10. Troubleshooting
- 277 -
11
Operating Panel Display
Fault Name
Overvoltage at constant speed
Cause
Possible Solution
The overvoltage stall prevention
parameters are set improperly.
Ensure that the voltage limit function is enabled (F3-23 = 1).
The setting of voltage limit (F3-22) is too large. Adjust it
between 700 V and 770 V.
The setting of frequency gain for voltage limit (F3-24) is too
small. Adjust it between 30 and 50.
The setting of frequency rise threshold during voltage limit (F3-
26) is too small. Adjust it between 5 Hz and 20 Hz.
An external force drives motor during
running.
Cancel the external force or install a braking resistor
Operating Panel Display
Fault Name
Pre-charge resistor fault
Cause
Possible Solution
%XVYROWDJHÀXFWXDWHVDURXQG
undervoltage threshold continuously.
Contact the agent or Inovance.
Operating Panel Display
Fault Name
Undervoltage
Cause
Possible Solution
Instantaneous power failure occurs
(QDEOHWKHSRZHUGLSULGHWKURXJKIXQFWLRQ)
The AC drive's input voltage is not
within the permissible range.
Adjust the voltage to normal range.
The bus voltage is abnormal.
Contact the agent or Inovance.
7KHUHFWL¿HUEULGJHWKHEXIIHU
resistor, the drive board or the
control board are abnormal.
Contact the agent or Inovance.
Operating Panel Display
Fault Name
AC drive overload
Cause
Possible Solution
Load is too heavy or locked-rotor
occurs on motor.
Reduce load or check motor and mechanical conditions.
The AC drive power class is small.
Replace a drive of larger power class.
Operating Panel Display
Fault Name
Motor overload
Cause
Possible Solution
F9-01 (Motor overload protection
gain) is set improperly.
Set F9-01 correctly.
Load is too heavy or locked-rotor
occurs on motor.
Reduce load or check motor and mechanical conditions.
Summary of Contents for MD290 Series
Page 1: ......
Page 79: ...3 Electrical Installation 78 3 ...
Page 80: ...4 Operating Panel Keypad Display 4 1 Introduction 80 4 2 Inbuilt LED Operating Panel 80 ...
Page 92: ...5 Quick Setup 5 1 Get Familiar With Operating Panel 92 5 2 Setup Flowchart 93 ...
Page 227: ...7 Interfaces and Communication 226 7 ...
Page 285: ...10 Troubleshooting 284 11 ...
Page 349: ......
Page 350: ......