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- Allen Bradley
- 1746-OB32/D
- PLC Module/Rack
- USA
- 248 × 173 × 58 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-OB32/D — Detailed Technical Overview
1. Product Introduction
The Allen Bradley 1746-OB32/D is a high-density digital DC output module designed for the SLC 500 PLC platform. The “/D” revision represents a later hardware version, offering improved stability and compatibility while maintaining the same functional characteristics as earlier revisions.
This module provides 32 sourcing DC output channels, allowing the control system to manage a large number of field devices from a single slot. It is commonly used to drive loads such as solenoids, relays, indicator lights, and other DC-powered actuators.
The transistor-based output design ensures fast switching performance and long service life. The module integrates directly into the SLC 500 chassis and communicates with the processor through the backplane, making it suitable for high-density automation systems where efficiency and reliability are critical.
2. Product Parameters
Technical Specifications
| Parameter | Value |
|---|---|
| Model | 1746-OB32/D |
| 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) | 0.35 – 0.45 kg |
3. Product Applications
The 1746-OB32/D is widely used in industrial automation systems that require control of multiple DC output signals within a compact system.
Typical applications include:
- Control of solenoid valves and pneumatic actuators
- Conveyor and material handling systems
- Packaging and assembly machinery
- Indicator lamps and alarm systems
- Relay-based motor control circuits
- High-density automation systems with multiple outputs
Its 32-channel configuration makes it especially suitable for large-scale systems where space optimization is important.
4. Product Advantages
High Output Density
Provides 32 output channels in a single module, reducing system size and hardware requirements.
Fast Switching Performance
Transistor outputs enable rapid response, suitable for time-sensitive control tasks.
Long Service Life
Solid-state design eliminates mechanical wear, improving reliability.
Efficient Panel Space Usage
High channel density reduces the number of modules needed in the rack.
Stable Industrial Operation
Designed to operate reliably in environments with electrical noise and temperature variations.
Clear Diagnostic Indicators
Each output includes an LED for easy status monitoring and troubleshooting.
Wide Voltage Compatibility
Supports a broad DC voltage range for flexibility in application design.
5. Brand Information
Allen Bradley is widely known in industrial automation for producing PLC systems, I/O modules, and control equipment.
Its products are used across manufacturing, energy, and infrastructure sectors due to their reliability and long-term operational stability.
6. Product Series
- Series Name: SLC 500
- Category: Digital Output Module (DC)
The SLC 500 series is a modular PLC platform designed for flexible configuration and reliable operation. It supports a wide range of digital, analog, and specialty modules for industrial automation systems.
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 |