Appendix F Suggestions and Fault Corrections for Standard AC Motor Drives
F-1
Appendix F: Suggestions and Fault Corrections for
Standard AC Motor Drives
F.1 Maintenance and Inspections
F.2 Greasy Dirt Problem
F.3 Fiber Dust Problem
F.4 Erosion Problem
F.5 Industrial Dust Problem
F.6 Wiring and Installation Problem
F.7 Multi-function Input/Output Terminals Problem
The AC motor drive has a comprehensive fault diagnostic system that includes several different
alarms and fault messages. Once a fault is detected, the corresponding protective functions will be
activated. The following faults are displayed as shown on the AC motor drive digital keypad display.
The six most recent faults can be read from the digital keypad or communication.
The AC motor drive is made up by numerous components, such as electronic components, including
IC, resistor, capacity, transistor, and cooling fan, relay, etc. These components can’t be used
permanently. They have limited-life even under normal operation. Preventive maintenance is
required to operate this AC motor drive in its optimal condition, and to ensure a long life.
Check your AC motor drive regularly to ensure there are no abnormalities during operation and
follows the precautions:
Wait 5 seconds after a fault has been cleared before performing reset via
keypad of input terminal.
When the power is off after 5 minutes for
≦
22kW models and 10 minutes for
≧
30kW models, please confirm that the capacitors have fully discharged by
measuring the voltage b and -. The voltage b and - should
be less than 25VDC.
Only qualified personnel can install, wire and maintain drives. Please take off
any metal objects, such as watches and rings, before operation. And only
insulated tools are allowed.
Never reassemble internal components or wiring.
Make sure that installation environment comply with regulations without
abnormal noise, vibration and smell.
