valve control module for activating Ex i Ex i solenoid valves in potentially explosive atmospheres logic input voltage 22.6 V in idle state, current limit of 48 mA cable transparency error, output error messages, up to SIL 3 IEC 61508, screw connection - mACX MCR-EX-SD-SL-23-48 LFD. Ref .: 2924867. Phoenix Contact.