Field Wiring Guidelines
Original instructions
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Overview
Inputs are field wired to row 1 of the base. The outputs are field wired to row 2. 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 Automation sells terminal connectors in sets of three.
Type
Part Number
Screw-in
170 XTS 001 00
Spring-clip
170 XTS 002 00
Busbar May Be Required
Depending on the type of field devices you are using, you may need a 1-, 2-, or 3- row busbar. The following busbars are available from Schneider Automation.
Type
Number of Rows
Part Number
Screw-in
1 - row
170 XTS 006 01
2 - row
170 XTS 005 01
3 - row
170 XTS 004 01
Spring-clip
1 - row
170 XTS 007 01
2 - row
170 XTS 008 01
3 - row
170 XTS 003 01
Mapping Terminal Blocks
CAUTION
POTENTIAL FOR SHORT CIRCUITS AND/OR POWER-UP SPIKES
Provide external fuses on the operating voltage to protect the module. Appropriate fuse values are shown in the wiring illustration. An unprotected module may be subject to short circuits and/or power-up spikes.
Failure to follow these instructions can result in injury or equipment damage.
The following table shows mapping terminal blocks and optional busbars.
Row
Terminal
Function
1
1 through 16
Inputs 1 through 16
1
17
Power supply return for module (M-)
1
18
+10 to 60 VDC power for module (L+
2
1 through 16
Outputs 1 through 16
2
17
Power supply return for outputs (1M-)
2
18
+10 to 60 VDC power for outputs (1L+)
3
1 through 16
Return connections for outputs
3
17
Power supply return for input voltage reference (2M-)
3
18
+10 to 60 VDC input reference voltage (2L+)
4
1 through 18
Input voltage for I1...I16 or PE
5
1 through 18
Return (M-)
6
1 through 18
Protective Earth (PE)
Protective Circuit May Be Required
When contacted switches are used on the input lines or when lines to the peripherals are very long, the outputs of inductive loads require protective circuitry with a clamping/suppressor diode. Install the protective circuit parallel to the operating coil.