Allen Bradley AB 96211473 DC Output Module 1771-OBD /C

Allen-Bradley 1771-OBD/C DC Output Module

The Allen-Bradley 1771-OBD/C is a 16-channel, non-isolated DC output module designed for seamless integration with PLC-5 systems. It efficiently controls various DC-powered devices, including pilot lamps, relay coils, and solenoid actuators.

Key Features

• Output Channels: 16 non-isolated outputs
• Voltage Range: 10 to 60 VDC, with a nominal output of 48 VDC
• Current Rating: 2 A per output (resistive load), not exceeding 8 A per module; 0.2 A per output for pilot duty applications
• Surge Current: 4 A per output for 10 ms, repeatable every 2 seconds; 25 A per output for 10 ms, repeatable every 2 seconds
• Minimum Load Current: 2.5 mA
• On-State Voltage Drop: Maximum of 1.5 VDC
• Off-State Leakage Current: Maximum of 0.5 mA
• Signal Delay: Off to On: 0.1 ms; On to Off: 0.2 ms
• Backplane Current: 400 mA at 5 VDC
• Power Dissipation: Maximum of 15.6 W
• Thermal Dissipation: 53.3 BTU/hr

Installation and Compatibility

The 1771-OBD/C module is compatible with 1771 I/O chassis models 1771-A1B through 1771-A4B, excluding the 1771-A4 chassis. It utilizes field wiring arms such as the 1771-WH, 1771-WHF, and 1771-WHFB for secure connections. Proper keying between positions 10 and 12, and 22 and 24, ensures correct module placement.

Environmental Specifications

• Operating Temperature: 0 to 60°C (32 to 140°F)
• Storage Temperature: -40 to 85°C (-40 to 185°F)
• Relative Humidity: 5% to 95% (non-condensing)
• Vibration Resistance: 2 g at 10 to 500 Hz
• Shock Resistance: Operating: 30 g; Non-operating: 50 g

Additional Information

The module features diagnostic LEDs for each output channel, providing real-time status indicators. It also includes a fuse protection system to safeguard against overcurrent conditions. For optimal performance, ensure all DC connection terminals (A-D) are shorted to prevent overload.

By integrating the 1771-OBD/C into your automation system, you benefit from reliable and efficient control of DC-powered devices, enhancing overall system performance and reliability.