Installation instructions, 4general information and specifications, Isolated-circuit discrete input and output modules – Spectrum Controls 1746sc-OAP8I User Manual

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Installation Instructions

Isolated-Circuit
Discrete Input and Output Modules

General Information And Specifications

This module is designed exclusively to mount Allen-Bradley 1746 I/O racks
for use with Allen-Bradley SLC500 fixed and modular systems. The 1746sc-
IA8I, IB8I, -IC8I, and -IM8I feature 8 isolated-circuit inputs, each with its
own common. These modules also feature broad operating ranges for in-
creased versatility. They are designed for use with a wide variety of input
devices, such as limit switches, float switches, selector switches, push-
buttons, and proximity switches (photo-sensors). They can even monitor
relay or motor starter outputs directly.

The 1746sc-OAP8I provides 8, triac-controlled, isolated-circuit outputs,
each with its own common. The module also provides a broad operating
range for increased versatility. It is designed for use with high inductive
loads, such as solenoids, relays, and motor starters. Unlike relay outputs,
triac outputs do not require back-EMF surge suppression for many inductive
loads. A triac output module is also a good replacement for a relay output
module when solid-state speed and reliability are desired.

General Specifications-- 1746sc Series

Isolation Voltage

1500 Vac point-to-point

1500 Vac field wiring-to-backplane

Environmental Conditions
Operational Temperature

to 60

C (32

to 140

Storage Temperature

-40

to +85

C ( -40

to 185

Relative Humidity

5 to 95% (non-condensing)

Certifications

UL/C-UL (Class I, Div 2, Groups ABCD)

CE per Council Directives 89/336/EEC for EMC

and 73/23/EEC for Low Voltage

Conductors Wire Size

14 gage stranded maximum

3/64 inch insulation maximum