Allen-Bradley 1746-OV16 SLC 500 Output Module

1746-OV16 SLC 500 Output Module Overview

The Allen-Bradley 1746-OV16 provides a reliable and efficient solution for discrete output control. This module belongs to the trusted SLC 500 family and offers sixteen sinking output channels. Consequently, it enables you to manage multiple DC loads from a single chassis slot.

Specifically, this 1746-OV16 module delivers a nominal output voltage of 24 VDC. However, it operates effectively across a broader range from 10 to 50 VDC. Furthermore, each channel supports a continuous output current of 0.5A at 30°C. Therefore, it is well-suited for energizing relay coils, audible alarms, and pilot lights.

Key Technical Specifications

The 1746-OV16 is designed for consistent and dependable performance. Its electrical ratings ensure broad compatibility with standard field devices.

• Outputs: 16 (sinking type)

• Nominal Output Voltage: 24 VDC

• Output Voltage Range: 10-50 VDC

• Current per Output: 0.5 A at 30 °C; 0.25 A at 60 °C

• Continuous Current per Module: 8.0 A at 30 °C; 4.0 A at 60 °C

• Backplane Current Draw: 270 mA at 5 VDC

• Signal Delay (OFF to ON): 0.1 ms

• Signal Delay (ON to OFF): 1.0 ms

• On-State Voltage Drop (Max): 1.2V at 0.5 A

• Surge Current per Point: 3.0 A for 10 ms

• Thermal Dissipation (Total): 7.6 W maximum

Moreover, this module is organized as a single group of sixteen outputs. This simple structure makes wiring straightforward. Additionally, the OFF-state leakage current is only 1 mA, which prevents accidental activation of sensitive loads.

Mechanical and Environmental Parameters

This SLC 500 output module is built to endure typical industrial conditions. It operates reliably within a temperature range of 0 to 60°C. Meanwhile, the heat dissipation per point is rated at 0.388 W. For safety, the module provides isolation from the backplane. Please be aware that this module does not include built-in electronic protection. Therefore, we strongly recommend using external fusing on each output channel for reliable operation.

Installation and Wiring Guidelines

Installing the 1746-OV16 is quick and simple. It occupies just one slot in any SLC 500 chassis. You can mount it in either a local or remote rack configuration.

For wiring convenience, this module comes with a factory-installed removable terminal block (RTB). This terminal block can be detached from the module body. Consequently, you can pre-wire the RTB before attaching it to the module. This feature significantly reduces installation time and simplifies future maintenance. Furthermore, the terminal block uses standard screw-clamp connections for secure and reliable terminations.

Applications

The 1746-OV16 is particularly effective for high-current DC output applications. Common use cases include driving solenoid valves, controlling motor contactors, and managing indicator lamp panels. Additionally, its surge current capability (3.0A per point) allows it to handle inrush loads typical of incandescent lamps and relay coils. This versatility makes it a popular choice among system integrators and maintenance engineers alike.

Packaging List

Your shipment for the Allen-Bradley 1746-OV16 will include the following items:

• (1) 1746-OV16 SLC 500 output module

• (1) Removable terminal block (pre-installed)

Shipping Information

We ship all orders via FedEx, UPS, or DHL. Tracking numbers are provided upon dispatch. All items are carefully packaged to prevent damage during transit.

Frequently Asked Questions (FAQ)

1. What type of output does the 1746-OV16 provide?
The 1746-OV16 is a sinking output module. This means the output terminal connects to DC common when activated. It is designed for use with sourcing field devices that supply positive voltage.

2. Can I use this module with a 48 VDC load?
Yes. The 1746-OV16 supports an output voltage range from 10 to 50 VDC. Therefore, a 48 VDC load is fully compatible as long as the current stays within the rated limits.

3. Does the 1746-OV16 offer short-circuit protection?
No, the 1746-OV16 does not include built-in electronic protection. For safe and reliable operation, we strongly advise installing external fuses or circuit breakers on each output channel.

4. How do I wire the 1746-OV16 module?
The module includes a removable terminal block that you can detach for easy wiring. Simply secure each wire using the screw-clamp connections, then reattach the terminal block to the module. This design simplifies both initial installation and future modifications.

5. What is the maximum surge current per channel?
Each channel on the 1746-OV16 can handle a surge current of 3.0 A for up to 10 milliseconds. At 30°C, this surge can be repeated once every second. At 60°C, the repeat interval extends to two seconds.