The 1756-OB16IS ControlLogix DC Output Module from Rockwell Automation is a high-performance 16-point individually isolated 10–30V DC output module designed for advanced industrial automation systems requiring precision output timing, scheduled control, and strong electrical isolation.
This module is part of the ControlLogix scheduled I/O family, meaning it supports tightly synchronized output behavior in systems where deterministic timing is critical. It is widely used in high-end manufacturing lines, coordinated motion systems, packaging machines, and process automation applications where output timing accuracy and system-level synchronization are essential.
With its isolated architecture and scheduled execution capability, the 1756-OB16IS provides a higher level of control than standard DC output modules.
Technical Specifications (Including Size & Weight)
| Parameter | Specification |
|---|---|
| Model | 1756-OB16IS |
| Series | ControlLogix Scheduled Output Modules |
| Module Type | 16-Point Isolated DC Output Module |
| Number of Outputs | 16 individually isolated outputs |
| Output Voltage Range | 10–30V DC |
| Nominal Voltage | 12/24V DC |
| Output Type | Sourcing/sinking transistor outputs |
| Control Type | Scheduled / synchronized output execution |
| Output Configuration | Point-to-point isolation |
| Continuous Current per Point | 1.0 A |
| Continuous Current per Module | Up to 8 A (derated by temperature) |
| Isolation Voltage | 250V continuous between outputs and backplane |
| Backplane Current (5.1V DC) | ~350 mA |
| Power Dissipation | ~3.3–4.5 W |
| Switching Time | ~1 ms range (fast scheduled response) |
| 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 | ~0.40–0.50 kg |
Physical Dimensions
- Size (H × W × D): 145 × 35 × 140 mm
The standard ControlLogix single-slot form factor ensures compatibility with existing chassis systems while supporting high-density isolated output architecture.
Recommended Related Models
The 1756-OB16IS is commonly used with:
- 1756-OB16 standard DC output module
- 1756-OB16E electronically fused 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 ControlLogix Output Modules
Within the ControlLogix ecosystem, commonly used output modules include:
- 1756-OB16IS scheduled isolated DC output module
- 1756-OB16 standard DC output module
- 1756-OB16E electronically fused output module
- 1756-OA16 AC output module
- 1756-OW16 relay output module
These modules are selected based on required timing precision, isolation level, and load type.
