Mitsubishi Electric Melservo-H Series, Технические характеристики и инструкция по эксплуатации

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6. TROUBLESHOOTING
Indication Name Definition Cause Action
1. Power supply voltage is low.
2. Instantaneous control power failure
occurred for more than 100ms.
3. Shortage of power supply capacity
caused the power supply voltage to
drop at start, etc.
4. Power switched on within 5s after it
had switched off.
Review the power supply. A.10 Undervoltage Control power supply
voltage dropped to
160V or less.
5. Faulty parts in the servo amplifier
Checking method
Alarm (A.10) occurs if power is
switched on after all connectors
are disconnected.
Change the Converter unit.
A.12 Memory alarm 1 RAM, ROM memory
fault
A.13 Clock alarm Printed board fault
A.15 Memory alarm 2 EEP-ROM fault
Failure of the part in the converter unit.
Alarm (A.10, A.13, A.15) occurs
if all connectors are disconnected
and power is switched on.
Checking method
Change the Converter unit.
1. Wrong setting of parameter No. 0 Set correctly.
2. Regenerative brake option is not
connected.
Connect correctly.
3. High-duty operation or continuous
regenerative operation caused the
permissible regenerative power of
the regenerative brake option to be
exceeded.
Checking method
Call the status display and check
the regenerative load ratio.
1. Reduce the frequency of
positioning.
2. Use the regenerative brake
option of larger capacity.
3. Reduce the load.
4. Power supply voltage is
abnormal.260V or more
Review power supply
5. Regenerative transistor faulty.
Checking method
1) The regenerative brake option
has overheated abnormally.
2) The alarm occurs even after
removal of the built-in
regenerative brake resistor or
regenerative brake option.
Change the Converter unit.
6. Regenerative brake option faulty. Change Converter unit or
regenerative brake option.
A.30 Regenerative
alarm Permissible
regenerative power of
the built-in
regenerative brake
resistor or
regenerative brake
option is exceeded.
7. Unusual overheat due to cooling fan
stop
1. Change the Converter unit or
cooling fan.
2. Reduce ambient temperature.
1. Lead of regenerative brake option is
open or disconnected.
1. Change lead.
2. Connect correctly.
2. Regenerative transistor faulty.
3. Wire breakage of regenerative
brake option
1. For wire breakage of built-in
regenerative brake resistor,
change servo amplifier.
2. For wire breakage of regenerative
brake option, change regenerative
brake option.
A.33 Over voltage Converter bus voltage
exceeded 400V.
4. Capacity of regenerative brake
option is insufficient.
Add regenerative brake option or
increase capacity.
1. Servo amplifier fault caused the
parameter setting to be rewritten.
Change the Converter unit. A.37 Parameter
alarm Parameter setting is
wrong.
2. Parameter data mis-setting. Set parameter correctly.
1. Servo amplifier faulty. Change the servo amplifier
2. The power supply was turned on and
off continuously by overloaded status.
The drive method is reviewed.
A.45 Main circuit
device overheat Main circuit device
overheat
3. Air cooling fan of servo amplifier stops. The cooling method is reviewed.
A.50 Over load 1 Load exceeded
overload protection
characteristic of
Converter unit Converter unit is used in excess of its
continuous output current. 1. Reduce load.
2. Review operation pattern.