Chapter 6 Fault Codes and Descriptions |DD Series
6-1
Chapter 6 Fault Codes and Descriptions
6-1 Common Problems and Solutions
6-2 Maintenance and Inspectations
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.
Basic check-up items to detect if there were any abnormalities during operation are:
; Wait 5 seconds after a fault has been cleared before performing reset via keypad of
input terminal.
; Only qualified personnel can install, wire and maintain AC motor drives. Do not wear
any metallic accessory such as watches or rings when installing the drives. Please
use proper insulated tools only.
; Never reassemble internal components or wiring.
; Make sure that installation environment comply with regulations without abnormal
noise, vibration and smell.
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