Catalog Number:

1775-KA

Physical Interface Connectors:

4 x 50-pin connectors

Chassis Slot Requirement:

1 Single Slot

Nominal System Operating Voltage:

115 V AC (at 60 Hz) / 230 V AC (at 50 Hz)

Max Power Consumption:

3.5 Watts

Maximum Backplane Current Load:

6.0 A maximum from ±5V DC; 20mA maximum from ±15V DC

The Allen-Bradley 1775-KA is a legacy Communication Adapter Module developed for the PLC-3 system architecture. This hardware component functions by occupying a single slot inside either a PLC-3 main processor chassis or an expansion chassis. Its essential role is to establish reliable, high-speed data transfers between the host PLC-3 controller and industrial communication networks, primarily Allen-Bradley's Data Highway (DH) network. It features four 50-pin physical connectors that hook directly into the system's expansion bus (EBUS) to bridge data pathways. When configured alongside asynchronous interfaces (like the 1770-KF2 module), it enables standard RS-232-C or RS-422-A intelligent computing devices to communicate flawlessly with the plant-floor network.

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