The 1756-OB16IEF ControlLogix DC Output Module from Rockwell Automation is a high-speed 16-point fast isolated 10–30V DC output module designed for advanced industrial automation systems requiring ultra-fast response, peer-to-peer synchronization, and precise pulse/PWM control.
It belongs to the next-generation ControlLogix I/O family and is engineered for applications where traditional digital outputs are not fast enough, such as high-speed packaging, motion-adjacent signaling, test systems, and precision machine timing control. With its extremely short switching time and enhanced communication capability, the 1756-OB16IEF delivers superior responsiveness and control accuracy in demanding environments.
Technical Specifications (Including Size & Weight)
| Parameter | Specification |
|---|---|
| Model | 1756-OB16IEF |
| Series | ControlLogix Fast Digital Output Modules |
| Module Type | 16-Point Fast Isolated DC Output Module |
| Number of Outputs | 16 outputs |
| Output Voltage Range | 10–30V DC |
| Nominal Voltage | 12/24V DC |
| Output Type | Fast transistor, sourcing/sinking capable |
| Output Technology | High-speed PWM / peer-to-peer control |
| Switching Time | ~15 µs nominal (ultra-fast response) |
| Output Current | Up to 1–2 A per point (derated by temperature) |
| Module Current Capacity | Up to 8 A total (derated at higher temperature) |
| Isolation Voltage | 250V continuous |
| Backplane Current (5.1V DC) | ~350 mA |
| Power Dissipation | ~3–4 W |
| Control Features | Fault mode, PWM, high-speed synchronization |
| Field Power Requirement | External 24V DC supply |
| Terminal Block | 1756-TBCH / 1756-TBS6H |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5%–95% non-condensing |
| Weight | ~0.30–0.45 kg |
Physical Dimensions
- Size (H × W × D): 145 × 35 × 140 mm
Despite its advanced high-speed electronics, the module maintains the standard ControlLogix single-slot form factor for easy system integration.
Recommended Related Models
The 1756-OB16IEF is commonly used with:
- 1756-OB16E electronically fused DC output module
- 1756-OB16 standard DC output module
- 1756-OB16D diagnostic DC output module
- 1756-IB16 digital input module
- 1756-L71 / L73 ControlLogix CPUs
- 1756-EN2T EtherNet/IP communication modules
Popular Allen-Bradley High-Speed Output Modules
Within the ControlLogix ecosystem, commonly used performance-oriented modules include:
- 1756-OB16IEF ultra-fast DC output module
- 1756-OB16E electronically fused DC output module
- 1756-OB16 standard DC output module
- 1756-OA16 AC output module
- 1756-OW16 relay output module
These modules serve different levels of speed, protection, and load type flexibility.
