Overview
The Allen-Bradley 1746-OW16 Series C is a 16-point digital contact output module engineered for integration into SLC 500 modular programmable logic controllers. This solid-state relay output module delivers proven performance in industrial automation, motor control, and discrete switching applications. The normally open relay architecture provides isolated switching across two groups of eight channels with a shared common per group.
Key Features
- 16 normally open relay output channels in two groups of 8 per common
- Wide operating voltage range: 5-265V AC or 5-125V DC
- Solid-state relay outputs for reliable digital switching without mechanical contacts
- Removable terminal blocks for fast, field-friendly wiring and maintenance
- Class I, Division 2 hazardous location certification for demanding industrial environments
- Compact rack-mount form factor compatible with SLC 500 chassis
Technical Specifications
- Output Type: Relay (Normally Open)
- Number of Points: 16 (2 groups of 8 per common)
- Operating Voltage (AC): 5-265V AC
- Operating Voltage (DC): 5-125V DC
- Continuous Current per Output: 1.5A @ 120V AC, 1.2A @ 24V DC
- Backplane Current Draw: 170 mA @ 5V DC, 180 mA @ 24V DC
- Signal Delay (resistive load): 10 ms ON / 10 ms OFF
- Isolation Voltage: 1500V AC (backplane to output), 500V DC (between outputs)
- Heat Dissipation: 0.033W per point, 5.70W max
- Certifications: UL, cUL, GOST, KCC, C-Tick, CE
Typical Applications
The 1746-OW16 is widely deployed in machine automation, process control, and industrial switching systems where reliable contact output control is critical. Common applications include:
- Pump and motor control relay switching
- Solenoid valve actuation
- Indicator light and alarm control
- Discrete automation machine control
- Heavy-duty industrial environments requiring Class I, Division 2 approval
Compatibility & Replacements
Compatible With
- SLC 500 modular controller platforms (all versions)
- SLC 5/01, 5/02, 5/03, 5/04, and 5/05 processors
- 1746-A2, 1746-A4, 1746-A10, 1746-A13 chassis backplanes
- RSLogix 500 programming software
- Standard 120V AC and 24V DC industrial control circuits
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering for specific replacement applications. Series A, B, and earlier revisions may be directly replaced by this Series C unit in existing SLC 500 installations.
Works With
- RSLogix 500 ladder logic programming
- Studio 5000 (with proper gateway configuration)
- Standard industrial automation control wiring schemes
- External 24V DC power supplies (user-supplied where needed)
