If the vfd has no display pls check the keypad if it is properly connected and check if there is power going to the input supply of the vfd which is R S T . If there is a supply power or voltage entering the R.S.T. and there is no display in the keypad the vfd is needs to be repair , two possible cause of GFF with the VFD one is the insulator of the motor is not good second some parts of the vfd is already defective and need to b replace.
Hi Sir, can I check if RA/RC and MO1/MCM is a dry contact? Our BMS supplier need to monitor on/off and trip status and they need voltage free feedback from the VFD. Pls advise?
MCM Common MO1 , MO2 and MO3 is a dry contact Output. Program 03-01 to 01 used MO1 as output for Ac drive Operational VFD status for Run / Stop. Program 03-02 to 08 used MO2 as output for trip status of the VFD. This Parameter works for VFD B Series Hope you find this used full . Good day !!!
