Field Wiring Guidelines
Original instructions
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Overview
This section contains wiring guidelines and precautions.
Terminal Connector
To connect field devices to the I/O base, you need a field wiring terminal connector. Schneider Electric sells terminal connectors in sets of three.
Type
Part Number
Screw-in
170 XTS 001 00
Spring-clip
170 XTS 002 00
Mapping Terminal Blocks
Mapping terminal blocks is described in the table below.
Row
Terminal No.
Description
Function
2
1, 5, 9, 13
IS1+,IS2+
IS3+,IS4+
+Current source output,
Channels 1 ... 4
2, 6, 10, 14
RTD1+, RTD2+
RTD4+, RTD4+
+RTD input,
Channels 1 ... 4
3, 7, 11, 15
RTD1-, RTD2-
RTD4-, RTD4-
-RTD input,
Channels 1 ... 4
4, 8, 12, 16
IS1-,IS2-
IS3-,IS4-
-Current source output,
Channels 1 ... 4
17
M-
- power supply return
18
L+
Module power supply + 24 V
3
1, 2, 5, 6, 9,10,13, 14
-
Not used
3, 7, 11, 15
InU1+,InU2+
InU3+,InU4+
+ thermocouple or voltage mode input, channels 1 ... 4
4, 8, 12, 16
InU1-,InU2-
InU-+,InU4-
- thermocouple or voltage mode input,
Channels 1 ... 4
17, 18
-
Not used
Signal Protection
To protect the signal from external noise induced in serial or common mode, we recommend the following precautions.
ThermocoupleMeasurement Precautions
For thermocouple measurements (except with thermocouple B), observe the following precautions to obtain the accuracies indicated in the performance tables.