Description
1746-OB8 A-B Programmable controller
Product Dimensions:
Product Description
The Allen-Bradley 1746-OB8 is an 8-channel digital output module designed for use in the SLC 500 PLC system. It provides reliable switching capability for controlling industrial loads such as relays, solenoids, motor starters, and indicator lamps. The module is designed for ease of integration and robust operation in a variety of industrial environments.
Product Specifications
Parameter | Value/Description |
---|---|
Part Number | 1746-OB8 |
Manufacturer | Allen-Bradley (Rockwell Automation) |
Product Type | Digital Output Module |
Number of Outputs | 8 |
Output Type | AC/DC Sourcing (Relay) |
Voltage Range | 5–265V AC, 5–125V DC |
Current per Point | 2A maximum |
Current per Module | 8A maximum |
Isolation | 1500V AC between outputs and backplane |
Backplane Current | 190mA at 5V DC |
Indicator LEDs | One per output point (status indication) |
Removable Terminal Block | Yes (1746-TBC or compatible) |
Operating Temperature | 0–60°C (32–140°F) |
Relative Humidity | 5–95% (non-condensing) |
Certifications | UL, CSA, CE, C-Tick |
Product Advantages
- Flexible Voltage Support: Handles a wide range of AC and DC voltages, making it suitable for diverse applications.
- Relay-Based Outputs: Electrically isolated and suitable for inductive or resistive loads.
- Modular Design: Hot-swappable terminal blocks allow for easier maintenance and reduced downtime.
- Visual Status Indication: Each output point has an LED for quick diagnostics and troubleshooting.
- Proven Reliability: Widely used in legacy and modern SLC 500 systems with a strong track record of durability.
- Ease of Integration: Fully compatible with SLC 500 series PLCs and programming software.
Precautions
- Load Compatibility: Ensure connected loads do not exceed the maximum current ratings per point or per module.
- Backplane Power: Verify that the SLC 500 chassis can supply sufficient backplane current (190mA at 5V DC).
- Surge Protection: Use external protection devices such as snubbers or surge suppressors when controlling inductive loads.
- Terminal Block Handling: Always power down the system before installing or removing terminal blocks.
- Environmental Conditions: Do not operate outside the specified temperature and humidity ranges to avoid malfunction or damage.
- Wiring Safety: Follow proper grounding and wiring practices to prevent electrical noise or interference.
Product Applications
The 1746-OB8 is widely used in industrial automation and control systems, including:
- Machine Control: Activates solenoids, relays, and motor starters in packaging, printing, and assembly machinery.
- Process Control: Controls valves, alarms, and pumps in water treatment, chemical processing, and HVAC systems.
- Material Handling: Interfaces with conveyors, diverters, and sorters in automated warehouses and distribution systems.
- Building Automation: Drives lighting, HVAC actuators, and security systems in commercial and industrial facilities.
- Panel Indication: Powers indicator lamps and annunciators in control panels and operator stations.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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