Allen-Bradley 1756-OA8D AC Output Module

Series#: AllenBradley

Product Details

1756-OA8D Allen-Bradley ControlLogix AC Output Module – 8-point, isolated, 120/240V AC.
Each output channel individually isolated (1000V RMS) for maximum system integrity and fault tolerance.
Supports 120V AC to 240V AC operation with 2A per point (8A total per module) for heavy industrial loads.
Built-in diagnostic LED indicators and electronic fuse protection for real-time status monitoring.
Directly compatible with 1756 ControlLogix backplane – plug-and-play integration in existing chassis.
Rugged industrial design rated for -20°C to +70°C operation, ideal for harsh factory floor environments.
Guaranteed 100% Original factory condition, offering fast and secure worldwide delivery.

Specification

The Allen-Bradley 1756-OA8D is a high-performance 8-point AC output module designed for the ControlLogix platform, providing robust and isolated switching for 120/240V AC loads. Each channel is individually optically isolated (1000V RMS) to protect the backplane and logic circuits from electrical noise or ground loops, making it ideal for motor starters, solenoids, and contactors in discrete manufacturing and process control. The module features electronic short-circuit protection with thermal shutdown, and its 2A per point rating ensures reliable operation for medium-current AC applications. Factory-tested to Rockwell’s stringent quality standards, the 1756-OA8D offers seamless integration with ControlLogix processors via the 1756 backplane, supporting both scheduled and unscheduled data transfers. With a wide operating temperature range and conformal coating options for harsh environments, this module is a trusted choice for global automation systems.

Parameter	Specification
Product Series	Allen-Bradley ControlLogix 1756
Model	1756-OA8D
Type	AC Output Module
Number of Outputs	8 (individually isolated)
Output Voltage Range	85-264V AC (rated 120/240V AC)
Output Current per Point	2A continuous at 240V AC
Total Output Current per Module	8A (derated per temperature)
Isolation Voltage	1000V RMS (channel-to-backplane)
On-State Voltage Drop	< 1.5V at rated current
Off-State Leakage Current	< 1 mA
Switching Frequency	10 Hz maximum (resistive load)
Protection	Electronic short-circuit protection, thermal shutdown
Diagnostics	LED indicators per channel (On/Off/Fault), backplane status
Backplane Current Consumption	5V DC: 300 mA, 24V DC: 200 mA
Power Dissipation	4.5W typical at full load
Operating Temperature	-20°C to +70°C (non-condensing)
Storage Temperature	-40°C to +85°C
Humidity	5% to 95% non-condensing
Vibration Resistance	2 g Standard Models 10-500 Hz (operating)
Shock Resistance	30 g (operating)
Terminal Type	Removable screw terminal block (1756-TBNH or 1756-TBCH)
Wiring	14-22 AWG (copper only)
Dimensions (H x W x D)	144 mm x 35 mm x 117 mm (5.67 x 1.38 x 4.61 in)
Weight	0.35 kg (0.77 lb)
Certifications	UL Listed, CSA, CE, ATEX Zone 2 (with appropriate enclosure)
Key Features	Individual channel isolation, electronic fuse, diagnostic LEDs