Allen-Bradley 1746-OB32 SLC 500 Digital DC Output Module

Overview
The 1746-OB32 is a high-density Digital DC Output Module designed for the Allen-Bradley SLC 500 system. It features thirty-two (32) 24 VDC output channels, organized into two (2) input groups with sixteen (16) points per group. This module is compatible with both fixed and modular SLC 500 hardware, providing reliable digital output performance in industrial applications.

Key Features

• Manufacturer: Rockwell Automation

• Brand: Allen-Bradley

• Part Number/Catalog No.: 1746-OB32

• Series: SLC 500

• Module Type: Digital DC Output Module

• Outputs: 32 channels

• Voltage Range: 5–50 VDC

• Current per Output: 0.25–0.5 A

• Current per Module: 8 A

• Points per Common: 16

• Backplane Current (5 V): 190 mA

• Nominal Output: 24 VDC

• Step Response: 60 ms ON, 2.5 ms OFF

• Signal Delay: 0.1 ms ON, 1 ms OFF

• Electronic Protection: None

• Applications: High current DC output applications

• UPC: 10662468092903

• UNSPSC: 32151705

Description
The 1746-OB32 provides a 32-channel high-density digital output for SLC 500 systems. Each output point can deliver 24 VDC with a sourcing voltage range of 5–50 VDC. The module draws 0.19 A of backplane current at 5 VDC and offers output circuit isolation tested at 1500 V AC for 1 minute.

The maximum ON-state signal delay is 0.1 ms, and the OFF-state delay is 1 ms. Each output supports a nominal current of 0.25 A at 0–60 °C, with a minimum load of 1 mA. Surge capability is 1.0 A for 1 ms, repeatable every 2 seconds. Total module heat dissipation is 6.45 W, with 0.172 W per point.

The 1746-OB32 is rated for an operating temperature of 0–60 °C (32–140 °F) and relative humidity of 5–95% non-condensing. It withstands operating shock of 30 G and vibration of 2.5 G at 10–200 Hz. The module is C-UL and UL Listed for Industrial Control Equipment, suitable for Class I, Division 2, Groups A, B, C, D hazardous locations, and complies with NEMA ICS 2-230 noise immunity standards.