TECDrive20-EU Series Inverter Fault tracking
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phase 230V AC/2A power surge (L+ to R and N to S or T). All DC bus capacitors charge at the
same time because there is one rectifier.
High-voltage inverter needs enough voltage (for example, 400V) during charging. The small
capacitor power (2A is enough) can be used because the capacitor nearly does not need
current when charging.
6.1.3.2 Electrolytic capacitor replacement
Read and follow the instructions in Chapter 1 "Safety precautions".
Ignoring the instructions may cause physical injury or death, or damage to
the equipment.
The electrolytic capacitor of the inverter must be replaced if it has been used for more than
35,000 hours. For details about the replacement, contact the local TEC office or dial our
national service hotline (400-700-9997).
6.1.4 Power cable
Read and follow the instructions in Chapter 1 "Safety precautions".
Ignoring the instructions may cause physical injury or death, or damage to
the equipment.
1. Stop the drive and disconnect it from the power line. Wait for at least the time designated on
the inverter.
2. Check the tightness of the power cable connections.
3. Restore power.
6.2 Fault solution
Only qualified electricians are allowed to maintain the inverter. Read the
safety instructions in Chapter 1 "Safety precautions" before working on the
inverter.
6.2.1 Indications of alarms and faults
Fault is indicated by LEDs. See Chapter 4 "Keypad operation". When TRIP light is on, an
alarm or fault message on the panel display indicates abnormal inverter state. Using the
information given in this chapter, most alarm and fault cause can be identified and corrected. If
not, contact with the TEC office.
6.2.2 Fault reset
The inverter can be reset by pressing the keypad key STOP/RST, through digital input, or by
switching the power light. When the fault has been removed, the motor can be restarted.
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