The Allen-Bradley 1746-OV16 is a high-density 16-point discrete output module engineered for the SLC 500 programmable logic controller system. This unit provides sixteen sinking DC outputs, allowing for the control of field devices within a 10V to 50V DC range. As a sinking module, it functions by switching the negative side of the circuit, effectively completing the path to the common return for connected loads.
Features
Sixteen isolated sinking output channels for versatile control of DC loads.
Transistor-based switching architecture designed for high-speed, repetitive cycling.
Fast signal response times: 0.1 ms ON delay and 1.0 ms OFF delay.
Robust surge current handling of up to 3.0 Amps for 10 ms to accommodate inductive load inrush.
Compact SLC 500 form factor for efficient rack space utilization.
Applications
This module is widely utilized in industrial automation environments requiring high-speed discrete control, including solenoid valve actuation, relay driving, and indicator lamp signaling within SLC 500 control architectures.
Technical Specifications
Brand
Allen-Bradley
Product Line
SLC 500
Module Type
Digital DC Output (Sinking)
Number of Outputs
16
Voltage Category
24V DC
Operating Voltage Range
10-50V DC
Backplane Current (5V)
0.270 A
On-State Voltage Drop
1.2V at 0.5 A
Surge Current
3.0 A for 10 ms
Operating Temperature
0 to 60 degC
Installation Guidelines
Ensure the SLC 500 chassis power is disconnected before installing or removing the module.
Verify that the module is fully seated in the chassis slot and secured with the top and bottom retaining screws.
Use appropriate wiring practices for sinking outputs; ensure the common return is correctly tied to the negative side of the power supply.
Maintain proper ventilation within the control cabinet to ensure the operating environment remains within the 0 to 60 degC range.
Route signal wires away from high-voltage AC lines and high-EMI sources to prevent signal noise or interference.
FAQ
What is the primary function of the sinking configuration in the 1746-OV16?
The sinking configuration means the module switches the negative return path (ground side) of the circuit. When the output is energized, it provides the path to common, allowing the connected load to operate.
Can this module operate outside of 24V DC?
Yes, the module is rated for an operating voltage range of 10V to 50V DC, making it suitable for a variety of DC load requirements within that spectrum.
