2. TROUBLESHOOTING FOR MR-CV_POWER REGENERATION CONVERTER UNIT
2 - 2
2.3 Warning list
No.
Name
Warning
E9
Instantaneous power failure warning
EA
External forced stop warning
EB
Excessive regeneration warning
EC
Overload warning
EE
Cooling fan speed reduction warning
2.4 Remedies for alarms
No.
Name/Description
Cause
Check method
Check result
Action
61 Overcurrent
A current higher
than the
permissible
current was
applied to the
power
regeneration
converter unit.
(1) The combination of AC
reactor and power
regeneration converter
unit is incorrect.
Check if the correct
AC reactor is
connected.
It is incorrect.
Connect the correct
AC reactor.
It is correct.
Check (2).
(2) The current exceeds
the instantaneous
maximum rating of the
power regeneration
converter unit.
Check if the maximum
value of total output
current of the servo
motor connected to
the power
regeneration converter
unit does not exceed
the instantaneous
maximum rating of the
power regeneration
converter unit.
It is larger than the
instantaneous
maximum rating of
the power
regeneration
converter unit.
Check operation
pattern.
Or increase the
capacity of the
power regeneration
converter unit.
It is lower than or
equal to the
instantaneous
maximum rating of
the power
regeneration
converter unit.
Check (3).
(3) The power supply
capacity is insufficient.
Check the power
supply capacity.
It is insufficient.
Check the power
supply capacity.
It is sufficient.
Check (4).
(4) The phases of the input
power supply voltage
are unbalanced.
Check if the potential
difference of the input
power supply voltage
is less than the
prescribed value.
200 V class: 10 V
400 V class: 20 V
It is equal to or
larger than the
prescribed value.
Improve the balance
of power supply
phases.
It is less than the
prescribed value.
Check (5).
(5) Something near the
device caused it.
Check the noise,
grounding, etc.
It has a failure.
Take
countermeasures
against its cause.
It has no failure.
Check (6).
(6)
The
power
regeneration converter
unit is malfunctioning.
Replace the power
regeneration converter
unit, and then check
the repeatability.
It is not repeatable.
Replace the power
regeneration
converter unit.
Содержание MELSERVO MR-J4-B-RJ Series
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