Inovance IS620P Series - Er.920: Regen Resistor Overload

Chapter 6 Troubleshooting IS620P User Manual
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6. Er.920: Regen resistor overload
Cause:
•
The accumulative heat of regen resistor is greater than the setting value.
Cause Conrming Method Corrective Action
1. The cable of the
external regen resistor
is in poor connection,
becomes loose or
breaks.
•
Disconnect the external regen
resistor and measure whether
the resistance of the regen
resistor is s ∞.
•
Measure whether the resistance
between P and C is∞.
Replace with a new external regen
resistor and measure its resistance.
If the resistance is consistent
with the nominal value, connect it
between P and C.
Select a normal cable and connect it
between P and C.
2. The jumper across
terminals P and D is
shorted or disconnected
when the internal regen
resistor is used.
•
Measure whether the resistance
between P and D.
Select a normal cable and connect it
between P and D.
3. The setting of H02-
25 is incorrect when the
external regen resistor
is used.
•
View the setting value of H02-
25.
•
Measure the resistance of
the external regen resistor
connected between P and C.
Check whether the resistance
is too large by comparing it with
the regen resistor specication
table in section 1.4..
•
Check whether the value of
H02-27 is greater than the
resistance of the external regen
resistor connected between P
and C.
Set H02-25 correctly based on
section 4.2.
H02-25 = 1 (external regen resistor
used, natural cooling)
H02-25 = 2 (external regen resistor
used, forced air cooling)
4. The resistance of the
selected external regen
resistor is too large
when an external regen
resistor is used.
Select a proper regen resistor
according to section 1.4 Regen
Resistor Specications..
5. H02-27 (resistance of
external regen resistor)
is larger than the
resistance of actually
connected external
regen resistor.
Set H02-27 (resistance of external
regen resistor) consistent with the
resistance of the selected external
regen resistor.
6. The input voltage of
the main circuit exceeds
the specication.
•
Check whether the input voltage
of the main circuit on the servo
drive side 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.