Goodrive350 IP55 High-ingress Protection Series VFD
Troubleshooting
-246-
7 Troubleshooting
7.1 What this chapter contains
The chapter tells users how to reset faults and check faults history. A complete list of alarms
and fault information as well as possible causes and corrective measures are presented in this
chapter.
Only well-trained and qualified professionals are allowed to carry out the work
described in this chapter. Operations should be carried out according to the
instructions presented in 1 "Safety Precautions".
7.2 Indications of alarms and faults
The fault is indicated by indicators (refer to the "Keypad operation process"). When TRIP
indicator is on, the alarm or fault code displayed in the keypad indicates the VFD is in
exception state. This chapter covers most of the alarms and faults, and their possible causes
and corrective measures, if users cannot figure out the alarm or fault causes, contact local
INVT office.
7.3 Fault reset
Users can reset the VFD via STOP/RST key on the keypad, digital inputs, or by cutting off the
VFD power. After faults are removed, the motor can be start again.
7.4 Fault history
P07.27
–P07.32 record the six latest fault types; P07.33–P07.40, P07.41–P07.48, and P07.49–
P07.56 record the running data of the VFD when the latest three faults occurred.
7.5 VFD faults and solutions
When fault occurred, process the fault as shown below.
1. When VFD fault occurred, confirm whether keypad display is improper? If yes, contact
INVT;
2. If keypad works properly, check the function codes in P07 group to confirm the
corresponding fault record parameters, and determine the real state when current fault
occurred through parameters;
3. Check the table below to see whether corresponding exception states exist based on the
corresponding corrective measures;
4. Rule out the faults or ask for help from professionals;
5. After confirming faults are removed, reset the fault and start running.
7.5.1 Details of faults and solutions
Note:
The numbers enclosed in square brackets such as [1], [2] and [3] in the
Fault type
column in the following table indicate the VFD fault type codes read through communication.
Fault
code
Fault type
Possible cause
Corrective measures
OUt1
[1] Inverter unit U phase
protection
Acceleration is too fast;
IGBT module is damaged;
Increase acceleration time;
Replace the power unit;
