Allen-Bradley 1756-OB32 Digital Output Module

Series#: AllenBradley

Product Details

1756-OB32 Allen-Bradley ControlLogix Digital DC Output Module – 32 points, 24V DC sink/source.
High-density design reduces panel space and simplifies wiring in large-scale automation systems.
Electrically isolated outputs with individual point-level diagnostics for enhanced fault detection.
Compatible with Allen-Bradley ControlLogix chassis and 1756 backplanes for seamless integration.
Robust industrial-grade construction rated for extended temperature ranges and harsh environments.
Hot-swappable capability minimizes downtime during maintenance or system upgrades.
100% Genuine and New, rigorously inspected before international dispatch.

Specification

The 1756-OB32 is a high-performance digital DC output module from the Allen-Bradley ControlLogix family, engineered to deliver reliable and precise control in demanding industrial automation applications. This 32-point module operates at 24V DC with sink/source output logic, providing exceptional density to optimize panel layout and reduce wiring complexity. It features individual point-level diagnostics, short-circuit protection, and electrical isolation, ensuring robust operation in environments prone to electrical noise or voltage transients. Designed for hot-swapping in ControlLogix chassis, the 1756-OB32 supports seamless system expansion and maintenance without disrupting critical processes. Each output is rated for 0.5A continuous current, with a total module current capacity of 8A at 60°C, making it ideal for driving solenoids, relays, indicators, and other discrete actuators in manufacturing, oil and gas, or water treatment systems.

Parameter	Specification
Product Type	Digital DC Output Module
Model Number	1756-OB32
Number of Outputs	32 (sink/source configurable)
Output Voltage	24V DC nominal (18-30V DC range)
Output Current per Point	0.5A continuous (resistive load)
Total Module Current	8A at 60°C (derate linearly to 6A at 70°C)
Output Type	Solid-state, isolated per bank of 8 points
Isolation Voltage	1500V AC between output banks and backplane
Response Time	Off to On: 0.1 ms typical; On to Off: 0.5 ms typical
Diagnostics	Open wire, short circuit, and over-temperature per point
Backplane Current	300 mA at 5.1V DC (maximum)
Operating Temperature	0°C to 60°C (32°F to 140°F) with horizontal mounting; derated for vertical mounting
Storage Temperature	-40°C to 85°C (-40°F to 185°F)
Relative Humidity	5% to 95% non-condensing
Vibration Resistance	5 g Standard Models 10-500 Hz per IEC 60068-2-6
Shock Resistance	30 g peak, 11 ms duration per IEC 60068-2-27
Enclosure Type	Open-style module (requires panel or enclosure for IP rating)
Keying	Electronic keying with ControlLogix backplane
LED Indicators	Green per point for output status; red for fault conditions
Dimensions (H x W x D)	144 mm x 35 mm x 121 mm (5.67 in x 1.38 in x 4.76 in)
Weight	Approximately 0.34 kg (0.75 lbs)
Compatibility	All ControlLogix chassis (1756-A4, A7, A10, A13, A17) and 1756 power supplies
Certifications	CE, CSA, UL, ATEX Zone 2 (when installed in appropriate enclosure)
Wiring	Removable 40-pin terminal block (1756-TBCH or 1756-TBS6H recommended)
Protection	Short-circuit protection per point; reverse polarity protection on module power