Mitsubishi Electric MELDAS MDS-B-SVJ2 Series, Технические характеристики и инструкция по эксплуатации

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Chapter 8 Troubleshooting
8-8
No. Name Details Cause of occurrence Investigation method Remedy
The motor capacity is
insufficient. Review the motor capacity selection. Change the motor or
amplifier capacity.
The brakes cannot be
released. Check the brake operation.
• Check the brake relay.
• Check the connector (CN3) connection. Repair the faulty
section.
Check the load current on the CNC servo
monitor and find the machine load.
Is the ball screw bent? Replace the faulty
section in the
machine. An excessive force is
being applied from the
machine.
Is there interference with the positioning
pin? Do not use
positioning pins.
50 Overload 1 An excessive load was
applied for longer than
the set time.
The parameter setting
is incorrect. Are SV021 and SV022 set to the
standard values? Set the standard
values.
Visually check whether there was a
collision with the machine. Check the cause of
the collision. The machine was
collided with.
Is there interference with the positioning
pin? Do not use
positioning pins.
The motor cable
connection is incorrect. Check the motor power line (U, V, W).
• Is the U, V, W phase order correct?
• The power line is not connected.
• Is the cable connected to the motor for
another axis? Connect correctly.
Detector fault Change with another axis and check the
repeatability. Replace the
detector.
51 Overload 2 An excessive load was
applied for longer than
the set time.
The detector connec-
tion is incorrect. Check the connection. Connect correctly.
The speed loop gain
(VGN1) is small. Is the motor speed fluctuating? Adjust the gain.
Is the acceleration/deceleration time
constant too short?
The current limit value is too low and a
sufficient torque is not output.
Adjust the
parameters. The motor load is too
large.
The motor brakes cannot be released? Repair the brake
circuit.
The motor is
demagnetized. The HA motor is easily demagnetized.
Remove the motor, and check that it
turns smoothly. (CNC motor) Replace the motor.
The excessive error
detection width is too
small. Check the SV023 (SV053) setting value. Adjust the
parameters.
The input voltage is
low. Is the input voltage 170V or less, or near
170V?
Is the input voltage unstable? Check the power
supply.
Increase the
acceleration/deceler
ation time constant.
The motor cable
connection is incorrect. Check the motor drive line (U, V, W).
•
Is the U, V, W phase order correct?
•
Is the cable connected to the motor for
another axis?
Connect correctly.
Detector fault Change with another axis and check the
repeatability. Replace the
detector.
52 Excessive error
1
The actual motor
position and model
position difference was
excessive at servo ON.
The detector connec-
tion is incorrect. Check the connection. Connect correctly.
The excessive error
detection width is too
small. Check the VS026 setting value. 53 Excessive error
2
The actual motor
position and model
position difference was
excessive at servo
OFF.
The CNC has stopped
the follow up function. Check the CNC parameters.
Adjust the
parameter.
Main emergency stop
(sequence input) error Check the emergency stop input and
sequence program. Improve the
emergency stop
sequence. 55 External
emergency stop
error
There is no contactor
shutoff command even
after 30sec. have
elapsed from the input
of the external
emergency stop.
[Detected even when
the control axis is
removed.]
The parameter setting
is incorrect. Check the setting of the SV036 external
emergency stop selection. Set correctly.