1771-ICD

Overview

1771-ICD is a DC (20–60V) input module from Allen-Bradley Rockwell. It supports 16 isolated DC inputs for reliable industrial control performance.

Electrical Specifications

• Input Voltage Range: 20–60V DC

• Minimum Input Current: 2mA at 20V DC; 6mA at 60V DC

• Minimum Off-state Current: 1.2mA at 12V DC

• Maximum Off-state Voltage: 12V DC

• Minimum On-state Voltage: 20V DC

• Input Impedance: 10KΩ maximum

Signal Timing

• Low-to-High Delay: 6ms (+2ms)

• High-to-Low Delay: 20ms (+1ms)

Power Characteristics

• Power Dissipation: 5.9W maximum; 1.3W minimum

• Thermal Dissipation: 19.93 BTU/hr maximum; 4.3 BTU/hr minimum

• Backplane Current: 250mA at +5V DC (+5%)

Isolation and Safety

• Isolation Voltage: Meets or exceeds UL 508 and CSA C22.2 No. 142 standards

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: 5–95% non-condensing

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