Fault Solution - TECHTOP TD20 Series Product Manual

TD20 Series VFD
Time
Storing time less than 1 year
Storing time 1-2 years
Storing time 2-3 years
Storing time more than 3
years
The method of using power surge to charge for the VFD:
The right selection of power surge depends on the supply power of the VFD. Single phase 220V AC/2A
power surge applied to the VFD with single/three-phase 220V AC as its input voltage. The VFD with
single/three-phase 220V AC as its input voltage can apply Single phase 220V 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 VFD needs enough voltage (for example, 460V) during charging. The small capacitor
power (2A is enough) can be used because the capacitor nearly does not need current when charging.
Change electrolytic capacitors
•
Read and follow the instructions in chapter Safety Precautions. Ignoring the
instructions may cause physical injury or death, or damage to the equipment.
Change electrolytic capacitors if the working hours of electrolytic capacitors in the VFD are above 35000.
Please contact with the local TECHTOP offices for detailed operation.
6.1.3 Power cable
•
Read and follow the instructions in chapter Safety Precautions. Ignoring the
instructions may cause physical injury or death, or damage to the equipment.
1. Stop the VFD and disconnect it from the power line. Wait for at least the time designated on the VFD.
2. Check the tightness of the power cable connections.
3. Restore power.

6.2 Fault solution

•
Only qualified electricians are allowed to maintain the VFD. Read the safety
instructions in chapter Safety precautions before working on the VFD.
6.2.1 Alarm and fault indications
Fault is indicated by LEDs. See Operation Procedure. When TRIP light is on, an alarm or fault
message on the panel display indicates abnormal VFD state. Using the information given in this chapter,
most alarm and fault cause can be identified and corrected. If not, contact with the TECHTOP CANADA
INC. office.
Operation without charging
Connect with the power for 1 hour before first ON command
Use power surge to charge for the VFD
• Add 25% rated voltage for 30 minutes
• Add 50% rated voltage for 30 minutes
• Add 75% rated voltage for 30 minutes
• Add 100% rated voltage for 30 minutes
Use power surge to charge for the VFD
• Add 25% rated voltage for 2 hours
• Add 50% rated voltage for 2 hours
• Add 75% rated voltage for 2 hours
• Add 100% rated voltage for 2 hours
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Operational principle
Fault Tracking