Product Overview
The 1746-OV16 is part of the Allen-Bradley SLC 500 series, designed as a discrete output module with sixteen sinking channels. This module uses a sink wiring configuration and draws 0.270 A from the backplane at 5VDC.
Technical Specifications Breakdown
Key parameters for the 1746-OV16 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Module Type | Discrete output module |
| Number of Channels | 16 |
| Nominal Input Voltage | 24VDC |
| Input Voltage Range | 10-50 VDC |
| Wiring Configuration | Sink wiring configuration |
| Backplane Current Consumption | 0.270 A |
| Continuous Current Per Point | 0.50 A at 30 °C (86 °F); 0.25 A at 60 °C (140 °F) |
| Continuous Current Per Module | 8.0 A at 30 °C (86 °F); 4.0 A at 60 °C (140 °F) |
| On-State Voltage Drop, Max | 1.2V at 0.5 A |
| Surge Current Per Point | 3.0 A for 10 ms |
| Signal Delay, Max Resistive Load | On = 0.1 ms; Off = 1.0 ms |

Industry Applications
Common uses include:
- Machine Control: Energizing solenoid valves and contactors in packaging or material handling equipment.
- Indicating Systems: Driving panel lights and audible alarms in process control.
- Relay Logic: Interfacing with external relay coils for isolation or power distribution.
By choosing the 1746-OV16, operators gain a cost-effective upgrade path for legacy SLC 500 systems, reducing downtime through proven performance.
Installation & Setup Guidance
Install the module into any SLC 500 chassis slot. The removable terminal block simplifies wiring: connect DC loads to the sink outputs, ensuring the common is tied to the DC supply return. Verify the voltage range (10-50VDC) matches your field devices. The module occupies a single slot and requires no additional configuration beyond addressing in the SLC 500 processor.
Maintenance & Reliability
Inspect the terminal block connections periodically for tightness and signs of corrosion. The module's heat dissipation is 7.6W total, so ensure adequate airflow in the enclosure. Derate output current at higher ambient temperatures as specified (0.25A per point at 60°C). No internal adjustments are needed.
Are you struggling with reliable DC load control in your SLC 500 system?
Industrial automation often demands precise and robust switching of DC-operated devices like relay coils and indicator lights. The Allen-Bradley 1746-OV16 offers a proven solution as a high-current discrete sinking output module.

Compatibility & Integration
It is compatible with all SLC 500 modular systems. The sinking output configuration works with common DC loads; for sourcing loads, use a different module type.
Selection Guide & Purchasing Advice
When selecting the 1746-OV16, consider your load current and temperature environment. For high-current or high-temperature applications, derate accordingly. AutoDCSTech offers this module with verified authenticity and fast shipping. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 1746-OV16 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
