Mitsubishi Electric MELSERVO-J3W Series, Instruction Manual

Page: 451 / 500

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