Allen-Bradley 1746-OV32 SLC 500 Output Module

1746-OV32 SLC 500 Output Module Overview

The Allen-Bradley 1746-OV32 module offers a robust solution for your discrete output needs. This unit belongs to the trusted SLC 500 series and provides thirty-two sinking output channels. Consequently, it allows you to control numerous loads directly from a single chassis slot.

Specifically, this 1746-OV32 module delivers a nominal output voltage of 24 VDC. However, it functions effectively across a wide range from 5 to 50 VDC. Furthermore, each channel supports a continuous output current of 0.5A at 30°C. Therefore, it is suitable for driving relays, solenoids, and indicator lights.

Key Technical Specifications

The 1746-OV32 is engineered for reliable performance. Its electrical characteristics ensure compatibility with various industrial loads.

• Outputs: 32 (sinking type)

• Nominal Output Voltage: 24 VDC

• Output Voltage Range: 5-50 VDC

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

• Continuous Current per Module: 8 A

• Backplane Current Draw: 190 mA at 5 VDC

• Signal Delay (OFF to ON): 0.1 ms

• Signal Delay (ON to OFF): 1.0 ms

• Thermal Dissipation (Total): 6.45 Watts maximum

Moreover, the module is organized into two isolated groups of sixteen outputs each. This grouping provides flexibility for powering different circuits. Additionally, it features a high step response speed of 60 ms in and 2.5 ms out. The surge current capability is 1.0A for 10 ms, which is repeatable every second at 30°C.

Mechanical and Environmental Parameters

This SLC 500 output module is built to withstand standard industrial environments. Its thermal dissipation ranges from a minimum of 0.95 W to a maximum of 6.45 W. Meanwhile, the per-channel dissipation is rated at 0.172 W. The module operates reliably within a temperature range of 0 to 60°C. For added safety, the backplane isolation voltage is 1500VAC for one minute. Please note that this module does not include built-in electronic protection. Therefore, we strongly recommend using external fusing for each output channel.

Installation and Wiring Guidelines

Installing the 1746-OV32 is straightforward. It occupies just one slot in any SLC 500 chassis. You can place it in either a local or remote I/O rack without any special configuration.

For wiring, the module comes with a standard 40-pin female connector and crimp-type pins. The default wiring method uses the 1746-NC3 connector kit. Alternatively, you may use the 1492 wiring system for a more organized setup. This optional approach involves the 1492-CABLExx cable and the 1492-IFM40xx DIN-rail terminal block. This method simplifies field wiring and makes maintenance much easier.

Applications

The 1746-OV32 is particularly well-suited for high-density, low-current DC output applications. Common use cases include controlling indicator panels, driving small relays, and managing solenoid valves. Additionally, its high current capability (up to 8A per module) allows it to handle more demanding loads as well. This versatility makes it a popular choice among system integrators.

Packaging List

Your shipment for the Allen-Bradley 1746-OV32 will include the following items:

• (1) 1746-OV32 SLC 500 output module

• (1) 40-pin female connector with crimp pins

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 is the difference between sinking and sourcing outputs?
The 1746-OV32 is a sinking output module. This means the output terminal provides a path to ground (DC common) when activated. It is typically used with sourcing field devices that supply positive voltage.

2. Can I use this module with a 48 VDC load?
Yes. The 1746-OV32 supports an output voltage range from 5 to 50 VDC. Therefore, a 48 VDC load is fully compatible as long as the current does not exceed the rated limits.

3. Does the module provide short-circuit protection?
No, the 1746-OV32 does not include electronic protection. For reliable operation, we strongly advise installing external fuses or circuit breakers on each output channel.

4. How do I connect the wiring to this module?
You can use the supplied 40-pin connector with crimp pins. For a more convenient solution, the 1492-IFM40xx terminal block and 1492-CABLExx cable are recommended. This allows for easy disconnection and troubleshooting.

5. What is the maximum surge current per channel?
Each channel can handle a surge current of 1.0 A for up to 10 milliseconds. At 30°C, this surge can be repeated every second. At 60°C, the repeat interval extends to two seconds.