Allen Bradley 1771-ODZ 8-Point Isolated AC Output Module

Product Overview

The Allen-Bradley 1771-ODZ is an 8-point isolated AC output module for the PLC-5 platform. It provides four sets of two isolated 120 V AC outputs rated at 2 A each, designed for controlling multiple solenoids, transformers, and other AC loads with isolated circuit pairs.

Technical Specs

• Outputs: 8 (4 sets of 2), isolated circuit pairs
• Voltage category: 120 V AC
• Operating voltage: 92-138 V AC
• Max continuous current: 2 A per output, 6 A per module
• Backplane current: 350 mA
• Wiring arm: 1771-WD
• Signal delay: On 20 ms (±6 ms), Off 20 ms (±6 ms)

Key Features

• Isolated circuit pairs prevent cross-talk between output groups
• Replaces 1771-OZ and 1771-OA with resistor for interlock applications
• 2 A per point supports solenoids and small transformers directly
• Fused outputs protect against shorted triacs

FAQ

• What does the Z in ODZ indicate? It designates isolated circuit pairs, replacing the older OZ contact module in interlock applications.
• Which wiring arm does it use? The 1771-WD 12-terminal wiring arm.
• Can it drive motors? It is designed for solenoids, transformers, and similar loads up to 2 A per point; use contactors for higher currents.

Installation Guide

1. Power down the 1771 chassis.
2. Insert the module into any slot except the leftmost.
3. Attach the 1771-WD wiring arm and wire AC loads.
4. Configure the chassis for 1-slot addressing.
5. Apply power and test each output pair for proper switching.

Selection Tips

• Select 1771-ODZ when isolated output pairs are required for interlocked loads.
• For individually isolated 16-point outputs, choose the 1771-OD16.
• Verify per-point load current does not exceed 2 A continuous.