Mitsubishi MELDAS HS Series Specifications And Instruction Manual page 114

No. Name Details
36 CNC The communication
communication, from the CNC was
transmission cut off.
error
37 Initial parameter The servo
error parameter setting is
incorrect.
Check the error
parameter No. If
there are several
error parameters,
the most recent No.
is output.
38 CNC There was an error
communication, in the
protocol error 1 communication
data from the CNC.
39 CNC There was an error
communication, in the
protocol error 2 communication
data from the CNC.
3A Overcurrent The motor drive
current is
excessive.
3C Regenerative An error was
circuit error detected in the
regenerative
transistor or
resistor.
46 Motor overheat Overheating of the
motor was
detected.
4F Instantaneous The power was cut
stop off for 50 msec or
more.
50 Overload 1 An excessive load
was applied for
longer than the set
time.
Chapter 10 Troubleshooting
Cause of occurrence
The communication Check the connector (CN1A, CN1B).
cable is disconnected. (Including the other axes)
The communication Check the conductivity with a tester.
cable is broken.
The parameter is not Check the setting range of the parameter
within the setting range. having the error NO.
The HEX setting SV025: A non-entered motor type was
parameter setting is
incorrect. SV027: lmc 1 and 2 were set.
The electronic gears' The error No. is 101 (2301).
constant is overflowing. Check parameters SV001, SV002 and
SV018.
The SHG control option The error No. is 104 (2304).
setting is not provided. Check parameters SV057 and SV058.
The communication Check the conductivity with a tester.
cable is broken.
The communication Are the communication pair cables
cable connection is connected in reverse?
incorrect.
The grounding is Check the grounding state.
incomplete.
Amplifier fault Change the connection with that for another
amplifier and find the cause.
CNC unit fault
The communication Check the conductivity with a tester.
cable is broken.
The communication Are the communication pair cables
cable connection is connected in reverse?
incorrect.
The grounding is Check the grounding state.
incomplete.
Amplifier fault. Change the connection with that for another
amplifier and find the cause.
CNC unit fault.
The speed loop gain Is VGN1 higher than the standard value in
(VGN1) is excessive. respect to the load inertia?
Is vibration occurring?
The current loop gain Check the current loop gain.
setting is incorrect.
Amplifier and detector Check the repeatability.
fault
Regenerative resistor Check the repeatability
error
The regenerative
transistor is damaged
by a short circuit.
The ambient Check the ambient temperature.
temperature is high.
The motor load is large. Has the overload alarm (50) cut off the
amplifier power and caused a forced reset?
Is the load too large?
The power supply Is the connector or connection
connection is poor. disconnected?
The power supply state Is the weather OK? (Has lightning
is poor. occurred?)
When using overseas, there are cases
when the power supply is poor.
The motor capacity is Review the motor capacity selection.
insufficient.
The brakes cannot be Check the brake operation.
released.
• Check the brake relay.
An excessive force is Check the load current on the CNC servo
being applied from the monitor and find the machine load.
machine.
Is the ball screw bent?
Is there interference with the positioning
pin?
The parameter setting Are SV021 and SV022 set to the standard
is incorrect. values?
10–5
Investigation method
selected.
Remedy
Set correctly.
Replace the cable.
Set correctly.
Set correctly.
If the settings are OK,
consult with
Mitsubishi.
Set correctly.
Replace the cable.
Correctly ground.
Replace the amplifier.
Replace the CNC unit.
Replace the cable
Correctly ground.
Replace the amplifier.
Replace the CNC unit.
Lower VGN1.
Set the standard
value.
Replace the amplifier
and the detector.
Replace the amplifier.
Improve the ambient
environment.
Review the operation
pattern.
Connect correctly.
Review the power
supply.
Change the motor or
amplifier capacity.
Repair the faulty
section.
Replace the faulty
section in the
machine.
Do not use positioning
pins.
Set the standard
values.