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- Allen Bradley
- 1746-OW4
- PLC Module/Rack
- USA
- 145 × 35 × 130 mm
- 0.45kg
- Xiamen, China
- New & In Stock
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We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
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Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
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We provide 7*24 hours service to our customers. We will be there whenever you need us.
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All our products are priced very favorably because we have our own warehouse and supply.
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Allen Bradley 1746-OW4 — Detailed Technical Overview
1. Product Introduction
The Allen Bradley 1746-OW4 is a digital relay output module designed for the SLC 500 PLC system. It is built to provide flexible switching capability for both AC and DC loads, making it suitable for a wide range of industrial control applications.
This module features four independent relay contact outputs. Unlike transistor-based modules, relay outputs allow the switching of higher voltage and mixed load types, including AC and DC circuits. This makes the 1746-OW4 especially useful in systems where load types vary or electrical isolation is required.
The module is installed in the SLC 500 chassis and communicates with the controller through the backplane. Its robust relay design ensures reliable switching performance, while internal isolation helps protect the control system from electrical disturbances in the field wiring.
2. Product Parameters
Technical Specifications
| Parameter | Value |
|---|---|
| Model | 1746-OW4 |
| Series | SLC 500 |
| Module Type | Digital Relay Output Module |
| Number of Outputs | 4 |
| Output Type | Relay Contact (Normally Open) |
| Operating Voltage | 5–265 V AC / 5–125 V DC |
| Load Rating | Up to 5 A @ 250 V AC |
| Load Rating (DC) | Approx. 1 A @ 24 V DC |
| Maximum Current per Module | Approx. 8 A |
| Minimum Load Current | ≥ 1 mA |
| Output Delay (ON/OFF) | Approx. 10 ms |
| Backplane Current | Approx. 0.045 A @ 5V DC |
| Power Dissipation | Approx. 1.9 W total |
| Heat Dissipation per Point | Approx. 0.13 W |
| Isolation | Relay isolation between field and logic |
| Wiring Capacity | Supports 2–14 AWG wires |
| Status Indicators | 4 LEDs (per channel) |
| Operating Temperature | 0 to 60°C |
| Installation Type | Rack-mounted |
| Dimensions (mm) | 145 × 35 × 130 |
| Weight (kg) | 0.25 – 0.45 kg |
3. Product Applications
The 1746-OW4 is widely used in industrial systems that require flexible relay-based switching.
Typical applications include:
- Switching AC loads such as motors, lamps, and heaters
- Controlling DC devices including relays and solenoids
- Interface control between PLC and high-voltage equipment
- Packaging and assembly systems
- Conveyor and material handling equipment
- Applications requiring electrical isolation between control and load
Because of its relay design, it is ideal for mixed-voltage environments where both AC and DC loads are present.
4. Product Advantages
Flexible Load Compatibility
Supports both AC and DC loads, making it suitable for diverse applications.
High Electrical Isolation
Relay contacts provide strong isolation between control logic and field circuits.
Versatile Switching Capability
Can handle higher voltages compared to transistor output modules.
Robust Industrial Design
Designed for stable operation in harsh industrial environments.
Simple Wiring Configuration
Terminal structure allows secure and straightforward wiring.
Reliable Performance
Mechanical relay contacts ensure dependable switching under varying conditions.
Wide Application Range
Suitable for both low-power control signals and higher-power switching tasks.
5. Brand Information
Allen Bradley is widely recognized in industrial automation for its PLC systems, I/O modules, and control equipment.
Its products are commonly used in manufacturing, process control, and infrastructure due to their reliability and long service life.
6. Product Series
- Series Name: SLC 500
- Category: Relay Output Module
The SLC 500 series is a modular PLC platform designed for flexible configuration and dependable industrial control. It supports a broad range of digital, analog, and specialty modules.
7. Recommended Models (Same Series / Related)
Related Models Table
| Model | Function | Outputs | Signal Type | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1746-OW8 | Digital Output | 8 | Relay | 145 × 35 × 130 | 0.35 kg |
| 1746-OW16 | Digital Output | 16 | Relay | 145 × 35 × 130 | 0.4 kg |
| 1746-OA16 | Digital Output | 16 | AC Triac | 145 × 35 × 130 | 0.35 kg |
| 1746-OB16 | Digital Output | 16 | 24V DC | 145 × 35 × 130 | 0.3 kg |
| 1746-OV16 | Digital Output | 16 | 24V DC (sinking) | 145 × 35 × 130 | 0.3 kg |
8. Recommended Popular Models (Same Brand)
Popular Models Table
| Model | Series | Function | Type | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1756-OW16I | ControlLogix | Digital Output | Relay | 140 × 112 × 145 | 0.6 kg |
| 1756-OB32 | ControlLogix | Digital Output | DC | 140 × 112 × 145 | 0.6 kg |
| 1769-OW16 | CompactLogix | Digital Output | Relay | 118 × 87 × 140 | 0.6 kg |
| 1769-OB16 | CompactLogix | Digital Output | DC | 118 × 87 × 140 | 0.5 kg |
| 1606-XLS240E | Power Supply | DIN Rail PSU | 24V DC | 123 × 50 × 125 | 0.8 kg |