Description
Description
The Allen-Bradley 1746-OV16 is a high-density discrete output module engineered for the SLC 500 programmable logic controller platform. This module provides sixteen (16) sinking DC outputs, allowing the PLC to control 24V DC to 48V DC loads. As a sinking module, it functions by completing the ground (negative) side of the circuit, providing a reliable path to the common return for connected field devices.
Features
- Sixteen (16) independent sinking output channels.
- Fast switching performance with a 0.1 ms ON-signal delay.
- Transistor-based output design for high-cycle, long-life operation.
- Integrated surge current protection capable of handling 3.0 Amps for 10 ms per point.
- Designed for seamless integration into the SLC 500 chassis backplane.
Applications
The 1746-OV16 is widely used in industrial automation environments for controlling DC-operated actuators, relays, solenoid valves, and indicator lamps. Its high-speed switching capability makes it suitable for time-critical control sequences and high-frequency cycling applications.
Technical Specifications
| Brand |
Allen-Bradley |
| Product Line |
SLC 500 |
| Module Type |
Digital DC Output (Sinking) |
| Number of Outputs |
16 |
| Operating Voltage Range |
10-50V DC |
| Backplane Current (5V DC) |
0.270 A (270 mA) |
| On-Signal Delay |
0.1 ms (resistive load) |
| Off-Signal Delay |
1.0 ms (resistive load) |
| Max On-State Voltage Drop |
1.2V at 0.5 A |
| Surge Current |
3.0 A for 10 ms (per point) |
| Operating Temperature |
0 to 60 degC (32 to 140 degF) |
Installation Guidelines
- Ensure the SLC 500 chassis power is disconnected before installing or removing the module.
- Insert the module into any available slot in the SLC 500 I/O chassis.
- Ensure the module is fully seated and the top and bottom retaining screws are tightened to secure the module in the chassis.
- Use shielded cables for field wiring to minimize electromagnetic interference (EMI).
- Maintain proper ventilation in the control cabinet to ensure the ambient temperature remains within the 0 to 60 degC operating range.
- Follow standard ESD (Electrostatic Discharge) precautions when handling the module to prevent damage to internal circuitry.
FAQ
What is the difference between a sinking and sourcing output?
A sinking output module (like the 1746-OV16) switches the negative (ground) side of the DC circuit, while a sourcing module switches the positive side. Ensure your field devices are compatible with sinking logic before installation.
Can this module be used with 48V DC loads?
Yes, the operating voltage range for this module is 10-50V DC, allowing it to interface with 24V DC and 48V DC systems.
