1771-OBD/C

Product Overview

1771-OBD/C is a 16-point DC output module from Allen-Bradley, designed for the 1771 I/O Series C chassis.

Output Performance

• Voltage range: 10–60 V DC

• Minimum current: 2.5 mA per output

• Maximum current: 2 A per output, 8 A per module

• Surge current: 4 A per output for 10 ms (repeatable every 2 s); 25 A per module for 10 ms

• Off-state leakage: 0.5 mA per output @ 24 V DC, 25°C

• On-state voltage drop: 0.3 V at 2 A

• Signal delay: 1.0 ms on/off

Power & Dissipation

• Power rating: 3 W per output

• Total power dissipation: 14 W max, 2 W min

• Thermal dissipation: 47.8 BTU/hr max, 6.9 BTU/hr min

• Backplane current: 400 mA @ 5 V DC +5%

Protection & Isolation

• Isolation voltage: 1500 V AC RMS

• Fuse: 10 A, 250 V rectifier fuse

• Field wiring arm: standard or optional fused versions (Cat. 1771-WH, 1771-WHF 3A, 1771-WHFB 1.5A)

Environmental & Wiring

• Operating temperature: 0–60°C (32–140°F)

• Storage temperature: -40–85°C (-40–185°F)

• Humidity: 5–95% non-condensing

• Wire size: 14 AWG stranded max, insulation max 1.2 mm

• Wiring arm screw torque: 7–9 in•lb

• Keying: Between positions 10–12 and 22–24

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