Mitsubishi Electric MELSERVO-J4 Instruction Manual page 48

1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
Alarm No.: 30 Name: Regenerative error
Alarm content
Detail
Detail name
No.
30.1 Regeneration (1) The setting of the
heat error
(2) The regenerative
(3) The combination of
(4) The power supply
(5) The regenerative load
30.2 Regeneration (1) A detection circuit of
signal error
Permissible regenerative power of the built-in regenerative resistor or regenerative option is exceeded.
A regenerative transistor in the servo amplifier is malfunctioning.
Cause
Check the
regenerative resistor regenerative resistor
(regenerative option) is (regenerative option)
incorrect. and [Pr. PA02] setting.
Check if the
resistor (regenerative regenerative resistor
option) is not (regenerative option)
connected.
is connected
correctly.
Check if the
regenerative resistor regenerative resistor
(regenerative option) (regenerative option)
and servo amplifier is and the servo amplifier
incorrect. are connected in the
specified combination.
Check if the voltage of
voltage is high. the input power supply
is over the prescribed
value.
200 V class: 264 V AC
400 V class: 528 V AC
100 V class: 132 V AC
48 V DC setting: 70 V
DC
24 V DC setting: 50 V
DC
Check the
ratio exceeded 100%. regenerative load ratio
when alarm occurs.
Check if the
the servo amplifier is regenerative resistor
malfunctioning. (regenerative option)
is overheating.
Check method Check result
The setting value is
incorrect.
It is set correctly.
It is not connected
correctly.
It is connected
correctly.
The combination is
incorrect.
The combination is
correct.
It is higher than the
prescribed value.
It is at the
prescribed value or
lower.
It is 100% or more.
It is overheating
abnormally.
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Action Target
Set it correctly. [A]
[B]
[WB]
Check (2).
[RJ010]
[GF]
Connect it correctly.
Check (3).
Use them in the
correct combination.
Check (4).
Reduce the power
supply voltage.
Check (5).
Reduce the
frequency of
positioning. Increase
the deceleration time
constant. Reduce the
load. Use a
regenerative option if
it is not being used.
Review the
regenerative option
capacity.
For MR-J4-03A6(-
RJ) and MR-J4W2-
0303B6, check if the
main circuit power
supply voltage is 48
V DC even though
the setting is 24 V
DC.
Replace the servo
amplifier.