Field Wiring Guidelines

Overview

This section contains wiring guidelines and precautions.

Required 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

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.

Mapping terminal blocks are described in the table below.

Row	Terminal No.	Description	Function
2	1, 3, 5, 7, 9,11, 13, 15	InU1 ... InU8	Voltage input, channel 1 ... 8
	2, 4, 6, 8, 10, 12, 14, 16	InI1 ... InI8	Current input, channel 1 ... 8
	17	M-	- return (of operating voltage)
	18	L+	+ 24 VDC Operating voltage
3	1, 3, 5, 7, 9,11, 13, 15	Agnd1 ... Agnd8	Analog ground, channel 1 ... 8
3	2, 4, 6, 8, 10, 12, 14, 16	Inl1 ... Inl8	Current input, channel 1 ... 8

Signal Protection

To protect the signal from external noise induced in serial or common mode, we recommend the following precautions.

Use shielded twisted-pair cables with a minimum conductor size of 24 AWG or 0.22 mm2.
Connect the cable shield to ground via the cable grounding rail (part number CER 001).
You may combine the analog inputs on this I/O base in one multi-pair cable provided the same ground is used.
When wiring the voltage supply, use sensors that do not have ground reference.