Model IOP
Analog Output Module
278566 Rev. A3
Refer to this publication for complete and accurate information that helps you better operate and service Valmet
equipment. Your comments and suggestions are welcome.
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Valmet 278566
Contents
Analog Output Module Preparation and Adjustment .................................................................. 1
Introduction ............................................................................................................................................... 1
Description................................................................................................................................................................ 1
Preparation and Adjustment ...................................................................................................................................... 6
Base Address ............................................................................................................................................................ 6
Configuring a Data Block ..................................................................................................................................... 7
Configuring a max 1 Data Point............................................................................................................................ 7
Output State on Loss of I/O Bus Communications ................................................................................................. 10
Redundant Applications .......................................................................................................................................... 10
Default Switch Settings ........................................................................................................................................... 11
Modes of Operation ................................................................................................................................................ 11
Normal Mode ...................................................................................................................................................... 12
Three-Wire Mode Initialization .......................................................................................................................... 12
Calibration Mode ................................................................................................................................................ 13
Specifications .......................................................................................................................................................... 14
Valmet 278566
Preparation, and Adjustment
Valmet 278566
Analog Output Module
Preparation and Adjustment
Introduction
This publication shows you how to install, prepare, and adjust Analog
Output Modules 080403 and 080424.
For mounting and power wiring information, refer to Publication 278563,
Input/Output System Installation and Preparation. For field wiring informa-
tion, refer to Publication 278562, Field Wiring.
Description
The Analog Output Module has 8 output channels each of which uses two
wiring modes, two wire and three wire. Two-wire mode is only used for 4 to
20 milliamps, and three-wire mode for other ranges (e.g. 0 to 16 milliamps, 0
to 20 milliamps or 4 to 20 milliamps). The modules are supplied for three-
wire mode operation on all channels. To select two-wire or three-wire modes
for an individual channel, you must change jumpers on the printed circuit
assembly.
Three-wire mode is the only way to get a true zero based signal, e.g. 0-16
mA. Two-wire mode, which has simpler wire connections, is used to
simulate a two-wire transmitter. Refer to Tables 4 and 5 for jumper positions
for either two-wire or three-wire output.
Module 080403 outputs are individually protected by 1/8A 3AG fuses
accessible on the front panel. Module 080424 outputs are protected by
positive temperature coefficient (PTC) self-resetting resistors. Outputs are
connected to the terminal board as shown in Figures 1 and 2, which illustrate
connections for one channel each. Connections for all 8 channels are listed
in Tables 1 and 2.
Valmet 278566
Analog Output Module Preparation and Adjustment
Figure 1. Two-Wire Output Connections, Analog Output Module 080403
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Analog Output Module Preparation and Adjustment
Table 1. Two-Wire Terminal Assignments, Analog Output Module
Terminal
Number Channel Designation
1 No connection
2 1 Supply
3 1 Load - Return
4 No connection
5 No connection
6 2 Supply
7 2 Load - Return
8 No connection
9 No connection
10 No connection
11 No connection
12 3 Supply
13 3 Load - Return
14 No Connection
15 No Connection
16 4 Supply
17 4 Load - Return
18 No connection
19 No connection
20 No connection
21 No connection
22 5 Supply
23 5 Load - Return
24 No connection
25 No connection
26 6 Supply
27 6 Load - Return
28 No connection
29 No connection
30 No connection
31 No connection
32 7 Supply
33 7 Load - Return
34 No connection
35 No connection
36 8 Supply
37 8 Load - Return
38 No connection
39 No connection
40 No connection
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Analog Output Module Preparation and Adjustment
Figure 2. Three-Wire Output Connections, Analog Output Module 080403
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Analog Output Module Preparation and Adjustment
Table 2. Three-Wire Terminal Assignment, Analog Output Module
Terminal
Number Channel Designation
1 1 Return
2 1 Supply
3 1 Load
4 No connection
5 No connection
6 2 Supply
7 2 Load
8 No connection
9 No connection
10 2 Return
11 3 Return
12 3 Supply
13 3 Load
14 No Connection
15 No Connection
16 4 Supply
17 4 Load
18 No connection
19 No connection
20 4 Return
21 5 Return
22 5 Supply
23 5 Load
24 No connection
25 No connection
26 6 Supply
27 6 Load
28 No connection
29 No connection
30 6 Return
31 7 Return
32 7 Supply
33 7 Load
34 No connection
35 No connection
36 8 Supply
37 8 Load
38 No connection
39 No connection
40 8 Return
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Analog Output Module Preparation and Adjustment
Preparation and Adjustment
You may change jumper and address switch settings on the printed circuit
assembly. Ordinarily, addressing and jumper positions are set at the factory
and require no further attention. If you intend to change settings, consult this
section first before installing modules. This may eliminate the need to
remove, adjust, and reinstall modules later.
The Analog Output module is supplied with jumpers in position for three-
wire operation. Refer to Table 3 for base address settings, Table 4 for two-
wire mode jumper settings, and Table 5 for three-wire mode jumper settings.
Note: If Analog Output Modules are used in a redundant application, they
must be configured for three-wire mode.
Base Address
The two rotary switches, at the backplane connection, are to be set to the I/O
module base address number. Since the Analog Output module is an 8 word
module, only the base addresses listed in Table 3 are allowed.
Table 3. Base Addresses
S2 Setting S1 Setting Base Address
3 0 48
3 8 56
4 0 64
4 8 72
5 0 80
5 8 88
6 0 96
6 8 104
7 0 112
7 8 120
8 0 128
8 8 136
9 0 144
9 8 152
A 0 160
A 8 168
B 0 176
B 8 184
C 0 192
C 8 200
Table 3. Base Addresses (Continued)
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Analog Output Module Preparation and Adjustment
S2 Setting S1 Setting Base Address
D 0 208
D 8 216
E 0 224
E 8 232
In maxDNA systems, module address and channel identification are defined
when you configure a module using maxTOOLS.
When you define a module associated with a particular DPU, the
maxTOOLS automatically assigns an I/O base address. You would then set
the module address on the card to match the maxTOOLS assignment.
Note: in a mixed max 1/maxDNA system where module base addresses were
previously assigned and cannot be changed, you may override the
maxTOOLS address assignment and assign your own addresses. Certain
restrictions must be observed.
After you define the module, you may then assign a signal name for each
associated channel with a module type.
Configuring a Data Block
Use an Analog Parallel Out Data Block to write analog information to the
parallel I/O bus. Refer to Publication 278465, Data Block Configuration, to
learn how to configure an API block.
Configuring a max 1 Data Point
In an earlier max 1 system using Operator Stations, to configure an APO
Data Point (Type 04) you must define its Configuration Word.
To configure the Input Bus Register Address set the CCC field of the
configuration word to the following:
CCC = Input module base address + AO channel number - 1
For example, if S2 switch setting is A and Sl switch setting is 8, and the
channel number is 4, the CCC field of the configuration word would be set
to 171. See Publication 278443, Model 555 DPU Data Point System
Configuration.
Table 4. Jumper Positions for Two-Wire Mode
Channel Jumper Number Jumper Position
1 W1 E2-E3
1 W2 E5-E6
1 W3 E8-E8P
1 W4 E9-E10
Table 4. Jumper Positions for Two-Wire Mode (Continued)
Channel Jumper Number Jumper Position
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Analog Output Module Preparation and Adjustment
1 W5 E11-E12
2 W6 E16-E17
2 W7 E19-E20
2 W8 E22-E22P
2 W9 E23-E24
2 W10 E25-E26
3 W11 E30-E31
3 W12 E33-E34
3 W13 E36-E36P
3 W14 E37-E38
3 W15 E39-E40
4 W16 E44-E45
4 W17 E47-E48
4 W18 E50-E50P
4 W19 E51-E52
4 W20 E53-E54
5 W21 E58-E59
5 W22 E61-E62
5 W23 E64-E64P
5 W24 E65-E66
5 W25 E67-E68
6 W26 E72-E73
6 W27 E75-E76
6 W28 E78-E78P
6 W29 E79-E80
6 W30 E81-E82
7 W31 E86-E87
7 W32 E89-E90
7 W33 E92-E92P
7 W34 E93-E94
7 W35 E95-E96
8 W36 E100-E101
8 W37 E103-E104
8 W38 E106-E106P
8 W39 E107-E108
8 W40 E109-E110
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Analog Output Module Preparation and Adjustment
Table 5. Jumper Positions for Three-Wire Mode
Channel Jumper Number Jumper Position
1 W1 E1-E2
1 W2 E4-E5
1 W3 E7-E8
1 W4 E10-E11
1 W5 E13-E14
2 W6 E15-E16
2 W7 E18-E19
2 W8 E21-E22
2 W9 E24-E25
2 W10 E27-E28
3 W11 E29-E30
3 W12 E32-E33
3 W13 E35-E36
3 W14 E38-E39
3 W15 E41-E42
4 W16 E43-E44
4 W17 E46-E47
4 W18 E49-E50
4 W19 E52-E53
4 W20 E55-E56
5 W21 E57-E58
5 W22 E60-E61
5 W23 E63-E64
5 W24 E66-E67
5 W25 E69-E70
6 W26 E71-E72
6 W27 E74-E75
6 W28 E77-E78
6 W29 E80-E81
6 W30 E83-E84
7 W31 E85-E86
7 W32 E88-E89
7 W33 E91-E92
7 W34 E94-E95
7 W35 E97-E98
8 W36 E99-E100
8 W37 E102-E103
Valmet 278566 9
Analog Output Module Preparation and Adjustment
Table 5. Jumper Positions for Three-Wire Mode (Continued)
Channel Jumper Number Jumper Position
8 W39 E108-E109
8 W40 E111-E112
Output State on Loss of I/O Bus Communications
Jumper W42 in the E116-E118 position forces all analog outputs to maintain
their values when communication with the I/O bus ceases. When
communication is restored, the analog output values will resume with the
current APO value. Jumper W42 in the E117-E118 position forces all the
analog outputs to go to zero when communication with the I/O bus ceases
(DMT). When communication is restored, the analog output values will
resume with the current APO value. Jumper position E116-E118 is the
normal position. Table 6 lists the two jumper positions.
Note: In a system with redundant DPUs, it may take up to one second for a
Data Block to resume communication with an I/O module after failover
occurs. This time delay will allow the dead man timer to signal an I/O Bus
communication loss. If bumpless transfer is desired, the jumpers should be
positioned to maintain the output values on communication loss.
Table 6. Output State on Loss of I/O Bus Communication
W42
Jumper Position Description
E116-E118* Outputs freeze on loss of I/O bus communications
E117-E118 Outputs are turned off on loss of I/O bus communications
*Jumper position as supplied
Redundant Applications
The position of jumper W43 determines whether the backup line of the DPU
is ignored (non-backup applications) or scanned (redundant backup
applications). For backup applications, when the backup line is low (active
file), normal analog outputs will be produced. When the backup line is high
(inactive file), the analog outputs will drop to zero. Jumper position E119-
E120 is the normal position. Table 7 lists the two jumper positions.
Jumper W43 must be in the E120-El2l position when the DPU is used in
redundant applications. If the jumper is incorrectly positioned, both module
outputs will add together, giving twice the expected output.
10 Valmet 278566
Analog Output Module Preparation and Adjustment
Table 7. Output Control Select
W43
Jumper Position Description
E119-El20* Backup line ignored
E120-El2l Backup line going high turns off outputs
*Jumper position as normally supplied
Jumper W45 in the E125-E126 position (default) indicates that this module
is attached to the primary DPU or controller. In the secondary module
jumper W45 must be in position E124-E125, indicating that this module is
attached to the secondary DPU or controller. When there is no information
or conflicting information on the Input/Output bus concerning the Backup
status, the module designated as primary will produce outputs, while the
module designated as secondary will shut off its outputs. Table 8 lists these
two jumper positions.
Note: The Analog Output module can only be used in a redundant
application if configured for three-wire mode.
Table 8. Primary or Secondary Select
W45
Jumper Position Description
E125 - E126* This module is primary
E124 - E125 This module is secondary
*Jumper position as normally supplied
Default Switch Settings
The default setting for the Analog Output module front panel, channel select
rotary switch is 0. The default setting for the calibration (CAL) switch is in
the OFF (down) position. The default setting for the Span/Zero switch is in
the Zero (down) position.
Modes of Operation
Modes of operation are normal mode, three-wire mode initialization, and
calibration mode.
Valmet 278566 11
Analog Output Module Preparation and Adjustment
Normal Mode
The Analog Output module powers up in normal mode when the channel
select rotary switch on the front panel is set to any position and the
calibration switch is in the OFF (down) position. The span/zero switch can
be in any position. The 1 to 8 channel select rotary switch settings indicate
which analog output channel will be calibrated when the calibration switch
is set ON (see “Calibration Mode”). In normal mode, all 8 analog outputs
will be updated as long as APO Data Blocks or Control Blocks are
configured in the controller or DPU. The updates to the analog output will be
based on the current calibration constants called span and bias using the
following equation.
AO = [(per cent output/100) x span) + bias
The channel select rotary switch setting of 0 indicates that no channels can
be calibrated when the calibration switch is set on. The analog outputs will
still be updated in this case. The channel select rotary switch setting of 9
indicates that alternate functions can be selected. When the channel select
rotary switch is set to 9, the analog outputs will still be updating and no
channels can be calibrated when the calibration switch is set ON. Two
alternate functions which can be selected are three-wire mode initialization
and offline diagnostics.
The green LED on the front panel will stay lit when the Analog Output
module is active. It will flash when communications with the extended
controller ceases. If it is out, there is no power to the Analog Output module.
Three-Wire Mode Initialization
When any Analog Output module channel is changed from two-wire mode to
three-wire mode, or after diagnostics have been performed, the calibration
memory will have invalid data (i.e., the spans and biases are unknown). If
the Analog Output module is powered up without having initial values in the
calibration memory, the calibration (in Calibration Mode) will take a long
time. This mode initializes the spans and biases of all 8 analog output
channels so that 0% and 100% for three-wire mode approximate 4 to 20
milliamps.
To initialize the module:
1. Configure the DPU with 8 APO Data Blocks or Control Blocks, one
for each analog output channel. All 8 APO Data Blocks or Control
Blocks should be in manual mode with their high ranges set to 100,
their low ranges set to 0 and the analog output values to 0%.
2. Turn the Channel Select rotary switch on the Analog Output module
front panel to 9.
3. Place the Calibration switch in the ON (up) position.
12 Valmet 278566
Analog Output Module Preparation and Adjustment
4. Place the Span/Zero switch in the span (up) position.
5. Simultaneously press the Raise and Lower pushbuttons. This sequence
will initiate the Analog Output module initialization. The analog
outputs should continuously output something close to 4 milliamps.
6. Move the Calibration Switch to the OFF (down) position. This will
save the spans and biases in the calibration memory.
At this point, the Analog Output module is in normal mode and all analog
output channels can now be more accurately calibrated for 4 to 20 milliamps
or any other span. See “Calibration Mode.”
Calibration Mode
Once the Analog Output module is in Normal Mode you will move a switch to
enter calibrate mode. When the Analog Output module is in Calibration Mode,
all analog outputs will still be updating. The analog output channel selected to
be calibrated is indicated via the channel select rotary switch where 1 indicates
analog output 1 (channel 1) and 8 indicates analog output 8 (channel 8). The
channel select rotary switch may be changed before entering Calibration Mode
or during Calibration Mode.
To complete the module calibration.
1. Connect a 250 Ohm ±0.05% load resistor in the output of the channel to
be calibrated and connect a DVM across this resistor. Use the most
accurate scale on the DVM.
2. Select Calibration Mode by moving the calibration switch to the ON (up)
position.
3. Select the analog output channel to be calibrated by turning the Channel
Select rotary switch to 1 through 8.
4. Use a configured APO Data Block or Control Block in manual mode,
with its high range set to 100 and its low range set to 0; set the analog
output value to 0%.
5. To select bias calibration move the Span/Zero switch to the zero (down)
position.
6. Push the Raise pushbutton or Lower pushbutton to calibrate the bias.
Note that zero calibration is different for two- and three-wire modes. For
three-wire mode, zero is calibrated by increasing off of zero and then
calibrating it to zero by decreasing it. In three-wire mode, it takes
approximately 40 seconds to get the channel off of zero
7. When the correct bias has been established, select span calibration by
moving the Span/Zero switch to the Span (up) position.
Valmet 278566 13
Analog Output Module Preparation and Adjustment
8. Through the same configured APO Data Block or Control Block in
manual mode, set the analog output value to 100%.
9. Push the Raise pushbutton or Lower pushbutton to calibrate the span.
10. Repeat steps 1 through 10 for another analog output channel.
11. Once the channel(s) have been calibrated, move the Calibration switch to
the OFF (down) position. This will save the spans and biases of all 8
analog output channels in calibration memory for power down storage.
At this point, the Analog Output module is back in normal mode.
Specifications
Type 4-20 mA, 0-16 mA, 0-20 mA current
outputs.
Resolution 15 bits, digitally calibrated.
Modularity 8 individually isolated, two-wire or
three-wire channels. Module 080403
indivi-dually 3AG-fused on (+) side.
Module 080424 protected with PTC
resistor on (+) side.
Calibration Factory calibrated for 4-20 mA, three-
wire connection. May be field cali-
brated with precision drop-coil, volt-
meter/ammeter.
Current Loop Supply Voltage +42.4 Volts maximum.
Load Resistance 0 Ohms minimum/900 Ohms maxi-
mum @24 Volts minimum. Exceeds
ISA S50.1 specifications, class 2U
and 3U. (load = 300 to 800 Ohms,
supply voltage = 23.0 to 32.7 Volts).
Card Environment 0 to 60 deg. C, 0 to 90% RH non-
condensing
Reference Accuracy @25 deg. C, 40% RH: ±0.l% of
reading ±0.05% full scale
Temperature Effects 0.003% FS/degree C + 0.006% read-
ing/degree C
Current Loop Supply Voltage Effects 0.007% FS/Volt
14 Valmet 278566
Analog Output Module Preparation and Adjustment
Loop Resistance Effects 0.020% FS/100 Ohms
Long-term Drift 0.006% reading/1,000 hours
Maximum Common Mode Voltage 150 Vdc or peak ac
Transient Protection IEEE 472-1974
Module Load at 24 Vdc 150 mA
Valmet 278566 15
Valmet 278566
