Adtech iMASTER – A1 Series - Lv (DC Link under Voltage)

A1-User’s Manual
１８５
9.2.7 Lv (DC link Under Voltage)
1) Diagnostic flow chart
Lv
VFD
Operate
Measure Vdc
Read current value of trip history (03.01 ~ 03.72)
If using DMM, read from P,N terminal
Vdc>400V(-4)
200V(-2)
Momentary
Power
Fail(16ms)
31.07 =2(Restart
mode selection)
31.08 =3
H/W check
Increase Vin
Check power capacity
END
Yes
Yes
No No