high selects filter 1 .

SECTION VI On-Line Load Cell Diagnostics

6.1 GENERAL
The next step in the DXp-40 main menu is diagnostic error analysis and parameter entry (Figure 6-1) . The unique quad A/D converter design makes it possible to diagnose system errors down to the exact load cell. Each load cell is continually checked for open circuit/wiring, zero shifts, drift, and overload . DXp-40 diagnostics also detect system malfunctions such as structure shifts, impact shock loads, and ingredient build up problems (heel checks). "100000 LB DROSS W O/Id ZUi0 Iam Figure 6-2 provides an overall flow diagram for all diagnostic functions. Once an error is detected, the display shows a flashing 'E' while the serial output transmits the error code to the host computer. Also, a discrete relay output (optional) can be configured for error detection activation . Flow diagrams (Figure 6-3) show how to pinpoint the faulty cell(s) and change error condition parameters, if desired.

Main Menu (Accessed from Operation Mode)

LIVE VVEKW MENU MENU _ SWI w _ sM NET _ NO ZERO _ DISPLAY, GROSS MODE Advance Tb Digital Filter Setup Unless Error Display t+dvidual toad coils switch Tb Not Mode Push To Zero

C1
NO

DWAL FLTER SETUP

UM YES

I~

sm

am

EXIT

am

YES to enter/alter Digital Filtering Parameters MM MENU _ Advance To 'Cell Dla~ SWt YES _ Enter Or Alter Filter Parameters am NO _ Go To Call Maw"Hos SW3 EXIT _ Rebsn To live Operation CHECK. Load Shift, Zero Shift, Drift Nolse, Raw Data MENU MENU _ Advance To 'Do Cabratlon' SWI YES _ Perform Diagnostic Evaluation Sw2 NO _ Go To Do CalliraUon SW3 EXIT _ Reti n To Live Operation

AGM

CELL. UAC0lOSTlcs EXIT YES NO am am am

MEW

DO CALBRATM YES NO EMU am we Wo (ANALOG OUTPUT YES NO EXIT

YES to Perform System Calibration illMJ MENU _ Rebsn To Uw Operation SWt YES _ Enter Or Altar celebration Settings Return To Uve Operation SW2 NO _ SWS EXIT _ Rob" To Uve Operation YES To Enter/Alter Analog Output Parameters MENU MENU _ Advance To %**~ SWI YES _ Enter/Alter Analog Output Parameters SW2 NO _ Go To Seypoints? SW3 EXIT _ Rat" To Llve Operation YES To Configure Relay Output Functions Lie NIJ MENU _ Advance To NIODBUS Interface? SWt YES _ Configure Set Point Relay Outputs Sw2 NO _ Go To MODBll3 (interface? SW3 EXIT _ Return To LIw Operation YES To Configure MODBUS Co wnunication Parameters W M MIM _ Advance To'DXP10 Version information' SWt YES : Cosflgtro MOOBUS interface Go To 'DXP40 Version hfonnation' SW2 NO _ SW3 ExlT _ Retun Tb Uve Operation View Software Version# and Option Status MENU MM _ PAt rn To Uve Operation

Mau

SETPOWTS ? YES NO sm am 0 0

EXIT am 0

Meal

MODBUS NTERFACE? EXIT YES NO

BLlI DXP40 VER 10 OPTIONS -1-2-1

Figure 6-1 . Diagnostic Error Evaluation Main Menu

Page 6-1

10

13 C

11C ,, &
J

c
c

0 cm
0

I 1C
X

d 0

JC

C
lo i gC
10

24

10

n ING

132 C

C 4

g 10

g C

g 10

24

24

bc
24

110

gC

24

29

24

2C

i1c k2c
10 10

P9 P 3

9C 04

Figure 6-2. DXp-40 Diagnostic Routines Page 6-2

6.2 DIAGNOSTIC TESTS

Four of the five tests, load shift, zero shift, drift (when activated), and noise test, are evaluated and updated every 256 conversions (12 seconds). Overload is checked and updated every conversion (50 mse6).

Flow diagrams (Figure 6-3) provided for each test show how to distinguish the cell/system fault and change parameters if desired.

Load Cell Diagnostics Main Menu

CELL DIAGNOSTICS NO EXIT YES
CHECK: Load Shift, Zero Shift, Drift, Noise, Overload MEW MENU - Advance To 'Do Calibration' SW1 YES _ Perform Diagnostic Evaluation SW2 NO Go To Do calibration SW3 EXIT _ Return To Live Operation YES To Evaluate Load Shift Error NEW MENU _ Return To Previous Display SW1 YES Rgure 6-4 - Evaluate Shift Error(s) SW2 NO _ Step To Zero Shift & Display SW3 EXIT _ Return To Cog Disgnostics

LOAD SFFT & DISPLAY EXIT YES NO

ZERO

SHIFT
NO

YES

& DISPLAY
EXIT

YES To Evaluate Zero Shift Error MENU MM _ Return To Previous Display SW1 YES _ Figure 6-5 - Evaluate Zero Shift Errors) SW2 NO _ Step To Drift Test & Display SW3 EXIT _ Return To Cell Diagnostics YES To Evaluate Drift Error MENU MEW _ Return To Previous Display SWt YES _ Fire 6-6 - Evaluate Drift Error(s) Srep To Noise Test & Display SW2 NO - . SW3 EXIT _ Retum To Gel Diagnostics YES To Evaluate Noise Error MM MENU _ Return To Previous Display SWt YES _ Figure 6-7 - Evaluate Noise Errors) SW2 NO _ Step To Cel Overload Limits SW3 EXn' _ Return To Cel Diagnostics YES To Check Load Calls) Overload Condition MEW NEW _ Return To Previous Display SWt YES _ Figure 6-6 - Evaluate Overload Error(s) SW2 NO _ Step To Recall Values SW3 EXIT _ Return To Cal Diagnostics YES To View Zero, Tare, Deadload, Or Cell Balance NEW MENU - Return To Previous Display SW1 YES _ Figure 6-9 - Zero, Tare . Deadoad, Balance SW2 NO _ Go To Degrade Setup? SW3 EXrr .. Return To cell Diagnostics YES To Acquire Reference or Modify Cell Enable NEW MENU - Return To Previous Display SW1 YES _ IFIgure 6-10 - Perform Degrade Setup SW2 NO _ Go To Cell Diagnostics SW3 EXIT _ Return To Cell Diagnostics YES To Change Remote Input Enable Status MENU NEW _ Return To Previous Display SWt YES _ Fgure 6-11 - Enable/Disable Remote Inputs SW2 NO _ Go To Cell Diagnostics SW3 EXIT _ Return To Gel Diagnostics
= - SWt Pressed

MM

DPJ7 TEST & DISPLAY YES NO EXIT

sm

a"

NOISE TEST & DISPLAY NO EXIT YES

MEW

!~

awl

SW2

sw3

Y6AJ

CELL OVERLOAD LAbATS YES NO EXIT

swi

We

SW3

MM

RECALL VALUES? EXIT YES NO

Son

sw2

sws

MEW

DEGRADE SETUP? NO EXIT YES

swu

sv&

SW3

MEW

SELECT WPUT ENABLES YES NO EXIT

Figure 6-3. Diagnostic Error Evaluation Main Menu Page 6-3

6.2.1 Load Shift A load shift error indicates that system equipment or vessel contents have shifted so as to place a disproportional amount of weight on a single cell . This test does not apply to initial load alterations during installation and calibration . Load shift - , testing detests significant load changes in an operational weigh system . Follow guidelines in Figure 6-4 to determine which cell(s) is experiencing the shift error .
1.

Load shifts can be caused by many things, among a few are : heel build up on one side of a tank, support structure changes introducing more force from connected pipes or process equipment, excessive deflection of a support leg, or faulty signal from the load cell. Check the system structure above that cell for evidence of weight shift. If physical evidence does not point to a structural or content error, see if the cell has failed any of the other diagnostic tests .

Evaluate Load Shift Error

VEW LOAD SWT
WM SIM

NO an

EM am

YES To View Load SHft (% Deviation From Reference) LEM NB~I _ Return To Prevbus Dbplay SWi YES _ View tWMdud Cel % Load SM Sw2 NO _ Step Td Vbw % Load Rererenos SM EXIT _ Ream To Load SM & DWlay trdlvldual Cel % Load ShMt All Sw Reium To Pmvbus Dbplay

'h 00.50% 2- 0020%

swn

awe

4" 00 .509'0 3 " 00 .30%

avs

VIEW %LOAD REFEFOCE EXIT YES NO MM SM an (~ O O .............. ............................ . mvv CdilxwAon ........... 96LOAD
DEADLOAD - 200 .0

YES To View % Load Reference MENU MeU - Rot= To Prevbua DMPW SW7 YES _ vbw Ca6ftbd Spn Points or WN Zero 3W2 NO slap To Load SHft Ltdt SW3 EXIT _ RWm To Load SWt & Diepby View Cel Deadbad Reference As % Of Load Met! Menu - Pen To Prsvbos Dkplay SW1 %LOAD- Vbw % of Load Far Each Cal SW3 EXIT _ Rehm To View % Load Reference

EXIT sws

........................ Deadload CaL'bratim SPAN 01- 200.0 %LOAD NEXT DQT

View Cabrated Span Points As % Of Load MEW MBVU _ Retun To Vbw % Load Reference SWt %"J)- vrw % of Load For Each cal SW2 MM _ traenrent To Next Spen Pdnt SO EXIT - Rohm To Vbw % Load Reference

.. ......

1- 25.00% 2" 25A0k 0

SIM

4- 25.00% 3+ 25.0096
an

SM

trdvktual Cel Display In % Load SM ALL SwRehss Reiun To Prevlam Dbpby

............
MEW

VIEW S1Fr LMT YES NO EXIT &M an SM O SIFT LMT - 0 .1% STP MOD" EXIT a" 910 SM 0 l~ o

YEs To view, Enter. or Alter The shm unit MENU Mt3S1- Rohm To View % Load RefWOM SWt YES _ Step To Shift LMt SW2 NO _ Go To Load SM & DbOay W3 EXIT _ Retun To Load Mft & Dkpiey Modify To After Shat LM* Percentage MENU MW - Rehun To View SHft LMt SM STW .. Rehin To Vbw MM UM s" MODFY_ Modify Cured Wtift Lull SW3 EM _ ROtun To Vbw SNKt LMt

MW

Figure 6-4. Load Shift Error Evaluation Instructions

Page 6-4

6.2.2 Zero Shift Zero shift testing identifies a load cell(s) that has shifted from its original calibration zero reference point. The diagnostic zero shift limit entry is DIFFERENT from the 2%, 20%, 100%, or OFF calibration ZERO band entry. Zero shift- testing is applied l to each load cell, whereas the zero band concerns only the total system weight . Follow the flow diagram in Figure 6-5 to view the zero shift value for each cell and/or alter the zero shift limit.

Zero shift test failures typically result in load cells that have been damaged by overloading or electrical leakage. Either of these factors can cause a permanent shift in a cell's zero reference. If a cell fails the zero shift test, check to see if the overload peak has exceeded acceptable tolerance levels. Note that the zero shift test is performed only when the 'zero' function is activated .

Evaluate Zero Shift Error

VIEW ZHRO SFFT EXIT YES NO
MEW

YES To Vlew MENU SW1 SW2 SW3 MENU YES M NO _ EXIT _

Zero

Shift (Deviation From Reference)

SWf

am

SW3

Return To Previous Display View hdvidual Cell Zero Shifts Step To Zero Shift Whit Return To Zero Shift & Display

000 2+0.00 0 0
swr

0
YES To View Zero Shift Umit MENU SW1 SW2 SW3 MENU ._ YES _ NO _ EXIT ~. Return To View Zero Shift Vlew Current Zero Shift Selection Step To Zero Shift & Display Return To Zero Shift & Display

sw2

4+0.00 3+0.00

Individual Cell Display In Engineering Units ALL Switches Return To Previous Display

_.____..___.
MM

ZERO SHFT LUT EXIT YES NO

SWt SW2 SW9

LMT
MEW Sm

MooF r
SUV2

3.00 La

oQr
SW3

Modify To Alter Zero Shift Umit NEW MENU _ Return To Zero Shift Limit SW1 STEP - Return To Zero Shift Limit SW2 MODIFY_ Modify Current Shift UrNt SW3 EXIT _ Retum To Zero Shift L'urnit s1
Premod

Figure 6-5. Zero Shift Error Evaluation Instructions

Page 6-5

6.2.3 Drift Test The drift test detects a load cell output that is changing beyond acceptable tolerance levels . When the system stabilizes, after a period of weight activity, the processor waits one minute and then stores a reference value for each cell. : , - Successive -values, averaged every 256 conversions, are compared to the stored value and checked for compliance with the drift band selection . Drift testing is abandoned when the system is active . Use Figure 6-6 to evaluate drift errors and/or change the drift band.

Long term load cell drift problems may be caused by electrical leakage or system structural problems . Since most systems usually experience inactive periods of 8 or more hours, this test is highly effective at catching long term drift problems . Long term drift testing provides 'early warning detection' for cells that may fail completely at a later date.

Evaluate Drift Error

YES

vEw CELL
NO

DRFT

D(17'

YES To View Cell Drift (% Deviation From Reference) MEMJ MENU _ Return To Previous Display SW1 YES . View Individual Cell Drift Values SW2 NO M Step To View Drift Band SW3 EXIT _ Return To Drift Test & Display Select Polarity Of Drift To View MENU SW1 SW2 SW3 MENU _ POS . NEG _ EXIT _ Return To Previous Display Mew Positive Cell Drift View Negative Gel Drift Return To Drift Test & Display

f SECT DRPT TO
POS Ira
sw2

VEW EXIT
sws

1+0.00% 2+0.00%

4+ 0.009'0 3+ 0.00% sw2 sws

Individual Cell Drift Display (Polarity As Selected) ALL Switches Return To Previous Display

YES
MEW

VEW DRIFT BAND

View Current Drift Band Selection MENU SW1 SW2 SW3 MENU _ YES ... NO ... EXIT _ Retum View Cal Drift View Current Drift Band Value Return To Drift Test & Display Return To Drift Test & Display

NO

EXIT sw3

snn

sw2

STEP
Mw

oaFr earn
swt

" 025 LB MODIFY EXrT

Sw2 Sw3

Modify To Enter New Drift Band Value MENU MENU _ Retum To View Drift Bard $W1 STEP _ Return To View Drift Band SW2 MODIFY_ Modify Current Drift Band Selection SW3 EXIT _ Return To View Drift Band
" Switch Pressed

Figure 6-6. Drift Error Evaluation Instructions

Page 6-6

6.2.4 Noise Test Noise testing identifies a load cell(s) that is experiencing unusual amounts of static state signal 'jitter' . The standard deviation for each cell output is computed every 256 A/D conversions (12 seconds) . The standard deviation values of all cells are-then compared to one another . If the value of any one cell exceeds the values of all other cells by an amount greater than the imbalance band, an error is issued against that cell. Use Figure 6-7 to view the standard deviation for each cell and/or change the imbalance band value.

Excessive noise may be introduce into a load cell through structural vibration or installation location (fork lift traffic, etc .). Another factor could be a loose or corroded load cell connection. If a load cell checks out 'good' for all other diagnostic tests but fails the noise test, carefully check the mounting location and electrical connections . NOTE : Noise testing also provides a good way to set the DXp-40 filter. Try the following : 1). Turn the filter off (select 50 msec filter, Figure 5-2). 2). View the standard deviation for each load cell (during non-error condition) . 3). Enter the highest value standard deviation as the noise band value.

Evaluate Noise Error

YES
NUJ SWf

VIEW STD DEVIATION NO sm EXIT sw3

YES To View Standard Deviation MENU SW1 SW2 SW3 MENU . YES _ NO _ EXIT ... Return To Previous Display View Individual Load C41 Noise Step To View Imbalance Band Return To Noise Test & Display

1+000 2-1-0.00
NEN1

S"

am

4+0.00 3+ 0.00
SW3

Individual Cell Values In Display Units ALL Switches Return To Previous Display

VIEW IMBALANCE BAND

MEW

YES To View Imbalance Band MENU SW1 SW2 SW3 MEM1 ._ YES _ NO _ EXIT ... Return To View STD Deviation View Current Imbalance Band Selection Return To Noise Test & Display Return To Noise Test & Display

swt

Wry

am

IMBALANCE BAND " OS LB STEP MODIFY EXff am

-

Modify To Alter Imbalance Band Selection MENU SW1 SW2 SW3 MENU .. Return STEP ... Return MODIFY.. Modify EXIT _. Return To View Imbalance Band To View Imbalance Band Imbalance Band Percentage To View Imbalance Band

Switch Pressed

Figure 6-7. Noise Error Evaluation Instructions

Page 6-7

6.2.5 Overload Since overload is critical to system safety and load cell integrity, it is checked every 50 msec. Cell overload limits are typically set at the cell's rated capacity. A running peak value for each cell is recorded and may be checked (or cleared) at any-timer--in older weigh systems, overload typically signaled a total system overload (system capacity exceeded) .

The DXp-40, however, can alert an operator to a single cell overload, even though total weight does not exceed system capacity. Single cell overloads can be caused by heel buildup, shock loads (mixerstblenders, ingredient free fall force, etc.) and poor system design. Figure 6-8 provides a flow diagram for cell overload evaluation.

Load Cell Overload Limit Selection

CELL OVERLOAD UMMS EXIT YES NO am NO SWI
YES To Check Load MENU SW1 SW2 SW3 MENU . YES _ NO _ EXIT .. Return To Previous Display Figure 6-7 - Evaluate Overload Error(s) Step To Recall Values Return To Cell Dlagnostk;s

Cel(s)

Overload Condition

MENU

CELL #1 - 100000 LB MODFY EXIT STEP sws SWI am

Evaluate Current Values, Change If Necessary MEMJ SW1 SW2 SW3 MENU _. STEP _ MODFY EXIT _ Return To Previous Display Step To Next Load Cell Enter Or Alter Displayed Value Return To Cell Overload Limits

Yepat For Bwh Lad Cdl

Enter Or Alter Displayed Data Value NEW SWI SW2 SW3 MENU .. SHF T NC _ DEC _ Advance To Enter - Exit Menu Move Cursor To Next Dlglt Increment Displayed Value Decrement Displayed Value

0 CELL #1 = 100000 LB

ENTER To Save Data, Exit For Next Cell MENU SWI SW2 SW3 MENU ~. SHF T _ ENTER . EXIT ... Return To Previous Display Return To Previous Display Enter Displayed Value Return To Cal Number Display

sir

eJraR

oar

- SWAM Pnwd
Figure 6-8. Overload Error Evaluation Instructions

6.2.6 Recall Values Recall values allows an operator to view the current TARE, ZERO, Balance, and Deadload values . Figure 6-9 shows how to recall any or all values .

Recall Values (Zero, Tare, Balance or Deadload)

Recall Zero? EXIT YES NO am am awl
YES to Vlew Current Manual ZERO Value MENU MINU .. Bade Up To Previous Dlaplsy SWI YES _ View Total or Ind Cell ZEIRO Values) SW2 NO - Stop lb Recall Tare? SW3 EXIT _ Return To Recd Values? YES To View Current Tare Value MBU MBW _ Back Up To Previous Display SWI YES _ View Total or hd. Cell Tare Vau(s) SW2 NO Step To Reed Cal Balance or Deadoed SW3 EXIT .. Return To Reed values YES To View Or Reset Peak Value Registers MENU MENU _ Back Up To Previous Dsplay SWI YES _ View or Reset Peak/Hold Registers SW2 NO _ Advance To Recall Cell Balance? SW3 EXIT _ Return To Reed Values? YES To Review % Call SensItIft hem MENU . Back Up To Previous Dispay SWI YES _ View Individual Cal Balance values SW2 NO Step To Rood Values? SW3 EXIT .. Return To Recd Values? View Cell % Sensitivity All Swlt&es - Previous Display

mew

Recall Tare? YES NO EXIT

LEW

SWIWI

am

am

YES awl

RECALL PEAK LOAD?

NO an

EXIT aura 0

If DaasOW Cafatien Parforand

Lem

Recall Cell Balance? YES NO EXIT

awl

0 4+ 2500% 3+ 2500%
O
aura

1+ 2500% 2+ 25:00%
O
if a"

SAM

awe

llx uon Pwrfonsaa

MEW

Recall Deadload? YES NO EXIT awt swi 0 0 + 35100 LB

YES To View System Deadload Value MW MENU _ Back Up To Previous Display SWI YES _ View "sin Deadload SW2 NO - Step To Recall Values? SW3 EXIT _ Go To Rood Values? YES To View kldvidual Cell Deadoad Values how MW . Back Up To Previous Display SWI FD - Select Ind. Cal Display Units
Sw2

IND
MINU

Swi

awl

EXfT

an

SW3 EXIT- Return To Previous Display Select MEdJ SWt SW2 SW3 Individual Cell DIWay Ufdts MENU .. Back Up To Previous Display LB Display UnIts As Pounds %LOAD -Dbpiey Ults As % Load EXIT - Return To Previous Display

UMTS TO DISPLAY EXIT LB %LOAD

WNU SIAM

swz 0

s"

- 3lwllehRsswd

Figure 6-9 . Recall Values Flow Diagram

6.2.7 Degrade Mode Function If a diagnostic test identifies one or more load cells in the system as providing faulty data, it is possible using degrade mode operation to eliminate the erroneous data from the cell(s) contributing todha system weight measurement. Since the DXp-40 measures each channel independently and digitally sums the weight information, degraded mode operation shuts of the actual measurement from the suspect channel(s) and uses a calculated digital substitute value, corrected for system balance and channel sensitivity. The resulting system performance will be reduced somewhat, but will still be compensated for load imbalance. This mode of operation makes it possible to continue weigh system operation with minimal interruption . To activate degraded mode operation it is necessary to shut-of the suspect channel using the Cell Enable menu (Figure 6-10) accessed via the keypad . It is not possible to automatically activate this mode intemally or remotely through the serial port. Prior to degrade mode operation, a degrade erence must be established . This establishes individual cell characteristics for ture degrade mode operation . To enter the point, perform the following : mode refreference use in fureference

[1] Calibrate the system and acquire a system deadload zero (mVN calibration also must acquire deadload zero). [2] Load system to at least 20% of full scale capacity. [3] Proceed to the Degrade Setup Menu (Figure 6-10) and make sure all cells are `On' . [4] With a display of ACQUIRE REFERENCE choose YES to advance to IS SCALE LOADED. Choose YES again to enter reference value.

When degrade mode is operational, a capital 'D' will appear on the right side of the intemal LCD weight display . A capital 'D' also will be transmitted in the status portion of the terminal and continuous serial outputs. If the Modbus option is present, status 1 (registers 40003, 40203, and 40403) bit 11 and input 12 (funotion 02) will be set to a `1 '. NOTE: Degrade mode cannot be implemented remotely using the serial interface or digital inputs. NOTE: For proper, degrade mode function, the scale center of gravity must remain the same. NOTE: To enter a degrade mode reference point, 'all cells must be functional, tumed 'On', and the system must be loaded to at least 20% of total capacity.

Degrade Setup Menu

MODIFY CELL ENABLES? YES NO EXIT
sine 77 l sm
SM

YES To Change Cell Status NENU Sw1 SW2 SW3 MENU YES NO _ EXIT -

wear 0

Return To Degarade Setup? Modify kidIvidual call Sables Step To Acquire Reference If AN Cells 'On' Return To Degrade Setup?

CELL #1 IS ON MODIFY NEXT

Neil

MODIFY

swr

SON

sws

MENU SWt SW2 SW3

MENU - Return To Previous Display MODIFY_ Modify cep On/Off Status NEXT - Step To Next Cep EXIT - Return Modify Cep Enables

To

Turn Bad Cep 'Off

0* accessabie If al eels are 'OK

ACQUIRE REFERENCE YES NO EXIT
KM

YES To Acquire Degrade Span Reference MENU SW1 SW2 SW3 MENU YES _ NO _ EXIT _ Return To Modify Cep Enables? Prepare To Acquire Reference Return To Degrade Setup? Display Return To Degrade Setup? Display

sm

SN2

Svc

IS SCALE LOADED YES NO EXIT

rEt

YES To Establish Degrade Reference Point-

Swf

SW

sm

MENU MENU - Return To Previous Display SW1 YES - Acquire And Store Reference Value (20% mrt) SW2 NO Return To Previous Display SW3 Off_ Return To Previous Display

Reference value MUST equal or exceed 2016 of system rated capacity

= - switch Praeasd

Figure 6-10. Degrade Mode Cell Selection and Reference

Page 6-10

6.2.8 Remote Input Enables (Optional) Paragraph 8.3.1 defines the four remote inputs optionally available with DXp-40 instruments. This section of diagnostic configuration determines whether or not individual remote inputs are enabled. Follow the flow diagram presented in- Figure 6-41 to enable or disable each of the four inputs as desired.

NOTE : Enabling the remote GIN input effectively disables the internal DXp- 40 G/N display and switch (SW2) function (see Figure 4-1). If internal G/N display and SW2 function is desired, DISABLE the G/N remote input. NOTE : If the remote filter input is disabled, filter 2 parameters are not accessible (see Figure 6-11 explanation).

DXp-40 Remote Input Enable/Disable Selection

SELECT INPUT ENABLE YES NO EXIT swl SW2 sw3 INPUT G/N = ENABLE MODIFY NEXT EXIT sot SW2 sw3 D fi" (~ INPUT ZERO -- ENABLE MODIFY NEXT EXIT
MENU SWi SW2 SW3 Choose Enable or Disable of Remote Inputs MENU _ YES _ NO _ ExIT _ Return to DEGRADE SETUP Advance to Gross/Net Input Return to Cell Diagnostics Return to Cell Diagnostics

Mean
(

Choose Remote G/N Enable/Disable NEW sWI SW2 SW3 MeM MODFr_ NEXT_ Exrr_ Return to SELECT INPUT ENABLES Choose ENABLE or DISABLE Advance to Zero kpA Return to Cd Diagnostics

Neal1 O

Choose Remote Zero Enable/Disable MENU SW1 SW2 SW3 Meal .. . MODIFY_ NEXT_ EXIT_

Return to SELECT Mn ENABLES Choose ENABLE or DISABLE Advance to Tare kput Return to Cell Diagnostics

MENU

INPUT TARE = ENABLE MODIFY NEXT EXIT

SWI SW2 Sw3

Choose Remote Tare Enable/Disable MENU SW1 SW2 SW3 KNU _ MODIFY_ NEXT_ EXIT_

Return to SELECT INPUT ENABLES Choose ENABLE or DISABLE Advance to Filter k4xA Return to Cell Diagnostics

LM

INPUT FLT = ENABLE MODIFY NEXT EXIT Son SW2 SW3 D O

Enable Second Filter Option (see paragraph 5.5) MENU SW1 SW2 SW3 MENU _ MODIFY_ NEXT_ EXIT_ Return to SELECT INPUT ENABLES Choose ENABLE or DISAAeLEReturn to SELECT INPUT ENABLES Return to Cell Diagnostics

" Selecting DISABLE nullifies second filter option. When enabled, remote input high = filter 1 and remote Input low = filter 2. - - 9wach Proud

Figure 6-11 . Input Enable Selection

SECTION VII Serial Communication

' 7.1 GENERAL
The DXp-40 is equipped with a variety of standard and optional serial output formats that are selected using a series of DIP switches (Figure 7-1). DIP switch positions 1, 2, and 3 (Table 7-1) allow four format choices ; Digi-System Network, continuous output, terminal/computer interface, and MODBUS RTU . Allen-Bradley Remote I/O is available as an option, but requires different documentation (see page 7-9). All types of DXp interfacing will be discussed in the folPositions 4-7 designate lowing paragraphs. transmitter address for applications requiring more than one DXp unit (Table 7-2). Switch position 8 is unused and should be left in the '0' (ON) position. 7 .1.1 LCp-400 Digi System Network. Up to 16 DXp-40 transmitters can be networked to the LCp-400 Network Controller. The half duplex format used to run the network is designed to provide remote operation of gross, net, tare, zero, and diagnostics, at high speed. This format is not intended for direct interface with a terminal or computer. The baud rate is selectable to accommodate systems with very long (low baud) or short (high baud) distances between DXp units. 7.1 .2 Standard Simplex Output (Continuous Output). The simplex output format is designed to transmit gross weight data (ASCII coded) to a remote terminal or computer. The accuracy of this point to point, digital communication interface is much greater than simple analog current or voltage approximates . Simplex outputs are transmitted in the format on page 7-2, top left-hand column .
Table 7-l . Serial Interface and Baud Rate Selections lnterface

000

loo 010 110

Digi-System Network
Digi-System Network Continuous Output Continuous Output Terminal Interface Terminal Interface MODBUS RTU

Digi-SystemNetwork

001
,111

011

101

Table 7-2. DXp-40 Transmitter Address Selections

1130000 .....

Figure 7-1. Serial Communication Parameter Selection Switch Page 7-1

STXIADRIPOLIDATAISPIUNITS/MODEISTATUSICRILF

Where:

STX= ADR= POL= DATA= UNITS= MODE=

STATUS= CRILF= SP=

lchar. Start of Text (02H) DXp-40 unit address, 3 ASCII characters Polarity sign ; space for positive data, ... -.. . minus (-) for negative-data. : . . 7 char, six digits with decimal point or leading space, leading zeros = spaces 2 char, in demand mode'LB' or 'KG' 1 char, in continuous mode 'L' or'K' 2 char, in demand mode . GR (gross), NT (net) TR (tare), or ZR (zero0) 1 char, in continuous mode, G (gross), N (net) T (tare), or Z (zero) lchar, M (motion), O (overload), or E (Error) 2 char: carriage return, line feed (ODH/OAH) 1 char, ASCII space (20H)

7.1.3 Optional Computerrrerminal Interface . This half duplex (transmit and receive) format is designed for two way communication between a single DXp-40, or a network of DXp-40 units, and a computer/terminal . Protocol accommodates all operations such as gross, net, tare, zero, as well as remote filter selection . Use of this format requires customer developed, device specific software to run the various network operations. Table 7-3 defines the terminal interface protocol .

Total bits per character = 1 start, 1 even parity, 7 data, and one stop.

Table 7-3 . Computer/Terminal Interface Protocol

ASCH Command 'G' 'N' 'T' 'ZI ,W, 'RT' `RZ' `QT' 'QZ' 'IN, 'QN' `QV'
u `Q/ ,

I Terminal Interface
Description GROSS Net Tare zero Weight Recall Tan Recall Zero Quad Tare Quad Zero Quad Gross Quad Net Quad rnV/V Quad Percent Action Switch to Gross mode Switch to Net mode Switch to Net mode & Tare Switch to gross mode and Zero Send Current Weight Send Current Tare Value Send Current Zero Value Send Individual Tare Values Send Individual Zero Values Send Individual Gross Values Send Individual Net Values Send Individual rnVN Values Send Individual %Load Values Page 7-2 Response '010 LG' [adr/poYdatWsp/units/`G'/stat/CRLF] '01 0 LN' [adr/pol/data/splunits/'N'/stat/CRLF]
1 01 0 IN , [adr/pol/data/sp/units/`N'/stat/CRLF] 1 010 LG' [adr/pol/data/sp/units/'G'/stat/CRLF]

'010 LG/N' [adr/poUdata/sp/units/mode/stat/CRLF]

101 0 LT' [adr/pol/data/splunitsrT'/stat/CRLF] 1010 LZ' [adr/poVdata/sp/units/`Z'/stat/CRLF] 1 01 +0+0+0+0 LT' [adr/pol/data/sp(for cells 1-4)/units/`T'/stat/CRLF] 101+0+0+0+012' [adr/pol/data/sp(for cells 1-4)/units/`Z'/stat/CRLF]

'01+0+0+0 +0LG' [adr/poUdata/sp(for cells 1-4)/units/'G'/stat/CRLF] '01 +0+0+0+0 0 LN' [adr/pol/data/sp(for cells 1-4)/units/'N'/stattCRLF]
101+0+0+0+0 0MV' [adr/poYdata/sp(for cells 1-4)/units/'MV'/stat/CRLF]

'01+0+0+0+0 0%L' [adr/pol/data/sp(for cells l-4Yunits/`%L'/stat/CRLF]

Table 7-3 (cont.) Computer/Terminal Interface Protocol

ASCII Command 'QB' `D%' 'DZ' Description Quad Balanci Diag. % Load Shift Diag. Zero Shift Diag. + Drift Diag. - Drift 'DN' 'DE' Diag. Noise Imbalance Diag. Errors ` Action Send Individual %Balance Values Send Current % Load Shift Send Current Zero Shift Send Positive Cell Drift Send Negative Cell Drift Send Current Std . Dev. (adding 2 decimal places) Send Current Diagnostic Errors Response '01 +0+0+0+0 O %B' [adr/pol/data/sp(for cells i-4yunits/`%B'/stat/CRLF] '01 +0.00 +0 .00 +0 .00 +0.00 D%' [adr/pol/data/sp(for cells 1-4yunits/`D%'/stat/CRLF] '01+0+0+0+0 0 DZ' [adr/pol/data/sp(for cells 1-4yunits/`DZ'/stat/CRLF] '01+0+0+0+0 O D+' [adr/pol/data/sp(for cells 1-4)/units/`D+'/smt/CRLF] '01-0+0+0+0 OD-' [adr/pol/data/sp(for cells 1-4)/units/`D-'/stattCRLF] '01 +0+0+0+0 0 Dn' [adr/pol/data/sp(for cells I-4)/units/`DN'/stat/CRLF] '01 LZDNO LZDNO LZDNO LZDNO', CRLFw Error for cells 1 - 4 L = Load Shift Z = Zero Shift D = Cell Drift N = Noise Imbalance O = Overload = No Error [adr/pol/data/sp/units/mode/stat/CRLF]

`SC' 'SD' 'SFxxxxxx'

Set Continuous Set Demand Set Serial Format: where Xxxxxx 0= 6 digits data 1= 7 digits data xXxxxx 0= leading spaces 1= leading zeros xxXxxx 0= decimal point 1= no decimal point xxxxxx 0= units (L/K) 1= no units xxxxXx 0= mode (G/N) 1= no mode xxxxxx 0= status 1= no status Set Filter Length x=1 : fitter 50 ms x=2 : filter 100 ms x=3 : filter 200 ms x=4 : filter 400 ms x=5 : filter 800 ms x=6 : filter 1600 ms x=7 : filter 3200 ms x=8 : filter 6400 ms Set NoiseBand xxx= 000 to 250 display counts Set Response Band xxx= 000 to 250 x 50 ms (0 to 12,500 ms max)

Send Constant Weight Data Transmission Weight Data Upon Request Changes To Serial Data Format

`Su'

Enter or Alter Filter Length

,say=,
'SRxxx'

Enter/Alter Noise Band Enter/Alter Response Band

Table 7-3 (coat.) Computer/Terminal Interface Protocol

ASCII Command `SAX' Description Set Band Filter : where : 0:5 seconds x--I x=2: 1 second x=3 : 2 seconds x--4: 4 seconds x=5: 8 seconds x=6 : 16 seconds x=7 :32 seconds x=8 : 64 seconds , .` Action Set New Band Filter: notes 1 & 2 ' ..' . . . Response

'SSnx'/CR

Set Setpoint 'n' Value n=setpoint #, x=value (up to 7 ASCII chrs followed by CRLF) Recall Serial Format 'O1 RFxxxxxx'/CRLF '01 RLx'/CRLF '01 RBxxx'/CRLF '01 RRxxx'/CRLF '01 RAx'/CRLF '01 RSnxxxxxxx'/CRLF '01 ROxxxx'/CRLF

'RL' 'RB' 'RR' 'RA' 'RSn' 'RO'

Recall Filter Length Recall Filter Band Recall Filter Response Recall Band Averaging Recall Setpoint # Value Recall Set Point Outputs(xxxx=wtpts 4-1) x='0' if setpoint off x--' I' if setpoint on Address '01' - '16' Enable Addressed FSk-40 To Communicate All Others, Disabled

'Axx'

Note 1 Note 2

Remote filter settings are not stored in EEPROM and will revert to EEPROM settings upon power down. Remote filter length is averaging applied to raw data before band or response is applied . Remote filter band has its own variable filter (band filt) which is applied to delta data that remains within the +/- band. Data remains within the band if the difference between the current data and the last averaged data is less than or equal to the band setting. Remote filter response setting is added to the noise band setting . Ifthe change in value from one conversion to the next exceeds the noise band and falls within the response band, the following takes place : the first time data falls within the response band, the full noise band filter is applied . If y on subsequent conversions, the change in value still falls within the response band, the noise band filter is progressively reduced until it reaches a length of 50 msec, at which point the noise band filter is restarted at the current weight value. When changing data is outside both the noise and response bands, the noise band filter is reset and restarted.

Abbreviations : adr pot data sp units mode stat CRLF "

address, 3 ASCII chars : first two are 'O1' - '16' followed by an ASCII space polarity : ascii plus or minus sign weight data: 7/8 characters, 6/7 digits w/decimal point or leading space ascii space (20H) one character: L=pounds, K=kilograms one character: G=gross, N=net weigh status : M=motion, O=overload, E=diagnostic error, space--normal carriage return line feed: two characters ODH OAH single quotes : ASCII character string Page 7-4

7.1.4 Optional MODBUS Protocol This interface method is applicable to virtually any PLC or other process control computer with MODBUS The interface provides communication capability . weight and diagnostics information and allows for remote computer control, of tare, zero, and grosstnet functions as well as the ability to download new calibration data and set point values . Information is transmitted in blocks of data thereby minimizing polling and response delays. The interface operates with the DXp-40 configured as the slave device and the host computer as the master. Table 7-4 presents a complete overview of register and bit allocations for each MODBUS format. Figure 7-2 (page 7-9) presents the interface baud rate and parity selections.
DXP40 READ ONLY REGISTERS (Function 03) READ ONLY ITEM 1 - STATUS 3 2 -STATUS 2 3 -STATUS 1 4 - GROSS 5-NET 6 - GROSS CELL 1 7 - GROSS CELL 2 8 - GROSS CELL 3 9 - GROSS CELL 4 10 - NET CELL 1 11 -NET CELL 2 12 - NET CELL 3 13 - NET CELL 4 14 - MVN/10 CELL 1 15 - MV/V/10 CELL 2 16 - MV/V/10 CELL 3 17 - MV/V/10 CELL 4 18 - % LOAD CELL 1 19 - % LOAD CELL 2 20 - % LOAD CELL 3 21 - % LOAD CELL 4 22 - PEAK TOTAL 23 - PEAK CELL 1 24 - PEAK CELL 2 25 - PEAK CELL 3 26 - PEAK CELL 4 27 - TARE 28 - TARE CELL 1 29 - TARE CELL 2 30 - TARE CELL 3 31 - TARE CELL 4 32 - ZERO 33 - ZERO CELL 1 34 - ZERO CELL 2 35 - ZERO CELL 3 36 - ZERO CELL 4 37 - % SENSITIVITY CELL 1 38 - % SENSITIVITY CELL 2 39 - % SENSITIVITY CELL 3 40 - % SENSITIVITY CELL 4 41 - % LOAD SHIFT CELL 1 42 - % LOAD SHIFT CELL 2 43 - % LOAD SHIFT CELL 3 44 - % LOAD SHIFT CELL 4 45 - POS DRIFT CELL 1 46 - POS DRIFT CELL 2 47 - POS DRIFT CELL 3 48 - POS DRIFT CELL 4 49 - NEG DRIFT CELL 1 50 - NEG DRIFT CELL 2 51 - NEG DRIFT CELL 3 52 - NEG DRIFT CELL 4 53 - NOISE CELL 1 54 - NOISE CELL 2 55 - NOISE CELL 3 FORMAT #1 ADR #REG 40001 40002 40003 40004 40005 40006 40007 40008 40009 40010 40011 40012 40013 40014 40015 40016 40017 40018 40019 40020 40021 40022 40023 40024 40025 40026 40027 40028 40029 40030 40031 40032 40033 40034 40035 40036 40037 40038 40039 40040 40041 40042 40043 40044 40045 40046 40047 40048 40049 40050 40051 40052 40053 40054 40055 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

MODBUS Functions Supported : 02 Read Input Status 03 Read Holding Registers 06 Preset Single Register 16 (10 Hex) Preset Multiple Registers DXP40 Data Formats Provided : FORMAT #1: One 16 bit signed integer -32768 tD 32767 for all weight data mv/v data is divided by 10 FORMAT #2: Two 16 bit signed integers for most weight data (the two integers must be added together to get -65536 to 65534) One 16 bit signed integer for diagnostic & %data One 16 bit signed integer for mv/v data (divided by 10) FORMAT #3: Two 16 bit signed integers for all weight data (the high word, 1st integer, must be multiplied by 32768 .0 then added to the low word, 2nd integer)

Table 7-4 . MODBUS Register Allocations

FORMAT #2 ADR #REG 40201 40202 40203 40204 40206 40208 40210 40212 40214 40216 40218 40220 40222 40224 40225 40226 40227 40228 40229 40230 40231 40232 40234 40236 40238 40240 40242 40244 40245 40246 40250 40252 40254 40256 40258 40260 40262 40263 40264 40265 40266 40267 40268 40269 40270 40271 40272 40273 40274 40275 40276 40277 40278 40279 40280 1 1 1 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 FORMAT #'1 ADR #REG 40401 40402 40403 40404 40406 40408 40410 40412 40414 40416 40418 40420 40422 40424 40426 40428 40430 40432 40433 40434 40435 40436 40438 40440 40442 40444 40446 40448 40450 40452 40454 40456 40458 40460 40462 40464 40466 40467 40468 40469 40470 40471 40472 40473 40474 40475 40476 40477 40478 40479 40480 40481 40482 40483 40484 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Page 7-5

Table 7-4 (cont.) Status Register Sit Definitions

STATUS REGISTER DEFINITIONS (Function, 03)

STATUS 1 (GENERAL STATUS) BIT 0 - ACTIVE FILTER, (0) = FILTER 1, (1) = FILTER 2 BIT 1 - MOTION BIT 2 - UNABLE TO TARE/ZERO BECAUSE OF MOTION BIT 3 - UNABLE TO ZERO BECAUSE OF LIMIT BIT 4 - IN CAL BIT 5 - DIAG ERROR BIT 6 - LIMIT OVERLOAD BIT 7 - A/D OVERLOAD BIT 8 - LOST TARE BIT 9 - ZERO BIT 10 - POWERUP BIT 11 - SPARE (0) BIT 12 - SPARE (0) BIT 13 - SPARE (0) BIT 14 - SPARE (0) BIT 15 - SPARE (0) STATUS 2 BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT 0 - SETPOINT 1 1 - SETPOINT 2 2 - SETPOINT 3 3 - SETPOINT 4 4 - OVERLOAD LIMIT CELL 1 5 - OVERLOAD LIMIT CELL 2 6 - OVERLOAD LIMIT CELL 3 7 - OVERLOAD LIMIT CELL 4 8 - A/D UNDERLOAD CELL 1 9 - A/D OVERLOAD CELL 1 10 - A/D UNDERLOAD CELL 2 11 - A/D OVERLOAD CELL 2 12 - A/D UNDERLOAD CELL 3 13 - A/D OVERLOAD CELL 3 14 - A/D UNDERLOAD CELL 4 15 - A/D OVERLOAD CELL 4

STATUS 3 (DIAGNOSTIC ERRORS) BIT 0 - LOAD SHIFT CELL 1 BIT 1 - LOAD SHIFT CELL 2 BIT 2 - LOAD SHIFT CELL 3 BIT 3 - LOAD SHIFT CELL 4 BIT 4 - ZERO SHIFT CELL 1 BIT 5 - ZERO SHIFT CELL 2 BIT 6 - ZERO SHIFT CELL 3 BIT 7 - ZERO SHIFT CELL 4 BIT 8 - DRIFT CELL 1 BIT 9 - DRIFT CELL 2 BIT 10 - DRIFT CELL 3 BIT 11 - DRIFT CELL 4 BIT 12 - NOISE CELL 1 BIT 13 - NOISE CELL 2 BIT 14 - NOISE CELL 3 BIT 15 - NOISE CELL 4
Page 7-6

Table 7-4 (cont .) DXp-40 Read/Write Register Allocations

DXp-40 Read/Write Registers (Functions 03, 06, 16)

Read/Write CommanD' SETPOINT 1 SETPOINT 2 SETPOINT 3 SETPOINT 4 FILTER 1 LENGTH FILTER 1 BAND FILTER 1 RESPONSE FILTER 1 BAND AVERAGE FILTER 1 MOTION FILTER 1 MOTION TIMER FILTER 2 LENGTH FILTER 2 BAND FILTER 2 RESPONSE FILTER 2 BAND AVERAGE FILTER 2 MOTION FILTER 2 MOTION TIMER DIAL SHIFT LIMIT DIAG ZERO SHIFT LIMIT DIAG DRIFT LIMIT DIAG NOISE LIMIT OVERLOAD CELL 1 OVERLOAD CELL 2 OVERLOAD CELL 3 OVERLOAD CELL 4 Format #1 ADR #REG 40101 1 40102 1 40103 1 40104 1 40105 1 40106 1 40107 1 40108 1 40109 1 40110 1 40111 1 40112 1 40113 1 40114 1 40115 1 40116 1 40117 1 40118 1 40119 1 40120 1 40121 1 40122 1 40123 1 40124 1 40125 1 Format #2 ADR #REG 40301 1 40302 2 40304 2 40306 2 40308 2 40310 1 40311 1 40312 1 40313 1 40314 1 40315 1 40316 1 40317 1 40318 1 40319 1 40320 1 40321 1 40322 1 40323 2 40325 1 40326 1 40327 2 40329 2 40331 2 40333 2 Format #3 ADR #REG 40501 1 40502 2 40504 2 40506 2 40508 2 40510 1 40511 1 40512 1 40513 1 40514 1 40515 1 40516 1 40517 1 40518 1 40519 1 40520 1 40521 1 40522 1 40523 2 40525 1 40526 1 40527 2 40529 2 40531 2 40533 2

COMMAND 01 = TARE net weight 02 = ZERO gross weight DIAG ZERO SHIFT LIMIT any pos weight value FILTER LENGTH 00 = soms 01 = looms 02 = 2OOms 03 = 400ms 04 = Booms 05 = 1600ms 06 = 3200ms 07 = 6400ms MOTION TIMER 00 = 1/2 SEC 01 = 1 SEC 02 = 2 SEC 03 = 3 SEC

SETPOINT any pos weight value

DIAG SHIFT LIMIT 0 - 99 (0% - 9.9%)

DIAG DRIFT LIMIT 0 - 99 counts NOISE BAND 0 - 250 counts ie. if counting by 21bs : 02 = 41bs RESPONSE BAND 0 - 250 counts OVERLOAD any pos weight value

DIAG NOISE LIMIT 0 - 99 counts BAND FILTER 00 = 0.5 seconds 01 = 1 second 02 = 2 seconds 03 = 4 seconds 04 = 8 seconds 05 = 16 seconds 06 = 32 seconds 07 = 64 seconds MOTION 00 = OFF 01 = 1 count 02 = 2 counts 03 = 3 counts 04 = 5 counts 05 = 10 counts 06 = 20 counts 07 = 50 counts

Note: counts refers to displayed counts. If the display is counting by 2 (x2 increments), then preseting a register to 9 would equal 18 Ib/pli/etc.

Table 7-4 (cont.) Input Status Bit Designations

INPUT STATUS DEFINITIONS (Function, 02)

INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT 1 - ACTIVE FILTER, (0) = FILTER 1, (1) = FILTER 2 2 - MOTION 3 - UNABLE TO TARE/ZERO BECAUSE OF MOTION 4 - UNABLE TO ZERO BECAUSE OF LIMIT 5 - IN CAL 6 - DIAG ERROR 7 - LIMIT OVERLOAD 8 - A/D OVERLOAD 9 - LOST TARE 10 -ZERO 11 - POWERUP 12 - SPARE 13 - SPARE 14 - SPARE 15 - SPARE 16 - SPARE 17 18 19 20 21 22 23 24 24 26 27 28 29 30 31 32 - SETPOINT 1 - SETPOINT 2 - SETPOINT 3 - SETPOINT 4 - OVERLOAD LIMIT CELL 1 - OVERLOAD LIMIT CELL 2 - OVERLOAD LIMIT CELL 3 - OVERLOAD LIMIT CELL 4 - A/D UNDERLOAD CELL 1 - A/D OVERLOAD CELL 1 - A/D UNDERLOAD CELL 2 - A/D OVERLOAD CELL 2 - A/D UNDERLOAD CELL 3 - A/D OVERLOAD CELL 3 - A/D UNDERLOAD CELL 4 - A/D OVERLOAD CELL 4 - LOAD SHIFT CELL 1 - LOAD SHIFT CELL 2 - LOAD SHIFT CELL 3 - LOAD SHIFT CELL 4 - ZERO SHIFT CELL 1 - ZERO SHIFT CELL 2 - ZERO SHIFT CELL 3 - ZERO SHIFT CELL 4 - DRIFT CELL 1 - DRIFT CELL 2 - DRIFT CELL 3 - DRIFT CELL 4 - NOISE CELL 1 - NOISE CELL 2 - NOISE CELL 3 - NOISE CELL 4
Page 7- 8

INPUT 33 INPUT 34 INPUT 35 INPUT 36 INPUT 37 INPUT 38 INPUT 39 INPUT 40 INPUT 41 INPUT 42 INPUT 43 INPUT 44 INPUT 45 INPUT 46 INPUT 47 INPUT 48

MODBUS Configuration Parameters

MODBUS NTERFACE? NO EXrr .. f YES
MEMJ

sm

SN2

SWS

MENU MENU SW1 YES SW2 NO _ SW3 EXIT ...

YES To Configure

MODBUS Parameters

Advance To 'DXP40 Version Information' Configure MODBUS Interface Go To IDXP40 Version Information' Return To Live Operation

BAUDRATE = 9600 MODIFY EXIT STEP

Menu swi

MENU MENU _ Return To Previous Display

Modify To Select 2400, 4800, 9600, or 19200 Baud SW1 STEP _ Advance To Parity Selection SW2 MODIFY.. Select Desired Baud Rate SW3 EXIT - Return MODBUS Interface?

swa

No Parity MODIFY STEP

MEW

Modify To Select Parity - No, ODD, EVEN

EAT 0
sws

swi

Svc

MENU MENU _ Return To Previous Display SW1 STEP _ Return To MODBUS Interface?
SW2 MODIFY.. Select Desired Parity Option SW3 EXIT ... Return To MODBUS Interface?

Figure 7-2. MODBUS Baudrate and Parity Selections (accessed from main menu)

7.1 .5 Optional Allen Bradley Remote 1/O This interface option uses Allen Bradley components in the DXp-40 to establish a remote I/0 network communication link to the PLC 5 series of programmable logic controllers . To the PLC, the DXp-40 represents 1/4 rack of discrete I/0 with 32 bits of input and output image files. All weight and status data uses discrete reads and writes to communicate scale information to the PLC in the shortest time possible. Non time critical information such as higher level diagnostics rely upon block transfers.

The complete details of this interface are covered in the BLH Allen-Bradley Remote 1/0 Interface Manual (TM014).

SECTION VIII Process Control

8.1 GENERAL .
The DXp-40 is available with optional analog outputs and discrete inputs and outputs that allow it to be used as a blind local controller supervised by a host computer (Figure 8-1) . This control strategy off-loads simple control actions to the DXp-40, thereby reducing processing overhead in the host. It also maximizes response time for more precise set point cutoff resulting in less product variation.

Main Menu (Accessed from Operation Mode)

uetu

"100000 LB GROSS GM ZER0

am

am

am

LIVE WEIGHT DISPLAY, GROSS MODE MBJU NBdU .. Advance To DWW Filter Setup Unless Error sort WD _ Display IncilvIdual toad coils SW2 W_ switch To Net Mods Sw9 ZERO - Push To Zero YES to enter/alter Digital Flits" Parameters WW WW _ Advance To `Cell Dlagnoatloe' Sort YES .- Enter Or Ar er Filter Parameters SW2 NO Go TO Col Diagnostics SW3 t7 UT _ Return To Uve Operation

kew

DWAL FLTER SETUP YES NO EXIT

O D D

CELL DIAGNOSTICS YES NO EXIT

MENU SWt SW2 SW3

CF M: Load ShMt, Zero SMM Drift, Nolse, Raw Date

MENU YES . NO t00T _ Advance To loo Oeltratbn' Perform Diagnostic Evaluation Go To Do Calibration Ream To Live Operation

DO CALBRA'n0N? YES NO EXrr

MEW

am

am

to Pwfonn System calibration LOW NIO U _ Rstm TO Uve Operation SWf YES - Enter Or Alter caMrstion Settings SW2 NO Retrm To Uve Operation SW3 EW _ Return To Uve Operation
YES

Lam

ANALOG OUTPUT SETUP? EXIT YES NO

YES To Enter/Alter Analog Output Parameters

am ~

am

MM SWf SW2 SW3

MOW YES _ NO EXIT -

Advance To 'Setpolrds7 Enter/Alter Analog Output Parameters Go To Seypottts? Return To Uve Operation

MEW

SETPOYJTS ? YES NO sm am 0

EXIT sm

YES To Conflgtre Relay Output Functions NEMJ NENU - Advance To LIODBW Interface? SWf YES _ Conflore Set Point Relay Outputs awl NO - Go To MODBW Interface? SW3 EXrr - Return Tb Uve Operation YES To Configure MODBUS Comrnunication Parameters NEM MW - Advance To 'DXP40 Version Information' soil YES _ contigtre MODBUS interface SW2 NO Go To 'DXP40 Version Information' SW3 EXrT _ Return To Uve Operation View Software Version# and Option Status MENU MEM - Return To Live Operation
- Swih ta

MCOBUS WTERFACE?

YES
swi

NO

1031 ,

fiis

am

EXIT D
SAM

BLH DXP40 OPTIONS

h6JJ

VER 10 -1-2-1

111111110

Figure 8-1 . Analog and Setpoint Selections in Main Menu

Page 8-1

8.2 OPTIONAL ANALOG OUTPUT

The DXp-40 is available with an optional 0-10 V and 420 mA analog output, representing either gross or net weight . This output is based upon a 16 bit digital to analog (D-A) conversion which represents. up to, one part in 65536 of analog precision . The scaling of the output is accomplished after the DXp-40 is calibrated and can be ranged for any portion of the gross or net weight output curve. Systems using the analog output for level control will typically configure the output to track gross weight (live product weight) . Batch control systems that use weight as a variable to determine set point cutoffs can be configured to operate in the net weighing mode while using a discrete remote input to activate the tare function. Connect a current/volt meter to the appropriate analog output points (see Figure 2-5) and proceJe with configuration as shown in Figure 8-2 .

Analog Output Configuration

ANALOG OUTPUT SETUP? EXIT YES NO swi SM YES To Confl,Rre Or Re-Core The Analog Output MENU MENU .. SW1 YES _ Perform Analog Output Configuration SM NO Sw3 ENT View/Modify Zero Reference Analog Output Value MM MBII) _ sack lip TO Previous Display SWf STEP .. Go To 2MM 00V) Analog Reference Setup SW2 MODIFY-Enter/Alter 4mA (OV) Output Weight Value SM EXIT - Return To Mabg Output Setup? View/Modify Full Analog Value (Usually Scale Capacity) MENU MENU - Bad* up To Previous Display SM STEP .. Go To Grow/Not Trad*g Sw2 MODIFY-.Moc9ty Displayed weight Value SW3 EXIT .. Return Analog Output Setup? Select MENU SW1 SW2 SW3 Gross Or Net Weight Tracking For Analog Output MENU - Badc Up To Previous Display STEP _ Go To Caftrate Output? MODIFY-Select Gross Or Net DOT .. Return To Analog Output Setup?

4MA (OV) _ +0000000 LB EXIT STEP MODIFY

RAM

kew

20MA (10V) _ +0010000 LB EXIT STEP MODIFY

TRACK GROSS WEIGHT MODIFY EXIT STEP

MM

CALIBRATE OUTPUT? EXIT YES NO sw2 swat sm

YES To Customize Analog Output Range MENU MM - Back Up To Previous Display SM YES . Set Low Analog Output Reference SW2 NO Go To Analog Output Setup? SW3 EXIT - Go To Analog Output Setup? Establish Low Analog Output Reference Point MENU MENU - Sadc Up To Previous Display SW1 STEP - Go To cabrsf Output? SW2 MODIFY-Set Count Value For Zero Analog Output SW3 EXIT - Return To Analog Output Setup?

4MA (0000002 COUNTS EXIT STEP MODIFY

PAM SIMS

20mA00065002000NTS MODIFY EXIT STEP

NEM

sm

SAM

Establish High Analog Output Reference Point MENU MENU _ Back up To Previous Display SW1 ST'S .. Go To Celxate Output? SW2 MODIFY-Set Count Value For Full Analog Output SW3 EXIT .. Return To Analog Output Setup? " swath Rwned

Figure 8-2. Analog Output Configuration Flow Diagram Page 8-2

8.3 OPTIONAL DISCRETE INPUTS and OUTPUTS

8.3.1 Inputs Remote initiation of zero, tare, gross/net, and a two position digital filter can be : accomplished=-using-the optional remote input connections (Figure 8-3). Remote inputs can be triggered by 12-24 Vdc input signals (,DIAL A - common output rating on many PLCs), open collector TTL devices (DIAL B), or other relays (DIAL C). Open collector TTL and 12-24 VDC inputs are enabled in the logic low ('0') state . Logic low voltage is less than 5 Vdc and current sinking capability must be no less than 3 mA. For a logic high ('1'), the voltage range is 10 to 28 Vdc. If TTL triggering is desired, open collector components MUST be used. When using external relays, a closed relay equals '0' when one side of the relay is connected to digital common and the other side is connected to the input. A'1' is achieved by opening the relay. PLC or DCS batch control systems can be configured to use these remote functions in combination with set point outputs to provide local ingredient add/discharge control .lnputs function as shown in Figure 8-3 . NOTE: DXp-40 units ship with all remote inputs disabled . To enable any or all of the remote inputs, refer to paragraph 6.2.8 for instructions.

Digital Inputs
OPEN (1) Gross -- - - Filter 1 CLOSED (0) Net Zero Tare Filter 2

INPUT # Input 1 Input 2 Input 3 Input 4

TYPICAL PLCIDCS INTERFACE

'I'= 12 to

'0'= Equal DiAG A

28 Vdc to or less than 5 Vdc

TYPICAL OPEN COLLECTOR TTL INTERFACE '1'= Open collector '0' = Vce equal to or less than 5 Vdc DIAG B

+ 15V

TYPICAL RELAY INTERFACE '1' = Open contact '0' = Closed contact

Figure 8-3. Digital Input Functions and Circuitry

8.3.2 Outputs Four programmable contact relay outputs are available as set point or diagnostic alarm outputs. In the set point mode, each relay can be programmed to track gross or net operation and to have a deadband to eliminate relay chatter. In addition, the polarity y (normally open or normally closed 'position)'of the relay is selectable using jumpers on the relay board (units are shipped in the normally open position) . Aso, the relay condition above or below set point, or operation and a polarity sensitive mode is selectable. Set point values can be entered via the keypad or remotely through the serial port.

In addition to the use of relays for set point operation, the outputs can be configured to track any of the opThis provides a very tional diagnostic functions . simple method of communicating diagnostic alarms to a host computer or operator. Figure 8-4 provides instructions for relay configuration and Figure 8-5 (next page) shows how to enter actual setpoint values . Tables 8-1 and 8-2 (next page) show setpoint polarity and hysteresis capability . NOTE: NC/NO (normally closed/normally open) selection not available with solid state relays

Setpoint Relay Output Configuration

SETPOINTS? YES NO EXIT
YES To ConVre Or Re-Configure The Analog Output MM MENU SM YES _ Perform Setpobt Output Configuration SM NO _ SM EM _ YES To Enter/After Aciuel Setpolnt Values MENU M_ eadk up To Previous olaplay SM YES _ Go To se0oht Entry Sub-Wnu ft" 8-5) SW2 NO _ Advance To Setpolnt CorNlpuratlon SM EXIT .. Return To Setpoints? YES To Configure SetpoiM Type, Polarity, and Hysteresis NENU NEW _ Badc Up To Previous Display SW1 YES _ Boon Setpoint Configuration SW2 NO _ Return To Setpohts? SW3 EXIT _ Return To SeVcints? Vlew/Moddy Setpoint (1-4) Configuration NEtaJ MENU . Back Up To Previous Display SM STEP - Sebd Next Sstpoht SM MODIFY-Make Changes To current Set" SW3 EXIT _ Rehm To Previous Display Select MBM SM SM SW3 SetpoInt 'Type' From Table 8-1 (Gross, Net, Alarm) MBW _ Bad* Up To Revbus Display STEP _ Go To Next Parameter Selection MODFY_Chsngs Setpotnt 'type EXIT _ RetUM To Setpokut # (1-4)

SETPOYT VALM8? YES NO EXIT

MW

SETPONT GONFIm YES NO EXIT sw+ sw2 swa

SETPOIYT # (1-4) STEP MODIFY EXIT

MEW

GROSS SETPONT STEP MODIFY EXIT

swr sm swe

NEW

ON BELOW SETPONT STEP MODIFY EXIT am swi SIM 0

Choose Relay ion' Status (Above Or Below Setpoint) NEMJ MENU _ Back Up To Previous Display SM STEP _ Go To Next Parameter Selection SW2 MODFY_Changs Relay Energized COn9 Status SW3 EXIT _ Return To Setpotut # (1-4)

wsW

HYSTERESIS = 000010 EXIT STS MODIFY a

swr

sw2

sure

Enter/Alter Setpolnt Hysteresis Value MEMJ MDN _ Back Up To Previous Display SW1 STEP _ Go To Setpoht # (1-4) SW2 MODIFY-View Or Modify Currant Hysteresis Value SW3 EXIT .. Return To Setpolnt # (1-4)

- swmh Pr Page 8-4

aW

Figure 8-4. Relay Output Configuration

Setpoint Entry Sub-Menu s+(raYva.Ur :ewr vEw srEP

D D

View Current Setpoint Value MEMJ NEW _ Return To Previous Display SWI STEP . Select Next Setpoint (1-4) SW2 VIEW ._ View Existing Setpoint Value SW3 EXIT -. Return To Previous Display Modify To Enter/Alter Displayed Setpoint Value MENU MEW _ Bade Up To Previous Diapiay SWI STEP .. Return To Setpoint #(1-4) Vskie SW2 MODIFY_Change Displayed Setpolnt Value SW3 EXIT . Return To Setpoint e(1-4) Value No Setting For Diagnostic Alarm Outputs NEW . MEW _ Return To Setpoint #(1-4) Value SWI STEP _ Return To Setpoint +i(1-4) Value SW3 EXIT . Return To Setpoint #(1-4) Value

STEP
SWI

srPrrr

MooFr

" 0000000 LB

DiXcmsm ALARM oQr Si~

D
MEW

0
O

ovr

sw3 D

Figure 8-5 . Setpoint Value Entry Sub-Menu

= * SWAtch Pressed

Table 8-1 . Relay Output Selections and Parameters Selectable Setpoint Types And Respective Parameters Setpoint Type Gross Setpoint Net Setpoint Diagnostic Alarm Programmable Parameters On Below Or Above Hysteresis Hysteresis

Table 8-2 . Relay Output Polarity Selections Setpoint Type Gross On Below Setpoint Gross On Above Setpoint Net Setpoint (ABS Value) Diagnostic Alarm Relay Energized Below Setpoint Above Setpoint Below Setpoint If Diagnostic Error Hysteresis Active Below Setpoint Above Setpoint Below Setpoint None

Appendix A

Spare Parts

Power Supply/AD Board Display Board (standard LCD panel) Standard CPU Board w/o EPROM Programmed EPROM (specify code) Load Cell Terminal Block Connector (7 pos) RS-485 Terminal Block Connector (4 pos) Analog and Relay I/O Board (Optional) CPU Board with Allen-Bradley Remote I/O (w/o EPROM)

PN 465741-3 PN 466003-3 PN 466217-2 PN 466216-1 (147697-8) PN 149005-8 PN 148709-8 PN 466870-2 PN 466805-2

Documentation

Outline Drawing NEMA 4/4X Outline Drawing Exp. Proof Outline Uncased Interconnect Wiring Assembly Drawing Operator's Manual

PN 464952-3 PN 465545-3 PN 466211-3 PN 466181-3 PN 466126-3 TM 008

Accessories

625 Calibrator Conduit Fitting Kit Cable Fitting Kit

PN 203797 PN 465231 PN 465232

Appendix A1

Appendix Outline and Wiring Drawings

Customer Wiring Outline Standard Enclosure Outline Explosion-Proof Enclosure

Page B-2 Page B-3 Page B-4

Appendix B-1

CAD ML NTME 466181

2
LOAD CELL INTERCONNECTING WIRING TYPICAL COLOR

DIGITAL INPUT INPUT INPUT INPUT / 1 2 3 OPEN

INPUTS CLOSED NET ZERO TARE I FILTER 2 1 CH4 N N N 1 1 CH3 CH2 CHI

JUMPERS

SIONK

GROSS -----FILTER

SEE NOTE 2

INPUT 4

+ +

to_
+

86Q9629 IFNNN NN
IT VIvio I I + + I IJ:1 + = U1 I I I } +

@
+

n
I

NN wg~_
I + + +

C
NOTES :

SHKLD

VELLOw

I . JUMPER WIRES REQUIRED FOR FnUR WIRE LOAD CELLS 2 . FOR SYSTEMS USING TENSION LOAD CELLS. THE RED AND WHITE LEADS MAY NEED TO BE REVERSED FOR POSONE OUTPUT.

TYPICAL

INPUT

+15V 1001(

LC

INPUT

1Sb a$$$$

Ab

t t t t

dd~id~d~~

n a n -

LOAD

CELL CH2 RELAY OUTPUT MA%NUM RATINGS 20V AC/DC Al 0.4 NIPS RELAY POINTS AM SET FOR NORMALLY OPEN CONDITION. FOR NORMALLY CLOSED CONDITION REFER TO MANUAL

1N4004

AUX

0 PIN NAME MENU 0 COM 4 PIN NONE 4 IOV

10V OPTION

LOAD RESISTANCE 25K OHM

SIGNAL + -

MIN

OFF

SAM SEL RATE ADOR ~!L73~Y1-1 a9 tI EYII I~

20MA OPTION _

20MA

S-NK
+

LOAD RESISTANCE 600 OHM MAX

COM BAUD SWITCH POS 1 2 3 ON ON ON RATE INTERFACE 485

RS SIGNAL NAME TIm+ TIC-

COMMUNICATION SIGNAL TRANSMIT DATA + TRANSMIT DATA JUMPER THESE PONS TO CONNECT ME INTERNAL 220 RESSToR ACROSS DATA LINES. INSTALL ONLY ON 7NE (END) LAST DXP ON THE COMMUNICATIONS LINE

BAUD RATE -

ON -

OFF ON

ON - 28M OFF ON - $7600 1200 906 1240 9600 9600

9600

NETWgIBW INTERFACE HEIYgIM INTERFACE NETWORK INTERFACE CONTINUOUS OUTPUT COKFINUOVS OUTPUT TERMINAL ,INTERFACE TERMINAL INTERFACE COMPUTER INTERFACE

OFF OA ON ON ON OFFOFF ON ON OF OFF OFF--

TWYRH70R TERMINATOR

ow

OFF OFF Off -

AUX ADDRESS 4 ON OFF ON OFF ON OFF ON OFF ON OFF ON OFF ON OW ON OFT SWITCH POS 5 6 7 ON ON ON ON ON ON ON 8 ON ON ON ON ON ON ON ON ADDRESS 16 1 2 3 4 5 6 7 B 9 10 11 12 13 14 TS HAZARDOUS DIVISION CL 1, CL 2, CL 3, 2 AREA APPROVAL OR GR A-0 F,G FUSE REPLACEMENT 1/M ~ IRK VOLTAGE SELECTOR SWRCN POWER INPUT PIN NNIE ONE, RID SN GD RST

1/0

OPTION

Tn SIC OWA COMMON RECENT DATA 5 VOLTS ISOLATED TRANSMIT DATA REQUEST TO SEND

IIS/220 VAC 1/4 AMP SO - 00 HI _CAMWam LANE SELECTOR SNTO1 MUST BE IN PRMER POSITION OR DAMAGE MAY OCCUR__

OFF ON

OFF ON ON ON OFF ON ON OFF ON OFF OFF ON OFF OFF ON ON ON ON ON

OFF ON OW ON

CSA
HAZARDOUS DIVISION CL CL CL 1, 2, 3, DIV 2 2 AREA APPROVAL OR A-D GR E,F,G DIV 2 DIV 2 DIV 2

OrF ON OFF ON OFF ON OFF ON ON OFF OFF ON ON OFF OW ON OFF OFF 01E ON OFF OFF OFF ON

DN 2 DN 2

LOAD CELL

LOAD CELL 3

25 Z7 C N CL a Q COMMUNICATIONS AND OPTIONS

[8] AC POWER DIA .313 HOLES 4PL 8 .0 [203] 8 .45 [2 1 4] MOUNTING NOTE: [ NUMBERS IN BRACKETS INDICATE MILLIMETERS )

1 .375 [35]

~ ws dl 1 MOAN Nn 1 a" nu 46350 xx

3NE6T 1 GP 1 N0 ON. N0.

NAUE

4" 3 3sS OESCRDOW

-3 REO

COVER ON

COVER REMOVED

m
C

.2S a
Q Q

_ "YR i "M B

"YE 4

CODE (DENT 03089 W,Y A~wYi 7,wwaEM P"

YN OfCRCNGf W M M ",WW Y wJ Wr1 KAA ^I`~+`4 w WY `7 Mwr .Miiw.I .Nwj W .~T ` LARL 5-m 3A L/u/": '

raw PEII LCN

w~n ..

HUH

77= 4M
4

DXp EXPLOSION PROOF

CLASS 1, GAP A.C.0

TRONU INC.

9LN

OUTLINE

4 6 5 5 4 5 -31B