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- Allen Bradley
- 1746-OBP8/B
- PLC Module/Rack
- USA
- 145 × 35 × 140 mm
- 0.5kg
- 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-OBP8/B — Detailed Technical Overview
1. Product Introduction
The Allen Bradley 1746-OBP8/B is a high-current digital DC output module developed for the SLC 500 PLC platform. The “/B” revision represents an updated hardware version with improved stability and internal design refinements compared to earlier revisions, while maintaining full compatibility with existing systems.
This module provides eight sourcing DC output channels, designed specifically for applications requiring higher current output capability than standard modules. It is capable of directly driving demanding field loads such as high-power solenoids, heavy-duty relays, and industrial actuators without the need for additional interface components.
The module is installed in the SLC 500 chassis and communicates through the backplane. Its solid-state transistor outputs ensure fast switching performance, reduced wear, and reliable long-term operation in industrial environments.
2. Product Parameters
Technical Specifications
| Parameter | Value |
|---|---|
| Model | 1746-OBP8/B |
| Series | SLC 500 |
| Module Type | High-Current Digital DC Output Module |
| Number of Outputs | 8 (grouped) |
| Output Type | Sourcing (transistor) |
| Nominal Output Voltage | 24 V DC |
| Output Voltage Range | 20.4 – 26.4 V DC |
| Output Current per Channel | Up to 2.0 A |
| Maximum Module Current | Approx. 8 – 16 A |
| Surge Current | Up to 4 A (short duration) |
| Turn-On Delay | Approx. 0.1 ms |
| Turn-Off Delay | Approx. 1 ms |
| On-State Voltage Drop | ≤ 1.2 V |
| Off-State Leakage Current | ≤ 1 mA |
| Minimum Load Current | ≥ 1 mA |
| Backplane Current | Approx. 0.13 – 0.15 A @ 5V DC |
| Power Dissipation | Moderate (load-dependent) |
| Isolation | Electrical isolation (field to logic) |
| Status Indicators | 8 LEDs (per channel) |
| Operating Temperature | 0 to 60°C |
| Installation Type | Rack-mounted |
| Dimensions (mm) | 145 × 35 × 140 |
| Weight (kg) | 0.2 – 0.5 kg |
3. Product Applications
The 1746-OBP8/B is designed for industrial applications that require higher current output control directly from the PLC system.
Typical applications include:
- Driving high-current solenoid valves
- Controlling industrial relays and contactors
- Operating heavy-duty actuators
- Packaging and assembly equipment
- Conveyor and material handling systems
- Process automation systems with high-load outputs
Its high current capability allows it to replace intermediate relays or amplifiers, simplifying system design.
4. Product Advantages
High Current Output Capability
Each channel can deliver up to 2 A, suitable for demanding industrial loads.
Reduced System Complexity
Directly drives high-current devices without external relays or drivers.
Fast Switching Performance
Solid-state outputs provide rapid response for efficient control.
Improved Reliability
No mechanical components, resulting in longer service life.
Compact and Efficient Design
Eight high-current outputs in a single module save panel space.
Stable Industrial Operation
Designed to perform reliably in harsh and continuous-use environments.
Enhanced Revision Design
The /B version offers improved internal performance and durability.
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 and process industries due to their reliability and consistent operational performance.
6. Product Series
- Series Name: SLC 500
- Category: Digital Output Module (High-Current DC)
The SLC 500 series is a modular PLC platform designed for flexible configuration and reliable control. It supports digital, analog, and specialty modules for a wide range of industrial automation applications.
7. Recommended Models (Same Series / Related)
Related Models Table
| Model | Function | Outputs | Signal Type | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1746-OBP8 | Digital Output | 8 | High-current DC | 145 × 35 × 140 | 0.25 kg |
| 1746-OB8 | Digital Output | 8 | 24V DC | 145 × 35 × 130 | 0.3 kg |
| 1746-OB16 | Digital Output | 16 | 24V DC | 145 × 35 × 130 | 0.3 kg |
| 1746-OB32 | Digital Output | 32 | 24V DC | 248 × 173 × 58 | 0.35 kg |
| 1746-OV8 | Digital Output | 8 | 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-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 |