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Allen-Bradley 1746-OB32 DC Output Module

1. Product Description

The 1746-OB32 is a 32-channel digital DC output module from Allen-Bradley’s SLC 500 series, designed for industrial automation applications. It provides sourcing-type outputs (10–30V DC) for controlling devices such as relays, solenoids, and indicators in PLC-based control systems .

2. Key Features

High-Density Outputs – 32 sourcing DC outputs, optimizing control cabinet space .
Wide Voltage Range – Supports 10–30V DC output signals, compatible with various industrial actuators .
Fast Response Time – ≤0.1ms turn-on delay and ≤1.0ms turn-off delay, suitable for high-speed control applications .
High Surge Capacity – Handles 4.0A surge current per channel (for 10ms), ensuring stable operation during power fluctuations .
LED Status Indicators – Provides per-channel output status for easy diagnostics .

3. Technical Specifications

Parameter	Specification
Output Type	32 sourcing DC outputs
Output Voltage	10–30V DC
Current per Channel	0.5A (continuous), 4.0A (surge for 10ms)
Module Total Current	16A (continuous), 128A (surge)
Power Consumption	7.6W
Isolation	Non-isolated (all 32 channels share a common group)
Operating Temp.	0°C to 60°C
Certifications	CE, UL, CSA

4. Applications

Manufacturing Automation – Machine control, conveyor systems, and robotic cells .
Process Control – Actuating valves and pumps in water treatment plants .
Material Handling – Packaging machinery and assembly line automation .

5. Installation & Precautions

Wiring Compliance – Use shielded cables to minimize electrical noise .
Load Matching – Avoid exceeding 0.5A per channel or 16A module total .
Chassis Compatibility – Install in 1746-series chassis (e.g., 1746-A4, 1746-A7) .