We are running a motor using the MCT8329A gate driver on our PCB.
The motor requires 48 V, max power of 180 W, and runs at a max of 80 k RPM.
We get a judder at start up and the nFAULT line flags up errors as follows (Yellow/upper trace: FG line; Green/lower trace: nFAULT line). The CONTROLLER_FAULT_STATUS register indicates a CBC current limit fault.
The EEPROM values are as follows:
'0x7F404004': '0111 1111 0100 0000 0100 0000 0000 0100': 'ISD_CONFIG'
'0x6C922507': '0110 1100 1001 0010 0010 0101 0000 0111': 'MOTOR_STARTUP1'
'0x02AD2100': '0000 0010 1010 1101 0010 0001 0000 0000': 'MOTOR_STARTUP2'
'0x0F61E600': '0000 1111 0110 0001 1110 0110 0000 0000': 'CLOSED_LOOP1'
'0x22B0243C': '0010 0010 1011 0000 0010 0100 0011 1100': 'CLOSED_LOOP2'
'0x34C92001': '0011 0100 1100 1001 0010 0000 0000 0001': 'CLOSED_LOOP3'
'0x001AC953': '0000 0000 0001 1010 1100 1001 0101 0011': 'CLOSED_LOOP4'
'0x30010001': '0011 0000 0000 0001 0000 0000 0000 0001': 'CONST_SPEED'
'0x2DE63FF0': '0010 1101 1110 0110 0011 1111 1111 0000': 'CONST_PWR'
'0x70784607': '0111 0000 0111 1000 0100 0110 0000 0111': 'FAULT_CONFIG1'
'0x7F85C00A': '0111 1111 1000 0101 1100 0000 0000 1010': 'FAULT_CONFIG2'
'0x24DB7200': '0010 0100 1101 1011 0111 0010 0000 0000': 'DEG_TWO_PH_PROFdegtwo'
'0x48DB6946': '0100 1000 1101 1011 0110 1001 0100 0110': 'DEG_THREE_PH_PRdegthree'
'0x0140A283': '0000 0001 0100 0000 1010 0010 1000 0011': 'REF_PROFILES1'
'0x128468CC': '0001 0010 1000 0100 0110 1000 1100 1100': 'REF_PROFILES2'
'0x47D7FFD4': '0100 0111 1101 0111 1111 1111 1101 0100': 'REF_PROFILES3'
'0x00028A0C': '0000 0000 0000 0010 1000 1010 0000 1100': 'REF_PROFILES4'
'0x4A11A300': '0100 1010 0001 0001 1010 0011 0000 0000': 'REF_PROFILES5'
'0x7FFF8000': '0111 1111 1111 1111 1000 0000 0000 0000': 'REF_PROFILES6'
'0x20600002': '0010 0000 0110 0000 0000 0000 0000 0010': 'PIN_CONFIG1'
'0x3E0020AA': '0011 1110 0000 0000 0010 0000 1010 1010': 'PIN_CONFIG2'
'0x27100008': '0010 0111 0001 0000 0000 0000 0000 1000': 'DEVICE_CONFIG'
'0x000600FC': '0000 0000 0000 0110 0000 0000 1111 1100': 'GD_CONFIG1'
'0x00000000': '0000 0000 0000 0000 0000 0000 0000 0000': 'GD_CONFIG2'
We have attempted to adjust various settings in the EEPROM, but are unable to get a smooth start up without errors. What settings would we require to change to achieve this?
Regards








