1771-OB

Overview

• Manufacturer: Rockwell Automation
• Brand: Allen-Bradley
• Part Number: 1771-OB
• Module Type: DC Output Driver Module
• Outputs per Module: 8

Specifications

• Module Location: 1771 I/O chassis
• Input Voltage Range: 10 to 27V DC
• Output Current: 1.5A per output (max 8A per module)
• Surge Current (maximum): 4A for 1ms, repeatable every 1 second
• Off-state Leakage Current: 1mA per output
• On-state Voltage Drop: 2V DC (maximum)
• Delay Times (Turn on/off): 10ms

Power & Thermal

• Power Dissipation:
  • Max: 16.9W
  • Min: 0.9W
• Thermal Dissipation:
  • Max: 57.6 BTU/hr
  • Min: 3.0 BTU/hr
• Backplane Current: 165mA @ 5V DC +5%

Electrical Isolation

• Opto-electrical Isolation: 1500V AC (RMS)

Environmental Conditions

• Operating Temperature: 0°C to 60°C (32°F to 140°F)
• Storage Temperature: -40°C to 85°C (-40°F to 185°F)
• Relative Humidity: 5% to 95% (without condensation)

Wiring & Mounting

• Wire Size: 14 gauge stranded maximum
• Insulation: 3/64 inch maximum
• Keying: Between 4 and 6; Between 18 and 20
• Fuses: 2A 8AG (one per output)
• Field Wiring Arm: Catalog Number 1771-WA

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