Mitsubishi Electric MELSERVO-J3W Series Instruction Manual page 451

15. MR-J3W-0303BN6 SERVO AMPLIFIER
Alarm No.: 30 Name: Regenerative error
Alarm content
Display Detail name
30.1 Regeneration 1) The setting of regenerative
heat error
2) Power supply voltage high.
3) The regenerative load ratio
Permissible regenerative power of regenerative resistor was exceeded.
A regenerative transistor in the servo amplifier is malfunctioning.
Cause
resistor is incorrect.
has been over 100 .
Stop system: All axes
Check method
Check the regenerative The setting value is
resistor and parameter incorrect.
No.PA02 setting.
It is set correctly.
Check the input power The voltage is
supply voltage. 70VDC or higher
when 48VDC is set
for the main circuit
power supply, or
50VDC or higher
when 24VDC is set
for the main circuit
power supply.
The voltage is lower
than 70VDC when
48VDC is set for the
main circuit power
supply, or lower than
50VDC when
24VDC is set for the
main circuit power
supply.
Check the regenerative 100
load ratio with MR
Configurator when
alarm occurs.
15 - 46
Check result
Set it correctly.
Check 2).
Reduce the power supply
voltage.
Check 3).
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.
Check the applied voltage
of the main circuit is
48VDC when 24VDC is set
for the main circuit power
supply.
Action