Allen-Bradley 1756-OB8 Digital Output Module

Series#: AllenBradley

Product Details

1756-OB8 – Allen-Bradley ControlLogix Digital Output Module with 8-Point Discrete Control
8-channel, 24V DC sourcing output module for high-speed industrial automation applications
Supports 2.0A per point and 8.0A per module, ensuring robust load handling for actuators and relays
Hot-swappable design for minimal downtime in critical ControlLogix chassis systems
High-density output configuration with diagnostic indicators for real-time status monitoring
Compatible with 1756 ControlLogix backplane, providing seamless integration into existing architectures
100% Brand New & Original, securely packed and ready for reliable global shipping.

Specification

The 1756-OB8 is a high-performance digital output module from Allen-Bradley’s ControlLogix family, engineered for precise and reliable discrete control in demanding industrial environments. This module offers eight sourcing outputs at 24V DC, each capable of delivering up to 2.0 amps, with a total module capacity of 8.0 amps. Designed for seamless integration into ControlLogix backplanes, the 1756-OB8 supports hot-swapping, reducing system downtime during maintenance or expansion. Its robust construction and diagnostic LED indicators provide immediate visual feedback on output status, making it ideal for applications in manufacturing, process control, and material handling systems. Whether driving solenoid valves, motor starters, or indicator lights, this module ensures consistent performance and long service life.

Parameter	Specification
Product Type	Digital Output Module
Series	ControlLogix
Model Number	1756-OB8
Number of Outputs	8 Points
Output Type	Sourcing (PNP) – 24V DC
Output Current per Point	2.0 A (continuous)
Output Current per Module	8.0 A (continuous)
Supply Voltage	24V DC nominal (10-30V DC range)
Isolation Voltage	50V DC (backplane to output)
Backplane Current Draw	100 mA Standard Models 5.1V DC
Power Dissipation	2.5 W typical
Thermal Dissipation	8.5 BTU/hr typical
Response Time (Off to On)	100 µs typical
Response Time (On to Off)	100 µs typical
Indicators	Green LED per output (status), Red LED (fault)
Connector Type	Removable terminal block (16-pin, spring clamp or screw type)
Operating Temperature	0°C to +60°C (32°F to +140°F)
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
Shock Resistance	30 g
Certifications	CE, UL, CSA, ATEX (Zone 2), IECEx
Mounting	ControlLogix chassis (1756-A series)
Weight	Approx. 0.25 kg (0.55 lb)
Dimensions (H x W x D)	144 mm x 35 mm x 105 mm (5.67 in x 1.38 in x 4.13 in)