Vacon NX - Page 86

Fault codes and software
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87
4
F2
Over
volt-
age
fault
S1 1=Power
2=Power
1
3=Power
2
1=Unit Information
from the ASIC
circuit. Voltage
level too high.
Signal: ASIC-
UTR.
1. Check the process
control.
2. Check the parame-
ters.
-Braking time too fast.
- Overvoltage controller
disabled.
3. Check the unit type,
does it include a brake
chopper and a resistor.
S2 1=Power 1=Unit U^2*t protec-
tion. In the unit
690V, DC-link
voltage has been
over 1100V too
long time. Over-
voltage protec-
tion of DC-link
capacitors.
1. Check the parame-
ters.
- Change longer Decel-
eration time
- Check if the brake
chopper is in use
2. Reboot the unit.
3. Defect apperas out-
side of the unit:
- Mains changes (voltage
spikes in supply volt-
age).
- Check the motor load
and dimensions.
- Break resistor too
small.
TABLE 16. System software fault codes
Code Sub
code
Module Sub
module
Explanation Fault mode