Machine Monitoring Systems

MMS 6410
Dual Channel Measuring Amplifier for
Inductive Displacement Sensors

● Part of the MMS 6000

machine monitoring system
● For connection of inductive
displacement sensors for
measuring the absolute
expansion, e.g. epro sensors
PR 9350/.
● Signal frequency range up to
100 Hz
● Zero adjustment and zero
shift independently from the
chosen measuring range
● Measuring results of both
channels to be combined
with each other e.g. for
calculation of sum and
difference values
● Sensor supply balanced to
ground to suppress
disturbances in industrial
environments
● RS 232 interface for
configuration and reading
out measuring results
● RS 485 interface for
connection to epro's MMS
6800 analysis and diagnosis
system or to host computers

Applications:
The MMS 6410 dual channel measuring mits measurement of static as well as of Such cards of the MMS 6000 family are
amplifier measures shaft displacements dynamic signals such as displacements, suitable to build up systems for
with the help of inductive transducers in angles, forces, torsions or any other increasing performance, efficiency and
half- or full bridge configuration or with physical quantities, that can be safety of operation and to extend the
the help of differential transformers. measured with inductive transducers. machines' life times. Application fields of
Each measuring channel may operate Measurements of displacements serve the epro measuring amplifiers are
separately or calculate sum or difference the construction of turbine protection steam, gas and water turbines,
values of the measuring results of both systems. They provide signals for compressors, fans, centrifuges and
channels analysis and diagnosis systems to be other turbo machinery.
The MMS 6410 measuring amplifier per- further processed in field bus systems
and networks.
 Machine Monitoring Systems

Technical data:
Sensor inputs: Measuring range displacement Optocoupler mode:
Two independent inputs for inductive measurement: "Pre-alarm (ALERT)", open circuit or
sensor in half- or full bridge configu- Depending on transducer measuring closed circuit mode
ration and for differential transformers. range; one or both outputs may be "Main alarm (DANGER)", open circuit
The signal inputs are differential inputs, inverted. or closed circuit mode
galvanically isolated from the system Channel or module inhibit
supply, open circuit and short circuit Sensor supply:
proof. Each input includes a separate, buffered Limit value multiplier for changing alarm
output to supply inductive sensors. limits during run-up and run-down of the
Max. input voltage: machine. The multiplier is adjustable in
3.6 V Carrier frequency: the range:
(protected against over voltages) 4.75 kHz 1.000....4.999
Nominal supply voltage: 24 V logic
Nominal input voltage range: 4 Vrms Input resistance:
2.5V rms Permissible load: > 10 kOhm
Input impedance: 120....600 Ohm
200 kOhm The outputs are balanced to ground, Key pulse input:
open-circuit and short-circuit proof. 1 pulse per revolution for analysis
Measuring ranges: purposes of the system:
Measuring frequency range: Control inputs: 24 V logic
0....100 Hz -3dB Common logical binary inputs for the Input resistance:
two channels. > 30 kOhm
Pulse duration:
min. 10µs (edge-triggered)

Measuring modes:
General: Measuring modes for the dual channel
Each channel has to be configured indi- mode:
vidually via the available interfaces. The - Expansion measurement
configuration may be changed any time
during operation.

Programmable measuring parameters:

- Measuring range - Warning and alarm limits - Channel identification by means of
- Measuring unit - Combination of channels KKS numbers or freely selectable
- Transducer sensitivity - Hysteresis designations

Limit supervision:
There are 2 alarm limits for each Adjustment range limit values: Switching hysteresis:
channel, adjustable independently from 5....100% of f.s.d configurable
each other. Supervision of the limit (only at falling signal levels)
values may be disabled with an external Resolution and reproducibility:
digital signal or via the Channel-Clear 1‰ of f.s.d Outputs:
function in case of a module error. via potential-free optocoupler outputs at
Delay time: the rear connector
Having loaded a new parameter configu- 0-1-2-3-4-5 sec. adjustable
ration to the module, the alarm outputs Umax = 48 V DC
remain blocked for a delay time of 15 Switching characteristics: Imax = 100 mA
sec. rising signal level
 Machine Monitoring Systems

Module and sensor supervision:

The internal module supervision - Operating temperature of the The states for both channels are output
comprises the following functions: module to the connecting strip at the rear via
- Transducer signal within a - System watchdog optocouplers for the purpose of galva-
predefined good range During the change from the error to the nical isolation
- Wiring between transducer and ok-state and after power-on of the
module (short-circuit, interruption) module, all functions of the module are Umax = 48 V DC
- System supply voltage within blocked for a delay time of 15s (alarm Imax = 100 mA
predefined limits enable after a delay time of 60s).
- Configuration and parameter A green LED on the module front indi- Reasons for module disturbances can
setting OK cates the "Channel clear" state. During be read out in detail via the commu-
- Measuring values within measuring an error state, this LED is switched off, nication interface. This permits the
range during the delay period it flashes. technicians to remove the reason for the
fault immediately.

Signal outputs at the connecting strip:

Connecting strip: One voltage output per channel, One voltage output per channel,
according to type F48M, DIN41612 proportional to chosen variable and proportional to the sensor signal.
Communication interface RS485 measuring range. Nominal range:
One current output per channel, pro- Nominal range: 0...12 Vpp
portional to measuring range and 0...+10 V open circuit and short-circuit proof
chosen variable. open circuit and short-circuit proof Load resistance:
Nominal range: Load resistance: ≥100 kOhm
0/4...20 mA ≥10 kOhm Frequency range:
open circuit and short-circuit proof Resolution: 0 Hz...20 kHz (±20 % -3 dB)
Permissible burden: 8 Bit Accuracy:
≤500 Ohm Accuracy: ±1 % of f.s.d
Resolution: ±1 % of f.s.d
16 Bit
Accuracy:
±1% of f.s.d.

Operating elements at the module front:

Two sensor signal outputs, indepen- Frequency range: 1 Mini DIN diode socket:
dently from each other, one for each dynamic carrier frequency output with RS232 interface for connection of a
channel: superimposed displacement signal. computer for configuration and data
interchange with the module.
The signals are proportional to the 2 green LED´s:
sensor signals and can be tapped at the indicate "Channel Clear" separately Handle:
SMB sockets on the module front. for channel 1 and channel 2. To pull out and insert the module and
for labelling purposes.
Range: ± 12 V 4 red LED´s:
Load resistance: 100 kOhm indicate pre and main alarm
Internal resistance: 1 kOhm separately for both channels.

Power supply: System design:

Redundant supply input via two supply Power consumption: At standalone operation, unlimited
inputs, decoupled via diodes. At least max. 8 W (max. 300 mA at 24 V) number of modules.
one supply input is required for the
supply of the module. Other supply voltages can be realized Max. 31 modules / 62 channels may be
with additional system power supplies. operated at one RS 485 bus
Supply voltage:
18....24....31.2 V DC If more modules / channels are
according to IEC 654-2, class necessary, e.g. with an MMS 6815,
DC4 another RS 485 bus must be installed.

Environmental conditions:
Protection class: Permissible relative humidity: Permissible shock:
Module: IP 00 according to DIN 40050 5....95%, non condensing according to IEC 68-2, part 29
Front plate: IP21 according to DIN peak value of acceleration:
40050 Permissible vibration: 98 m/s2
according to IEC 68-2, part 6 nominal shock duration:
Climate conditions: Vibration amplitude: 16 ms
according to DIN 40040 class KTF 0.15 mm in range 10...55 Hz
operating temperature range: EMC resistance:
0....+65°C Vibration acceleration: according to EN50081-1 / EN50082-2
Temperature range for storage and 16.6 m/s2 in range 55...150Hz
transport:
-30....+85°C
 Machine Monitoring Systems

Dimensions:
PCB/EURO card format acc. to
DIN 41494 (100 x 160 mm)
Width: 30,0 mm (6 TE)
Height: 128,4 mm (3 HE)
Length: 160,0 mm
Net weight: app. 320 g
Gross weight: app. 450 g
incl. standard export packing
Packing volume: app. 2,5 dm3
Space requirements:
14 modules (28 channels) fit into each
19“ rack

Fig. 1
Alle Maße in mm
All dimensions in mm

Requirements on configuration PC:

Configuration of modules is made via Processor: Capacity of fixed disk:
the RS 232 interface on the module front 486 DX, 33 MHz min. 5 MB
or via the RS 485 bus by means of a Interfaces: Required working memory:
computer (laptop) with the following one free RS 232 interface (COM 1 min. 620 KB
minimum specifications: or COM 2) with FIFO type 156550 Operating system:
UART MS DOS Version 6.22 or higher or
WIN® 95/98 or NT 4.0

Connection diagram:
+24V/1
+24V/2
0V (24V)
b02 z02 d02
b14 GND U- UN+ UB+ A d04
b16 GND B z04 RS 485
FAKTOR X d18 FX BP b04 BUS
ALARM STOP z22 ES EO1 z16 OUTPUT CH1/CH2 FOR
+
EXT. SPERREN b22 GND DISPLAYING OR OPERATION
GND b12 -
HARTING d22 d22 KEY (IN) AUSGANG K1/K2 FÜR
EO2 d16 + ANZEIGE ODER VERKNÜPFUNG
CONNECTOR
MMS
d12 GND b24
Sync. IN
SYNC I-1 6410
d14 SYNC I-2
z12 SYNC O-1 I1+ z18
+
Sync. OUT z14 SYNC O-2 I1- b18 Iout CH1 / Iout K1
-
I2+ z20
B1
+
I2- b20 Iout CH2 / Iout K2
w -
SC-A d24 ALERT RELAIS IN QUIESCENT CURRENT
ALERT RELAIS IN RUHESTROM

Printed in Germany. Due to continued research and product development

A z06 CF1-1 SC-D z24
DANGER RELAIS IN QUIESCENT CURRENT
B z10 AIN1+ DANGER RELAIS IN RUHESTROM
C b06 CF1-2 A1-C b26 ALERT 1

epro reserves the right to change these specifications without notice.

z08 AIN1- ALERT 1
A1-E b28
D1-C d26 DANGER 1
PR 9350/.. DANGER 1 D1-E d28
A2-C b30 ALERT 2
B2 ALERT 2 A2-E b32
w
D2-C d30 DANGER 2
A d06 CF2-1 DANGER 2 D2-E d32
B d10 AIN2+ z26 CHANNEL CLEAR 1
CHANNEL C1-C
b08 CF2-2 z28
C
CLEAR 1 C1-E
d08 AIN2- z30 CHANNEL CLEAR 2
CHANNEL C2-C
z32
CLEAR 2 C2-E
PR 9350/.. Fig. 1 Connection diagramm with PR 9350/..
Anschlußschema mit PR 9350/..

Order number:
MMS 6640 Dual Channel Measuring Amplifier for Inductive Sensors ............................................................... 9100 – 00005
6010 – 00032 01/03 Reh

MMS 6910 Operating accessories ..................................................................................................................... 9510 – 00001

consisting of: operating and installation manual, configuration software and various connection cables

The F48M mating connector has to be ordered separately depending on the intended wiring technology.

© epro GmbH
Jöbkesweg 3 D-48599 Gronau Further Information:
Tel. +49 (0) 2562/709-245 Internet: www.epro.de
Fax +49 (0) 2562/709-255 E-Mail: info@epro.de