Adtech iMASTER – A1 Series - 9 Checking and Trouble Shooting; Error Code; Error Code List

A1-User’s Manual
１７７
9. Checking and Trouble shooting
9.1 Error code
9.1.1 Error code list
Name
Cause(s)
Error
Code
Over Current
When the VFD output current exceeds the rated current by more than
approximately 200% during the motor locked or reduced in speed.
Protection circuit activates, halting VFD output.
oC
Short Circuit
The VFD output was short-circuited.
This condition causes excessive current for the VFD,
so the VFD output is turned off.
oC or
SC
Motor Overload
When the VFD output current causes the motor to overload,
the electronic thermal trip in the VFD cuts off the VFD output.
EtH
VFD Overload
The power IGBT is protected from over heat. The operating time of VFD is
1 minute with 150% load of HD or 120% load of ND.
The operating time is changed depending on carrier frequency, load,
ambient temperature and power rating.
IoLt
DC link
Over Voltage
If regenerative energy from the motor or the main power supply voltage
is high, the protective circuit activates to cut off the VFD output when the
voltage of DC link exceeds the specification
ov
DC link
Under Voltage
When input voltage drops below the low-voltage detection level,
the control circuit does not function normally.
So when the input voltage is below the specification, the VFD
output is cut off.
Lv
EEPROM Error
The VFD output is cut off when EEPROM in the VFD has an error
due to external noise, excessive temperature rise, or other factor
E2PE
Communication
Error
Communication error between VFD and its operator.
If the Reset signal persists for more than 4 seconds, it will occur.
CE
IGBT Over
Temperature
When the temperature in the main circuit increases due to cooling fan
stop, the VFD output is cut off.
(only for the model type with cooling fan)
ot