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- Allen Bradley
- 1746-OB32
- PLC Module/Rack
- USA
- 248 × 173 × 58 mm
- 0.4kg
- 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.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
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Allen Bradley 1746-OB32 — Detailed Technical Overview
1. Product Introduction
The Allen Bradley 1746-OB32 is a high-density digital DC output module designed for use in the SLC 500 PLC platform. It is intended for applications where a large number of discrete outputs must be controlled efficiently within a compact system architecture.
This module provides 32 sourcing DC output channels, allowing it to control multiple field devices such as solenoids, relays, indicator lamps, and actuators. Its transistor-based design ensures fast switching, long service life, and reliable performance compared to mechanical relay outputs.
The module installs directly into the SLC 500 chassis and communicates with the processor via the backplane. It is designed for stable operation in industrial environments, offering consistent output performance and easy integration into automation systems.
2. Product Parameters
Technical Specifications
| Parameter | Value |
|---|---|
| Model | 1746-OB32 |
| Series | SLC 500 |
| Module Type | Digital DC Output Module (Sourcing) |
| Number of Outputs | 32 (grouped) |
| Output Voltage Range | 5–50 V DC |
| Nominal Voltage | 24 V DC |
| Output Current per Channel | Approx. 0.25 A |
| Maximum Current per Module | Approx. 8 A |
| Surge Current | Up to 1 A (short duration) |
| Output Type | Transistor (sourcing) |
| Turn-On Delay | Approx. 0.1 ms |
| Turn-Off Delay | Approx. 1 ms |
| Off-State Leakage Current | ≤ 1 mA |
| On-State Voltage Drop | ≤ 1.2 V |
| Minimum Load Current | Approx. 1 mA |
| Backplane Current | Approx. 180–200 mA @ 5V DC |
| Power Dissipation | Approx. 6–8 W |
| Isolation | Electrical isolation (field to logic) |
| Status Indicators | 32 LEDs (per channel) |
| Operating Temperature | 0 to 60°C |
| Installation Type | Rack-mounted |
| Dimensions (mm) | 248 × 173 × 58 |
| Weight (kg) | 0.3 – 0.4 kg |
3. Product Applications
The 1746-OB32 is widely used in industrial automation systems that require control of multiple DC output devices.
Typical applications include:
- Control of solenoid valves and actuators
- Conveyor and material handling systems
- Packaging and assembly equipment
- Indicator lights and alarm systems
- Relay-driven motor control circuits
- Automated production lines with high output demand
Its high channel density makes it particularly suitable for systems with limited cabinet space but extensive output requirements.
4. Product Advantages
High Output Density
Provides 32 outputs in one module, reducing the number of modules required.
Fast Switching Performance
Transistor outputs ensure rapid response for time-critical control operations.
Solid-State Reliability
No moving parts, resulting in longer service life and reduced maintenance.
Efficient Space Utilization
Compact design helps optimize panel layout.
Strong Noise Immunity
Designed to operate reliably in electrically noisy industrial environments.
Clear Status Indication
Individual LEDs allow easy monitoring and troubleshooting of each output.
Flexible Voltage Support
Wide DC voltage range allows use with different field devices.
5. Brand Information
Allen Bradley is widely known in industrial automation for its PLC systems, I/O modules, and control equipment.
Its products are used globally in manufacturing and process industries due to their durability and consistent operational performance.
6. Product Series
- Series Name: SLC 500
- Category: Digital Output Module (DC)
The SLC 500 series is a modular PLC platform designed for flexible expansion and reliable industrial control. It supports a wide variety 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-OB16 | Digital Output | 16 | 24V DC | 145 × 35 × 130 | 0.3 kg |
| 1746-OB8 | Digital Output | 8 | 24V DC | 145 × 35 × 130 | 0.3 kg |
| 1746-OV32 | Digital Output | 32 | 24V DC (sinking) | 145 × 35 × 130 | 0.35 kg |
| 1746-OA16 | Digital Output | 16 | 120V AC | 145 × 35 × 130 | 0.35 kg |
| 1746-OW16 | Digital Output | 16 | Relay | 145 × 35 × 130 | 0.4 kg |
8. Recommended Popular Models (Same Brand)
Popular Models Table
| Model | Series | Function | Type | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1756-OB32 | ControlLogix | Digital Output | 32-channel DC | 140 × 112 × 145 | 0.6 kg |
| 1756-OB16E | ControlLogix | Digital Output | 16-channel DC | 140 × 112 × 145 | 0.6 kg |
| 1769-OB32 | CompactLogix | Digital Output | 32-channel DC | 118 × 87 × 140 | 0.6 kg |
| 1769-OB16 | CompactLogix | Digital Output | 16-channel DC | 118 × 87 × 140 | 0.5 kg |
| 1606-XLS240E | Power Supply | DIN Rail PSU | 24V DC | 123 × 50 × 125 | 0.8 kg |