ABB REF542plus control and monitoring interface Digital Input/Output Module No output signal if L-

No output signal if L- supply is interrupted

Fault Type: Overtracking scale

Depth excludes carrier and DIN-rail height

2500 V DC (for 1 minute)

designed for high-performance control with flexible expansion options

ABB REF542plus control and monitoring interface Digital Input/Output Module No output signal if L-ABB REF542plus HMI Unit General Information The ABB REF542plus HMI Unit with part number 1VCR007346 G0004 is a Human Machine Interface (HMI) designed for the REF542plus series of protection and control relays. It serves as a local control and monitoring interface, providing operators with a user friendly display and keypad to interact with the relay system directly, without requiring a separate computer. This unit is essential for power distribution