1785-BEM

Overview

1785-BEM is an Allen-Bradley PLC-5 backup communication module designed for reliable data exchange and redundancy within industrial automation systems.

Installation

• Module Location: 1771 I/O chassis (local)

• Wiring Arm: 1771-WG

• Keying Positions: Between 8–10 and 34–36

Electrical Ratings

• Backplane Current (BCM): 1.0 A @ 5V DC

• Backplane Current (BEM): 0.6 A @ 5V DC

• Customer Relay: 0.25 A @ 24V DC (resistive)

• Communication Speed: HSSL at 1.2 Megabaud

Environmental Conditions

• Operating Temperature: 0° to 60°C (32° to 140°F)

• Storage Temperature: -40° to 85°C (-40° to 185°F)

• Relative Humidity: 5% to 95%, non-condensing

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