Chziri ZVF200-M User Manual page 64

Chapter 7 Common Fault & Anomalies and Solutions
Fault Descriptions
Fault Name
Over-current during
acceleration:
1. Short-circuit at motor
output.
2. Torque boost too high.
3. Acceleration time too short.
4. AC drive output capacity is
too small.
Over-current during deceleration:
1. Short-circuit at motor output.
2. Deceleration time too short.
3. AC drive output capacity is
too small.
Over-current during steady
state operation:
1. Short-circuit at motor output.
2. Sudden increase in motor
loading.
3. AC drive output capacity is
too small.
Internal memory IC can not
be programmed.
Internal memory IC can not
be read.
The external terminal EF-
GND goes from OFF to ON.
Auto accel/decel failure
-122-
Corrective Actions
1. Check for possible poor insulation
at the output line.
2. Decrease the torque boost setting in
P54.
3. Increase the acceleration time.
4. Replace with the AC drive with one
that has a higher output capacity
(next HP size).
1. Check for possible poor insulation at
the output line.
2. Increase the deceleration time.
3. Replace with the AC drive with one
that has a higher output capacity
(next HP size).
1. Check for possible poor insulation at
the output line.
2. Check for possible motor stall.
3. Replace with the AC drive with one
that has a higher output capacity
(next HP size).
Check whether the input voltage falls
within the rated AC drive input voltage
then Switch the AC drive back on.
1. Check the connections between the
main control board and the power
board.
2. Reset drive to factory defaults.
When external terminal EF-GND is
closed, the output will be turned off
(under N.O. E.F.).
Don't use the function of auto
acceleration/deceleration.
Chapter 7 Common Fault & Anomalies and Solutions
Fault Descriptions
Fault Name
Ground fault :
The AC drive output is abnormal.
When the output terminal is
grounded (short circuit current is
50% more than the AC drive rated
current), the AC drive power
module may be damaged. The
short circuit protection is
provided for AC drive
protection, not user protection.
Communication Error
Please refer to P92.
External Base Block.
AC drive output is turned off.
OC hardware error
CC (current clamp)
OV hardware error
GFF hardware error
OV or LV
Current sensor error
U-phase error
W-phase error
-123-
Corrective Actions
Ground fault :
1. Check whether the IGBT power
module is damaged.
2. Check for possible poor insulation
at the output line.
1. Check the connection between the
AC drive and computer for loose
wires.
2. Check if the communication protocol
is properly set.
1. When the external input terminal
(baseblock) is active, the AC drive
output will be turned off.
2. Disable this connection and the AC
drive will begin to work again.
Return to the factory.
Return to the factory.