1771-SN

Overview

The Allen-Bradley 1771-SN is a Sub I/O Scanner module for PLC-5 systems, facilitating communication with remote I/O adapters over long cable runs.

Module Specifications

• Module location: 1771-A1B to A4B or later I/O chassis, 1771-AM1 and AM2 I/O chassis

• Data transmission rate: 57.6k bits/s (10,000 ft), 115.2k bits/s (5,000 ft)

• Interconnect cable: 1770-CD or equivalent

• Backplane current: 1.2 A

• Power dissipation: 7 W max @ 1.2 A

• Thermal dissipation: 24 BTU/hr max @ 1.2 A

• Keying positions: Between 2–4, 24–26

Environmental Conditions

• Operating temperature: 0–60 °C

• Storage temperature: -40–85 °C

• Relative humidity: 5–95% (non-condensing)

System Compatibility

• Supports PLC-2 rack addresses 1–7

• Supports up to 16 total adapters

• Does not support complementary I/O

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