Hyundai 12ESH Operation Manual page 31

Diagnosis of 1207A Controller and LED Fault Table
1，2 HWFALLSAFE
1，3 M-FAULT
1，4 SRO
2，1． THROTTLE FAULT1
2，2 BB WIRING CHECK
2，3 HP0
2，4 THROTTLE FAULT2
3，1 CON70RVROC
27
Hardware auto-protection
failure
M-output short circuit
SRO function fault
5000 ohm 一 0 or sliding arm
fault
Connecting wire fault of
emergency reverse
HPD function time sequence
error
Low leg wire disconnected
or short circuited
Driver output overcurrent
1．Controller damaged
1．M﹣output short circuit to ground
2．Direction contactor not close
3．Direction contactor closes slowly
4．Short circuit of inner motor to ground
1．False sequence of KSI input, brake input and
direction input
2．SRO function selection error
3．Brake or direction switch open circuit
4．Sequence delay time too short
1. Speed governor input wire open circuit
2．Governor input wire short circuited to B+ or
ground
3．Speed governor damaged
4．Speed governor type selection error
1．Key open circuit
2．Key check wire open circuit
1．False input time sequence of KSI input, brake
input and governor input
2．False selection of HP0 function type
3．False adjustment of governor potentiometer
1．Low leg wire open circuit
2．Low leg wire short circuit
3．False selection of governor type
1．Direction contactor coil short circuit
2，Shunt excitation short circuited