Field Wiring Guidelines

Overview

Inputs are field wired to row 2 of the base. 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

Busbar May Be Required

Depending on the type of field devices you are using, you may need a 1-row busbar. The following busbars are available from Schneider Electric.

Type	Part Number
Screw-in	170 XTS 006 01
Spring-clip	170 XTS 007 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	Fuse 1, Fuse 2	Output fuses
2	1 ... 8	Outputs for group 1
	9 ... 16	Outputs for group 2
	17	Neutral for outputs (1N)
	18	Line for inputs (1L1)
3	1 ... 16	Neutral for individual outputs (1N)
	17	Neutral for module (N)
	18	Line 120 VAC for module (L1)
4	1 ... 18	Protective earth (PE)

Protective Circuit 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 prallel to the operating coil.