electronics Module VMPA2-FB-EMS-4 For valve terminal MPA-S with fieldbus Connection for 4 solenoid coils, not electrically isolated. Diagnosis=- Undervoltage of valves, Max. number of valve Positions=2, Max. number of solenoid coils=4, Intrinsic current consumption at load voltage=3 mA, Intrinsic current consumption at operating voltage=8 mA