gefran ADV20 series Quick Start-Up page 56

Fault
Fault Descriptions
Name
Over-current during
deceleration
Over-current during steady
state operation
Internal EEPROM can not be
programmed.
Internal EEPROM can not be
programmed.
Internal EEPROM can not be
read.
Internal EEPROM can not be
read.
U-phase error
V-phase error
W-phase error
OV or LV
Temperature sensor error
Ground fault
PID feedback signal error
Auto accel/decel failure
24 ADV20 QS, V1.02
Corrective Actions
1. Short-circuit at motor output: Check for possible
poor insulation at the output line.
2. Deceleration Time too short: Increase the
Deceleration Time.
3. AC motor drive output power is too small:
Replace the AC motor drive with the next
higher power model.
1. Short-circuit at motor output: Check for possible
poor insulation at the output line.
2. Sudden increase in motor loading: Check for
possible motor stall.
3. AC motor drive output power is too small:
Replace the AC motor drive with the next
higher power model.
Please contact the Gefran Technical Assistance.
Please contact the Gefran Technical Assistance.
1. Press RESET key to set all parameters to
factory setting.
2. Please contact the Gefran Technical Assistance.
1. Press RESET key to set all parameters to
factory setting.
2. Please contact the Gefran Technical Assistance.
Please contact the Gefran Technical Assistance.
When (one of) the output terminal(s) is grounded,
short circuit current is more than 50% of AC motor
drive rated current, the AC motor drive power
module may be damaged.
NOTE: The short circuit protection is provided
for AC motor drive protection, not for protection
of the user.
1. Check whether the IGBT power module is
damaged.
2. Check for possible poor insulation at the output
line.
1. Check parameter settings (Pr.10.01) and
AVI/ACI wiring.
2. Check for possible fault between system
response time and the PID feedback signal
detection time (Pr.10.08)
1. Check if the motor is suitable for operation by
AC motor drive.
2. Check if the regenerative energy is too large.
3. Load may have changed suddenly.
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