Inovance IS620P Series - Er.400: Main Circuit Overvoltage

Chapter 6 Troubleshooting IS620P User Manual
- 134 -
18. Er.400: Main circuit overvoltage
Cause:
The DC bus voltage between P and
-
exceeds the overvoltage level.
•
220 V drive: normal value: 310 V, overvoltage level: 420 V
•
380 V drive: normal level: 540 V, overvoltage level: 760 V
Cause Conrming Method Corrective Action
1.The main circuit input
voltage is too high
•
Check the power input specication
of the drive. Measure the RST
input voltage on the servo drive
side and check whether the input
voltage complies with the following
specication.
220 V drive:
Effective value: 220 to 240 V
Allowed error: -10% to 10% (198 to
264 V)
380 V drive:
Effective value: 380 to 440 V
Allowed error: -10% to 10% (342 to
484 V)
Replace the power supply
or adjust the power voltage
according to the specication
on the left.
2. The power supply is
instable or affected by the
lightning strike.
•
Check whether the power supply is
instable, affected by the lightning
strike or satises the preceding
specication.
Connect a surge suppressor
and then connect the power
supply. If the fault remains,
replace the servo drive.
3. The regen resistor
fails.
•
If internal regen resistor is used
(H02-25 = 0), check whether
P and D are connected with a
cable reliably. If yes, measure the
resistance between C and D.
•
If external regen resistor is used
(H02-25 = 1/2), measure the
resistance between P and C.
•
For the regen resistor specication,
refer to section 1.4 Regen Resistor
Specications.
•
If the resistance is ∞, wire
breaking occurs.
•
If internal regen resistor is
used and the resistance
is 0, use external regen
resistor (H02-25 = 1/2) and
remove the cable between
P and D. Select external
regen resistor of the same
resistance and power as
internal regen resistor.
•
If external regen resistor is
used, connect a new regen
resistor between P and C.
•
Make H02-26(Power of
external regen resistor)
and H02-27 (Resistance
of external regen resistor)
consistent with the used
external regen resistor
specication.