1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
1 - 41
Alarm No.: 30
Name: Regenerative error
Alarm content
Permissible regenerative power of the built-in regenerative resistor or regenerative option is exceeded.
A regenerative transistor in the servo amplifier is malfunctioning.
Detail
No.
Detail name
Cause
Check method
Check result
Action
Target
30.1 Regeneration
heat error
(1) The setting of the
regenerative resistor
(regenerative option) is
incorrect.
Check the
regenerative resistor
(regenerative option)
and [Pr. PA02] setting.
The setting value is
incorrect.
Set it correctly.
[A]
[B]
[WB]
[RJ010]
[GF]
It is set correctly.
Check (2).
(2)
The
regenerative
resistor (regenerative
option) is not
connected.
Check if the
regenerative resistor
(regenerative option)
is connected
correctly.
It is not connected
correctly.
Connect it correctly.
It is connected
correctly.
Check (3).
(3) The combination of
regenerative resistor
(regenerative option)
and servo amplifier is
incorrect.
Check if the
regenerative resistor
(regenerative option)
and the servo amplifier
are connected in the
specified combination.
The combination is
incorrect.
Use them in the
correct combination.
The combination is
correct.
Check (4).
(4) The power supply
voltage is high.
Check if the voltage of
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
It is higher than the
prescribed value.
Reduce the power
supply voltage.
It is at the
prescribed value or
lower.
Check (5).
(5) The regenerative load
ratio exceeded 100%.
Check the
regenerative load ratio
when alarm occurs.
It is 100% or more.
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.
30.2 Regeneration
signal error
(1) A detection circuit of
the servo amplifier is
malfunctioning.
Check if the
regenerative resistor
(regenerative option)
is overheating.
It is overheating
abnormally.
Replace the servo
amplifier.
Содержание MELSERVO MR-J4-B-RJ Series
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