Sako SKI780 - Chapter 7 Maintenance and Troubleshooting; 7.1 Fault Description; 7.2 Troubleshooting List

Chapter 7 Maintenance and Troubleshooting
7.1 Fault Description
If fault happens during the operation of the SKI780 inverter system, the inverter will
stop the output immediately, and the inverter fault relay will make contact action.
The inverter panel displays the fault code, the corresponding fault types and common
solutions are shown in the table below. List in the form for reference only, please do
not repair or modify. If unable to troubleshoot, please seek technical support from our
company or product agent.
7.2 Troubleshooting List
Fault Name Display Possible Causes Solutions
Inverter
Unit ErrO1
Protection
1: The output circuit is grounded
or short circuited.
2: The connecting cable of the
motor Is too long.
3: The IGBT overheats.
4: The internal connections
become loose.
5: The main control board ts
faulty.
6: The drive board is faulty.
T: The AC drive IGBT is faulty.
1: Eliminate external faults.
2: Install a reactor or an
output filter.
3: Check the air filter and
the cooling fan.
4. Connect all cables
properly.
5: Contact technical
support.
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