Overview
The Allen-Bradley 1746-OV16 is a discrete DC output module designed for SLC 500 modular controllers. This Series C unit provides 16 sinking output channels with a 10-50VDC operating range and 24VDC nominal voltage. The module connects directly to the SLC 500 chassis via a single slot and includes a removable terminal block for simplified field wiring. Built to control relays, indicator lights, solenoid valves, and other DC-operated electrical loads in automated manufacturing and process control systems.
Key Features
- 16 DC output channels in one common group
- 10-50VDC output voltage range with 24VDC nominal
- 0.5 A per output at 30°C; 0.25 A per output at 60°C
- Removable terminal block for faster installation and troubleshooting
- Sinking (current-sink) configuration for independent load power supplies
- Fast response time: 0.1 ms ON, 1.0 ms OFF
Technical Specifications
- Output Channels: 16 discrete DC outputs (one group)
- Output Voltage Range: 10-50 VDC
- Nominal Output Voltage: 24 VDC
- Continuous Current per Point: 0.50 A @ 30°C (86°F); 0.25 A @ 60°C (140°F)
- Continuous Current per Module: 8.0 A @ 30°C; 4.0 A @ 60°C
- Surge Current per Point: 3.0 A for 10 ms (repeatable: 1 sec @ 30°C, 2 sec @ 60°C)
- Backplane Current Consumption: 0.270 A @ 5 VDC
- Signal Delay: ON = 0.1 ms; OFF = 1.0 ms
- OFF-State Leakage Current: 1 mA maximum
- ON-State Voltage Drop: 1.2 V @ 0.5 A
- Operating Temperature: 0 to 60°C (32 to 140°F)
- Humidity: 0 to 95% non-condensing
- Heat Dissipation: 0.388 W per point; 7.6 W total
- Module Type: Single slot-width, fits modular SLC 500 chassis
- Terminal Block: Removable, #18 AWG conductor compatible
Typical Applications
The 1746-OV16 is commonly deployed in machine control, HVAC systems, material handling automation, small process control, and assembly line operations where independent load power supplies are required. Its sinking output configuration makes it ideal for applications where electrical loads operate on their own supply voltage rather than shared PLC power, eliminating the need for external relay isolation.
Compatibility & Replacements
Compatible With
- Allen-Bradley SLC 500 modular controllers and processors (1746, 1747 series)
- SLC 500 modular chassis (5/01, 5/02, 5/03, 5/04 processor families)
- RSLogix 500 programming software
- Industrial automation systems using SLC 500 platforms
Replaces / Drop-In Replacement For
- Allen-Bradley 1746-OV16 (Series A, Series B, Series C interchangeable)
- Direct replacement for legacy 1746-OV16 modules
Works With
- RSLogix 500 (native support with ID Code 0509)
- Allen-Bradley SLC 500 backplane communication
- DC load control via sinking configuration (relay coils, solenoids, indicators)
- Modular I/O terminal blocks: 1492-CABLE RTBB series
