Mitsubishi MELDAS HS Series Specifications And Instruction Manual page 113

No. Name Details
2F Detector, Communication
communication with the detector
error was cut off or there
was an error in the
received data.
30 Over-regeneratio Overheating of the
n regenerative
resistor was
detected.
31 Overspeed The motor speed
exceeded the
tolerable value.
32 Power module The power module
overcurrent overcurrent
protection function
activated.
33 Overvoltage The PN bus wire
voltage exceeded
400 V.
34 CNC There was an error
communication, in the
CRC error communication
data from the CNC.
35 CNC The movement
communication, command data sent
data error from the CNC was
excessive.
Chapter 10 Troubleshooting
Cause of occurrence
Detector peripheral Check the repeatability.
circuit fault
Check the grounding state and ambient
temperature.
The connection between Remove the amplifier section, and check
the detector and the connector (CN2) connection.
amplifier is
disconnected. (SF202)
The regeneration Check the regeneration capacity.
frequency is too high.
The power voltage is Occurs at ready OFF.
high. (253V or more)
Check the power voltage with a tester.
The axis specification Check the machine specifications.
parameter (rapid) setting
is incorrect.
The servo parameter Check SV001 (PC1), SV002 (PC2),
setting is incorrect. SV018 (PIT), SV025 (MTYP).
The speed is Is the speed loop gain too low?
overshooting.
Is the current limit value too low?
Detector fault Does the alarm occur when the power is
turned ON?
Change with another axis and check the
repeatability.
Amplifier fault Replace the amplifier with one for another
axis, and check the repeatability.
Motor fault
The power voltage is Occurs at ready ON.
high. (280V or more)
Check the power voltage with a tester.
Broken wire in the
regenerative resistor.
The regeneration Check the load inertia.
capacity is large for the Refer to section 11-4-1.
HS-MF23.
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 communication Check the continuity.
cable shield is Open the cable connector section, and
disconnected or visually check.
dislocated.
The terminator is faulty. Is the terminator dislocated?
Replace the terminator.
Battery unit fault Is the battery unit dislocated?
Try replacing the battery unit.
The grounding is Check the grounding state.
incomplete.
Noise Check the ambient environment.
Amplifier fault Change the connection with that for
another amplifier and find the cause.
I/F unit fault
CNC unit fault
Not within amplifier Is this a sub-micron system?
specifications.
Is the axis a rotary axis?
10–4
Investigation method Remedy
Replace the detector
(amplifier).
Improve the ambient
environment.
Reconnect. (Refer to
section 9-3-3 for the
method.)
Lower the regeneration
frequency.
Review the power
supply.
Set correctly.
Set correctly.
Adjust the gain.
Adjust the limit value.
Replace the detector
(amplifier).
Replace the amplifier.
Replace the motor.
Review the power
supply.
Replace the amplifier.
Lower the speed.
Change to another
amplifier or motor
series.
Replace the cable.
Remedy correctly.
Check the connection.
Replace the
connector.
Check the connection.
Replace the battery
unit.
Correctly ground.
Improve the noise
source.
Clamp the shield.
Replace the amplifier.
Replace the I/F unit.
Replace the CNC unit.
Consult with
Mitsubishi.