Allen-Bradley 1771-OB PLC-5 Digital Output Module
$123.00
$320.00
Penerangan
Overview
The Allen-Bradley 1771-OB is an 8-channel digital DC output module designed for PLC-5 control systems. It provides discrete output switching for field devices such as solenoids, relays, indicators, and actuators in industrial automation environments.
Engineered for rack-based PLC architecture, the module delivers stable switching performance with built-in protection features and supports high-current load applications across distributed control systems.
Key Features
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8 independent digital DC output channels
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Source-type output configuration
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Designed for PLC-5 1771 series chassis integration
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High current switching capability for industrial loads
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Conformal coated electronics for improved environmental resistance
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Rack-mounted installation with dedicated wiring arm support
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Fast switching response for real-time control applications
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Suitable for both machine-level and process-level automation
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Allen-Bradley |
| Model | 1771-OB |
| Product Type | Digital DC Output Module |
| Product Series | PLC-5 |
| Number of Outputs | 8 Channels |
| Output Type | DC Source Output |
| Operating Voltage Range | 10–27 V DC |
| Voltage Category | 10–60 V DC (System Rated) |
| Backplane Current | 165 mA |
| Max Current per Output | 1.5 A |
| Max Total Module Current | 8 A |
| Power Dissipation | 16.9 W |
| Thermal Dissipation | 57.6 BTU/hr |
| Signal Turn-Off Delay (DC) | ~50 ms |
| Signal Turn-Off Delay (AC equivalent) | ~45 ±15 ms |
| Data Format | BDC / Natural Binary |
| Wiring Interface | 1771-WH Wiring Arm |
| Mounting Type | Rack Mount |
| Environmental Protection | Conformal Coated |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity Range | 5–95% Non-Condensing |
| Weight | 2.16 lbs |
Application Areas
The 1771-OB output module is commonly applied in:
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Industrial machine control systems
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Conveyor and material handling equipment
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Process automation output control
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Solenoid and actuator switching circuits
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Packaging machinery systems
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Factory production line control
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Relay interface applications
Compatibility Notes
The module is designed for integration within Allen-Bradley PLC-5 1771 chassis systems and requires a compatible rack-mounted backplane architecture. It operates alongside PLC processors, I/O adapters, and power supply modules within the same system.
FAQ
How many outputs does the 1771-OB provide?
It includes 8 discrete DC output channels.
What type of loads can it control?
It is suitable for resistive and inductive loads such as relays, solenoids, and indicators within rated current limits.
Is the module protected against environmental conditions?
Yes. The module is conformal coated for improved resistance to industrial environments.
Does it require a wiring arm?
Yes. The 1771-WH wiring arm is used for field wiring connections.
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