Adtech iMASTER – A1 Series - Ov (DC Link over Voltage)

A1-User’s Manual
１８４
9.2.6 ov (DC link Over Voltage)
1) Diagnostic flow chart
END
ov
Measure VFD
VDC
NO
NO
Read current value of trip history (03.01~03.72)
If using oscilloscope or clamp(hook) meter, read RMS current value
Increase 23.05 by 10
MAX 300 or use the
Breaking resistor
Else ov Ocurred
ov Occurred at VFD
Deceleration
VDC is more than -4:
780V or -2: 390V
Decrease 31.18 by
10% MIN 110% and
Increase 31.19 by
1sec MAX 10sec
Is it possible to use
the free run stop?
21.04 =1
(Free run Stop)
Replace
POWER PCB or
SMPS PCB
YES YES YES
NO
NO
YES