Delta CT2000 Series User Manual page 604

Chapter 18 Suggestions and Error Corrections for Standard AC Motor Drives CT2000 Series
Chapter 18 Suggestions and Error
Corrections for Standard AC Motor Drives
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 of f after 5 minu tes for ≦ 22kW models and 10 minutes for ≧
30kW models, please
measuring the voltage between + and -. The voltage between + and - should be less
than 25VDC.
 Only qualified personnel can inst all, wire and maintain drives. Please t ake 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 inst allation environment compl y with regulations witho ut abnormal
noise, vibration and smell.
18-1 Maintenance and Inspections
18-2 Greasy Dirt Problem
18-3 Fiber Dust Problem
18-4 Erosion Problem
18-5 Industrial Dust Problem
18-6 Wiring and Installation Problem
18-7 Multi-function Input/Output Terminals Problem
confirm that the cap
18-1
acitors have fully discharged by