Panasonic MINAS A6 Series, Technical Reference

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Power Supply Module
11-12
PSM
alarm
number
PSM alarm name Cause of alarm Measures of alarm
06 PSM main power supply
overcurrent alarm Abnormal current continuously flows to the
main power supply DC bus of the power supply
module in the main power supply established
state. Reduce the load current of the main power
supply DC bus.
1) The total output of all motors of the driver
module connected to the power supply
module is excessive. 1) The power supply module checks the
operation pattern of all motors connected to
the driver module that supplies power, and
reduces the load.
Decrease the acceleration time.
Reduce the motor speed.
2) Short circuit of main power supply DC bus. 2) Check the high-voltage power supply bus
bar connection between the power supply
module and the driver module.
3) Power supply module failure:
Related circuit is broken
3) Replace the power supply module.
07 PSM regenerative
overload alarm Regenerative energy exceeded the capacity of
regenerative resistance. Reduce regenerative energy.
Increase regeneration capacity.
1) The voltage of the converter rises due to
regenerative energy during deceleration
due to a large load inertia, and the voltage
further rises due to insufficient energy
absorption by the regenerative resistor.
Because the motor speed is high, the
regenerative energy cannot be absorbed
in a predetermined deceleration time.
1) The power supply module checks the
operation pattern of all motors connected to
the driver module that supplies power, and
reduces the load.
Decrease the deceleration time.
Reduce the motor speed.
Change to a regenerative resistor with high
regenerative processing capability.
Increased power supply module capacity.
2) The regenerative overload protection
function limits the operating limit of the
external resistor to 10% duty. 2) Set PSM Pr.00 "Regenerative operation
setting" to 2 (An external resistor is used,
but regenerative overload protection is not
executed)
When setting PSM Pr.00 "Regenerative operation setting" to 2, be sure to install external protection such as a thermal fuse.
The regenerative resistor and transistor may not be protected, and the regenerative resistor and transistor may overheat and
burn out.
MINAS A6 Multi cannot be used for continuous regenerative braking.
08 PSM regenerative
transistor alarm Failure of the regenerative drive transistor of
the power supply module. Replace the power supply module.
09 PSM regenerative
resistor monitoring alarm The regenerative resistor overheat protection
input (DIN2/COM2) of the power supply module
has become an abnormal side. Take measures to make the regenerative
resistor overheat protection input (DIN2/COM2)
normal.
1) The regenerative resistance temperature
has reached the overheat protection level. 1) Change to a regenerative resistor with high
regenerative processing capability.
2) Regenerative resistor overheat protection
input (DIN2/COM2) is disconnected. 2) Check the wiring between the regenerative
resistor and the power supply module.
3) Incorrect logic setting of regenerative
resistor overheat protection input
(DIN2/COM2). 3) Change bit1 "DIN2 logic setting" of PSM
Pr.05 "Regenerative resistance
temperature monitoring setting".
4) Power supply module failure:
Related circuit is broken. 4) Replace the power supply module.
(To be continued)