Promac SY-350V Operating Instructions Manual page 25

Fault Name Fault Descriptions
Internal EEPROM can not be
read.
U-phase error
V- phase error
W- phase error
OV or LV
Temperature sensor
error
Ground fault
Auto accel/decel failure
Communication error
Software protection failure
Analog signal error
PID feedback signal error
Phase loss
Corrective Actions
1. Press RESET key to set all
parameters to factory.
2. Return to factory.
Return to factory.
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 oft he user.
1. Check whether the IGBT power module
is damaged.
2. Check for possible poor insulation at the
output line.
1. Check if the motor is suitable for
operation by AC motor drive.
2. Check if regenerative energy is too
large.
3. Load may have changed suddenly.
1. Check the RS485 connection
Between the AC motor drive and
RS485 master for loose wires and wiring to
correct pins.
2. Check if the communication protocol,
address, transmission speed, etc. are
properly set.
3. Use the corret checksum calculation.
4. Please refer to group 9 in the chapter
5 detail information.
Return to the factory.
Check the wiring of ACI
1. Check parameter settings
(Pr.1 0.01) and AVI/ACI wiring.
2. Check for possible fault between system
response and the PID- feedback signal
detection time (Pr.1 0.08)
Check input phase wiring for loose contacts.
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