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

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Chapter 8 Troubleshooting
8-7
No. Name Details Cause of occurrence Investigation method Remedy
The communication
cable is broken. Check the conductivity with a tester.
The communication
cable connection is
incorrect. Are the communication pair cables
connected in reverse?
Replace the cable
The grounding is
incomplete. Check the grounding state. Correctly ground.
39 NC-DRV
communication:
Protocol Error 2
There was an error in
the communication
data from the CNC.
[Also detected when
the control axis is
removed.]
Amplifier fault. Change the connection with that for
another amplifier and find the cause. Replace the amplifier.
Is VGN1 higher than the standard value
in respect to the load inertia?
(The standard VGN1 differs according to
the motor. Check "Chapter 4" again.) The speed loop gain
(VGN1) is excessive.
Is vibration occurring?
Lower VGN1.
The current loop gain
setting is incorrect. Check the current loop gain. Set the standard
value.
The inductive voltage
compensation gain is
high. Is the current FB exceeding the current
command during
acceleration/deceleration? Lower EC.
The U, V, W phase connection is
incorrect. The motor power line
connection is incorrect.
The line is connected to the motor of
another axis.
Connect correctly.
The detector cable
connection is incorrect. The detector cable is connected to
another axis. Connect correctly.
The grounding is
incomplete. Measure the resistance value between
amplifier FG and the ground, or the
potential difference during operation. Securely ground.
Amplifier fault Replace the
amplifier.
3A Overcurrent The motor drive
current is excessive.
Detector fault
Check the repeatability.
Replace the
detector.
Regenerative resistor
error Check the resistance value of the
regenerative resistor.
(Refer to "Chapter 6" for the resistance
values.) Replace the
regenerative resistor.
The regenerative
transistor is damaged
by a short circuit. Is the regenerative resistor burned? Replace the
amplifier.
An error was detected
in the regenerative
transistor or resistor.
The power supply
voltage is high.
(260V or more) Check the power supply voltage that
occurs at ready OFF with a tester. Review the power
supply.
3C Regeneration
circuit error
In the SVJ2-10 and
-20, the cooling fan
stopped and power
module overheating
was detected. The cooling fan in the
bottom of the amplifier
cooling fin stopped. Check that the fan turns when the control
power supply (L11, L21) is turned ON. Repair the amplifier.
The ambient
temperature is high. Check the ambient temperature. Improve the ambient
environment.
Has the overload alarm (50) cut off the
amplifier power and caused a forced
reset?
46 Motor overheat Overheating of the
motor was detected.
The motor load is
large.
Is the load too large?
Review the operation
pattern.
The power supply
connection is poor. Is the connector or connection
disconnected? Connect correctly.
Is the weather OK? (Has lightning
occurred?)
4F Instantaneous
power
interruption
The power was cut off
for 50msec or more.
The power supply
state is poor.
When using overseas, there are cases
when the power supply is poor.
Review the power
supply.