The 1756-OW16I ControlLogix Relay Output Module from Rockwell Automation is a rugged 16-point isolated relay output module engineered for industrial automation systems that require flexible AC/DC load switching, electrical isolation, and dependable relay-based control.
Unlike transistor output modules, the 1756-OW16I uses mechanical relay contacts, allowing it to control a wide variety of voltage types and load categories. This makes it highly suitable for applications involving motors, solenoids, contactors, pilot lights, alarms, and mixed-voltage field devices.
Its isolated relay groups improve electrical separation and help increase system reliability in industrial environments where multiple load types are connected within the same ControlLogix platform.
Technical Specifications (Including Size & Weight)
| Parameter | Specification |
|---|---|
| Model | 1756-OW16I |
| Series | ControlLogix Relay Output Modules |
| Module Type | 16-Point Isolated Relay Output Module |
| Number of Outputs | 16 relay outputs |
| Output Type | Mechanical relay contacts |
| Contact Configuration | Normally open relay outputs |
| Voltage Range | 5–265V AC / 5–125V DC |
| Isolation | Group isolated relay outputs |
| Continuous Current per Point | 2 A per output |
| Continuous Current per Module | 8 A maximum |
| Minimum Load Current | 10 mA |
| Contact Life | Mechanical: millions of operations (load dependent) |
| Switching Time | ON: ~10 ms / OFF: ~15 ms |
| Isolation Voltage | 250V continuous |
| Backplane Current (5.1V DC) | ~150 mA |
| Power Dissipation | ~5–6 W |
| Terminal Block | 1756-TBSH / 1756-TBNH |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Relative Humidity | 5%–95% non-condensing |
| Weight | ~0.45–0.65 kg |
Physical Dimensions
- Size (H × W × D): 145 × 35 × 140 mm
The module uses the standard single-slot ControlLogix format, simplifying integration into existing industrial chassis systems.
Recommended Related Models
The 1756-OW16I is commonly used alongside:
- 1756-IB16 digital input module
- 1756-OB16 transistor output module
- 1756-OA16 AC output module
- 1756-OW16 standard relay output module
- 1756-L71 / L73 ControlLogix processors
- 1756-EN2T EtherNet/IP communication modules
Popular Allen-Bradley Relay & Output Modules
Commonly used ControlLogix output modules include:
- 1756-OW16I isolated relay output module
- 1756-OW16 standard relay output module
- 1756-OB16 DC transistor output module
- 1756-OV16E electronically fused output module
- 1756-OA16 AC output module
These modules support a wide range of industrial switching requirements across modern automation systems.
