Excellent PLC
Product Introduction
The Allen-Bradley 1746-OB8/A is a DC digital output module designed for the SLC 500 programmable controller platform. As a Series A module, it provides reliable control of DC-powered field devices, offering stable performance in a wide range of industrial automation applications.
This module features 8 current-sourcing output channels, each capable of delivering 10–50V DC signals. It is typically used to control devices such as relays, solenoids, indicator lights, and small actuators. The module converts digital commands from the PLC into electrical output signals, enabling precise and responsive control of connected equipment.
With its open-style chassis design, the 1746-OB8/A allows straightforward wiring and easy integration into control panels. Its solid-state transistor outputs provide fast switching and long-term durability, making it a practical choice for both new installations and maintenance of existing SLC 500 systems.
Product Specifications
| Parameter | Description |
|---|---|
| Manufacturer | Allen-Bradley |
| Series | SLC 500 |
| Module Type | DC Digital Output Module |
| Catalog Number | 1746-OB8/A |
| Series Version | Series A |
| Module Classification | General-Purpose Output Module |
| Number of Channels | 8 Outputs |
| Output Type | Transistor Sourcing (PNP) |
| Output Voltage Range | 10–50V DC |
| Output Current (per channel) | Approx. 0.5 A |
| Output Configuration | Open-style transistor outputs |
| Switching Speed | High-speed solid-state |
| Isolation | Group isolation (backplane to field) |
| Backplane Current Consumption | Approx. 0.085 A |
| Operating Temperature | 0 to 60°C |
| Storage Temperature | -40 to 85°C |
| Installation | SLC 500 Chassis |
| Wiring Category | Category 1 |
| Dimensions | 144.5 × 34.6 × 130.18 mm |
| Weight | 0.181 kg |
Applications
● Industrial Equipment Control
Used to drive DC devices such as relays, solenoids, and indicator lights in control systems.
● Machine Automation Systems
Provides reliable switching for actuators and auxiliary devices in automated machinery.
● Packaging and Assembly Lines
Supports control of multiple output devices in production environments.
● Material Handling Systems
Controls conveyors, positioning devices, and signaling components using DC outputs.
● Panel Integration and System Expansion
Suitable for expanding output capacity in existing SLC 500 installations.
Advantages
● Reliable DC Output Control
Delivers stable 10–50V DC signals for consistent operation of field devices.
● Fast Switching Performance
Solid-state transistor outputs enable rapid response for control applications.
● Compact and Modular Design
Easily integrates into SLC 500 chassis, saving space in control panels.
● Open-Style Wiring Flexibility
Simplifies installation and maintenance with accessible wiring configuration.
● Durable Solid-State Design
Eliminates mechanical wear, improving long-term reliability.
● Wide Application Compatibility
Supports a broad range of DC-powered industrial equipment.
