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Lenze · I/O system 1000 · Reference Manual · DMS 5.0 EN · 09/2016 · TD17
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2
Product description
2.5
Analog I/O EPM-S404 – 4(2) analog inputs for resistance measurement
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2.5
Analog I/O EPM-S404 – 4(2) analog inputs for resistance measurement
Connections
2-, 3-, 4-wire conductor measurement
The terminal assignment indicates how to connect your sensors in case of a 2, 3 or 4-wire conductor
measurement.
• You can use all channels to carry out a 2-wire conductor measurement.
• A three-wire conductor measurement is only possible at the channels 1 and 2.
• Please note that in case of a three-wire conductor measurement you always deactivate the
correspondent channel by parameterisation. The correspondent channel of channel 1 is
channel 3 and the one of channel 2 is channel 4.
• Deactivate unused channels by parameterisation.
• A 4-wire conductor measurement is only possible at the channels 1 and 2.
• The measuring current for channel 1 is output on the pins 1 and 2. The measurement for
channel 1 takes place at the pins 3 and 4. The analog value for channel 1 is displayed in the
input word 0.
• The measuring current for channel 2 is output on the pins 5 and 6. The measurement for
channel 2 takes place at the pins 7 and 8. The analog value for channel 2 is displayed in the
input word 1.
• Please note that in case of a four-wire conductor measurement you always deactivate the
correspondent channel by parameterisation. The correspondent channel of channel 1 is
channel 3 and the one of channel 2 is channel 4. Unused
• Deactivate unused channels by parameterisation.
Module/spring pressure terminals
View
Name
Description
Terminal data
SLIO002
1
Analog input AI1 (+)
2
Analog input AI1 (GND)
3
Analog input AI3 (+)
4
Analog input AI3 (GND)
5
Analog input AI2 (+)
6
Analog input AI2 (GND)
7
Analog input AI4 (+)
8
Analog input AI4 (GND)
Note!
Use parameter setting to deactivate unused inputs.
If thermal detectors are connected in a 3 or 4 conductor setup, channels 3 and/or 4 must
be deactivated.
The module does not provide any auxiliary supply for sensors.
2
6
3
7
4
8
1
5
1
5
4
8