1771-IMD/B

Overview

The 1771-IMD/B from Allen-Bradley is an AC (220V) input module designed for precise signal monitoring in 1771 I/O chassis systems.

Input Specifications

• Inputs per Module: 16

• Module Location: 1771-A1B, -A2B, -A3B, -A3B1, -A4B I/O chassis

• Nominal Input Voltage: 220V AC @ 50/60Hz

• Nominal Input Current: 10.4 mA

• On-state Voltage Range: 184V to 250V AC, 166V to 230V DC

• Minimum On-state Current: 8.7 mA at 184V AC, 0.43 mA at 166V DC

• Maximum Off-state Voltage: 92V AC or DC

• Maximum Off-state Current: 3 mA at 92V AC, 0.25 mA at 92V DC, 0.43 mA at 166V DC

Signal Characteristics

• Input Impedance: 0.15 µF (21.2 kΩ at 50 Hz) in parallel with 360 kΩ

• Input Signal Delay: On-state: 15 ± 8 ms; Off-state: 172 ± 56 ms

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

Power and Backplane

• Power Dissipation: 5.8 W max., 1.3 W min.

• Thermal Dissipation: 19.8 BTU/hr max., 4.5 BTU/hr min.

• Backplane Current: 250 mA @ 5 V DC ±5%

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% (non-condensing)

Wiring and Mounting

• Conductors Wire Size: 14 gauge stranded max, 3/64 inch insulation max

• Category: 11

• Keying: Between 2 and 4, Between 12 and 14

• Field Wiring Arm Catalog Number: 1771-WH

• Wiring Arm Screw Torque: 7–9 inch-pounds

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