The 1756-OB16 ControlLogix Digital DC Output Module from Rockwell Automation is a high-reliability 16-point 24V DC sourcing output module designed for fast and precise discrete control in industrial automation systems.
It is widely used to drive solenoids, relays, indicator lights, small actuators, and interface devices in manufacturing lines, packaging systems, material handling equipment, and process automation environments. With strong electrical performance and tight integration into the ControlLogix platform, it delivers stable and scalable DC output control for modern industrial applications.
This module is part of the core ControlLogix I/O family and is commonly selected for general-purpose high-density DC switching applications.
Technical Specifications (Including Size & Weight)
| Parameter | Specification |
|---|---|
| Model | 1756-OB16 |
| Series | ControlLogix Digital Output Modules |
| Module Type | 16-Point DC Sourcing Output Module |
| Number of Outputs | 16 outputs |
| Output Voltage Range | 10–31.2V DC |
| Nominal Voltage | 24V DC |
| Output Type | Transistor (sourcing) |
| Output Configuration | Grouped outputs (2 groups) |
| Continuous Current per Point | 1.0 A |
| Continuous Current per Module | 8 A |
| Signal Delay | ~0.7–1 ms switching time |
| Short-Circuit Protection | Electronic protection (model dependent) |
| Leakage Current (Off-state) | Very low (µA range) |
| Isolation Voltage | 250V continuous |
| Backplane Current (5.1V DC) | ~150–200 mA |
| Power Dissipation | ~5 W |
| Terminal Block | 1756-TBSH / 1756-TBNH |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5%–95% non-condensing |
| Weight | ~0.30–0.40 kg |
Physical Dimensions
- Size (H × W × D): 145 × 35 × 140 mm
The standard single-slot ControlLogix form factor allows dense installation while maintaining efficient thermal and electrical performance.
Recommended Related Models
The 1756-OB16 is commonly used with:
- 1756-IB16 digital input module
- 1756-OA16 AC output module
- 1756-OA8 / OA8E AC output modules
- 1756-OW16 relay output module
- 1756-L71 / L73 ControlLogix CPUs
- 1756-EN2T EtherNet/IP communication modules
Popular Allen-Bradley ControlLogix Output Modules
Within the ControlLogix output family, widely used models include:
- 1756-OB16 DC output module
- 1756-OB8 smaller DC output variant
- 1756-OA16 AC output module
- 1756-OA16I isolated AC output module
- 1756-OW16 relay output module
These modules enable flexible design of industrial control systems with mixed output requirements.
