Introduction
Plant floors have changed a lot over the past three decades. Pneumatic relays gave way to PLC racks, and hard-wired panels became distributed I/O. Through that evolution, the Allen-Bradley SLC 500 stayed on the job in thousands of oil, gas, and process facilities. The 1746-OVP16 is one of the modules that keeps those racks productive. It is a digital DC output module with 16 sinking outputs, built for high-current switching duties where simple discrete cards fall short.
What the 1746-OVP16 Does
The 1746-OVP16 is a high-current sinking 24V DC output module for the SLC 500 platform, manufactured by Rockwell Automation. Each of its 16 outputs handles demanding loads, and the module includes a fused common with a blown-fuse LED indicator. If the fuse opens, the LED lights so technicians can spot the fault without pulling the card. The same indicator also lights during a processor error, and all outputs turn off for a safe state.
Color-coded removable terminal blocks (RTBs) simplify field wiring and module swaps. Front-facing LEDs display I/O point status at a glance.
Technical Specifications
| Specification | Value |
|---|---|
| Module Type | Digital DC Output Module |
| Voltage Range | 20.4-26.4 Volts DC Sink |
| Outputs | 16 |
| Current/Output | 1.5-1 amps |
| Current/Module | 6.4 amps |
| Backplane Current (5 Volts) | 250 milliamps |
| Step Response | 60 milliseconds in, 2.5 milliseconds out |
| Operating Temperature | 0-60 °C |
| Operating Shock | 30g |
| Thermal Dissipation | 6.26 W max |
Where It Fits
Oil and gas operations often need outputs that drive valves, contactors, and indicator banks directly. The 1746-OVP16 suits these high-current duties. A pipeline skid can use it to energize solenoid pilot valves across 16 points. A compressor station might switch alarm beacons and relay coils from the same card. Because the module tolerates a 30g operating shock, it holds up in vibrating pump rooms and remote wellhead panels.
Installation Notes
Mount the module in a clean, dry industrial environment, matching the 0-60 °C operating range. Use the color-coded RTBs to land field wiring, and confirm the sinking configuration before energizing loads. Keep the front LEDs visible so operators can read point status during startup. For SLC 500 chassis placement, follow the rack’s slot rules and power budget.
Reliability and Maintenance
Inspect terminal blocks periodically for loose connections and heat discoloration. Watch the blown-fuse LED during routine rounds; a lit indicator points to a fuse event or processor fault. Keep the enclosure free of dust and moisture to protect the card’s long-term performance. Spares on the shelf shorten unplanned downtime, and Oil AutoTech offers fast dispatch, worldwide.
Selection Checklist
Before ordering, confirm your rack accepts SLC 500 modules, verify your field devices match the 20.4-26.4V DC sinking output, and check that 16 points cover your I/O count. If you need hands-on technical selection help, contact Oil AutoTech today for pricing and availability.
Please verify current lifecycle status and availability with Oil AutoTech before ordering.
