Troubleshooting; What This Chapter Contains; Indications Of Alarms And Faults; Fault Reset - IMO HD2 IP Series Instruction Manual

HD2 IP55 High-ingress Protection Series

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.


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 inverter 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
IMO office.

7.3 Fault reset

Users can reset the inverter via
the
inverter 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 inverter when the latest three faults occurred.

7.5 inverter faults and solutions

When fault occurred, process the fault as shown below.
1. When inverter fault occurred, confirm whether keypad display is improper? If yes, contact
IMO.
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

Fault
code
OUt1
Phase-U protection IGBT module is damaged;
Inverter unit Phase-V Misacts
OUt2

7 Troubleshooting

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".
STOP/RST
Fault type
Inverter unit
Acceleration is too fast;
protection interference: drive wires are Check whether there is strong
key on the keypad, digital inputs, or by cutting off
Possible cause
caused by Check drive wires;
-237-
Troubleshooting
Corrective measures
Increase acceleration time;
Replace the power unit;