Fault Detection - LiteOn EVO600021S0D2E20F User Manual

8.2 Fault Detection

Keypad
Fault Name
Display
GF Ground Fault
Overvoltage
(Acceleration,
Deceleration and
Constant Speed)
oVA,
oVd, The main circuit DC
oVC voltage exceeded the
overvoltage
detection level
200V class: 410V
400 V class: 820 V
Table 8.2 Fault Displays, Causes, and Possible Solution
Output power cable is
damaged
9
Cause
Check and replace output power
cable
1. Increase the deceleration time
settings (C1-01 and C1-03)
»Install a braking unit
»Set P3-03 (
Deceleration)
(Enabled)(default is 1)
2. Confirm if overvoltage alarm
oVA or oVC was triggered during
sudden drive acceleration.
»Increase the acceleration time
»Use S-curve deceleration and
acceleration times and increase
the value set to C2-01 ( S-curve
at acceleration end )
3.Thyristor convertor and phase
advancing capacitor using the
same input power supply might
cause a voltage surge
4. Check the motor power cable,
relay terminals and motor
terminal box
» Correct grounding shorts and
reapply power
5. Adjust parameter settings for
Speed Search (group b3)
»Proceed Auto-Tuning for
line-to-line resistance
6. Check the voltage
»Lower drive input power
voltage within the range listed in
the drive specifications
7. Check the wiring of the
braking resistor and braking unit
»Correct the wiring
159
Possible Solution
Stall Prevention during
to 1