Mitsubishi Electric C70, Руководство по установке

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C70 Setup Manual
Appendix 2.16 Troubleshooting
571
Alarm No.
46
Motor overheat / Thermal error
Thermal protection function of the motor or in the detector, has started its operation.
Investigation details Investigation results Remedies SV SP
1
Check the repeatability.
(Note) For the spindle, check the
"temperature" of the "spindle unit" displayed
on the drive monitor screen.
[1] The alarm occurs before operation.
[2] The "temperature" displayed on the drive
monitor screen is different from ambient
temperature.
Check the investigation item No. 2.
[1] The alarm occurs after the operation
continues for a while.
[2] The "temperature" displayed on the drive
monitor screen rises drastically during the
spindle operation.
Check the investigation item No. 5.
2
Jiggle the detector connectors (drive unit
side and detector side) and check if they are
disconnected. The connector is disconnected (or loose). Correctly install.
The connector is not disconnected. Check the investigation item No. 3.
3
Turn the power OFF, and check the detector
cable connection with a tester.
The connection is faulty. Replace the cable.
The connection is normal. Check the investigation item No. 4.
4
When using MDS-B-HR, check if the motor
is validated even if a motor thermal is not
provided? SV034/bit2 = 0 Set SP034/bit2 to 1.
SV034/bit2 = 1 Check the investigation item No. 5.
5
Check the overload % (servo) or load meter
(spindle).
The load is large.
Servo:
Check the investigation item No. 6.
Spindle:
Check the investigation item No. 8.
The load is not large. Check the investigation item No. 9.
6 Is the unbalance torque high?
The constant load torque (fr
unbalance) is 60% or more. Select the motor so that the constant load
torque is 60% or less.
The constant load torque is less than 60%. Check the investigation item No. 7.
7
Was the overload alarm (50) forcibly reset
by turning the drive unit power OFF? The alarm was forcibly reset.
Do not turn the drive unit's power OFF when
an overload alarm occurs. (The NC power
can be turned OFF.)
The alarm was not forcibly reset. Check the investigation item No. 9.
8 Check the parameter settings.
The parameter is not set correctly. Correctly set.
The parameter is set correctly. Check the investigation item No. 9.
9
Measure the motor temperature when the
alarm occurs.
(Note) For the spindle motor, check the
"temperature" of the "spindle unit" shown on
the drive monitor screen. The motor unit is hot. Check the investigation item No. 10.
The motor is not hot. Check the investigation item No. 12.
10
When using a motor with fan, check whether
the fan is stopped, or it is clogged with dust,
etc.
The motor fan was stopped. Check the investigation item No. 11.
The motor fan wind flow is poor.
Clean the fan and ventilation holes inside of
the motor.
The direction of the ventilation is opposite. Change the connected phase sequence.
11 Check the fan wiring.
There is no problem. Check the investigation item No. 12.
The cable is broken. Replace the cable.
The cable is not broken. Replace the fan.
12
Replace the drive unit or motor with another
drive unit or motor, and check whether the
fault is on the drive unit side or motor side The alarm is on the drive unit side. Replace the drive unit.
The alarm is on the motor side. Replace the motor.
13
Check if there is any abnormality in the
unit's ambient environment.
(Ex. Ambient temperature, noise,
grounding)
Take remedies according to the causes of the abnormality in the ambient environment.
Alarm No.
48
Motor side detector: Error 5
The motor side detector (linear scale in the case of linear motor) detected an error.
As details differ for each detector, refer to "Appendix 2.3.1" for the description of this alarm.
Investigation details Investigation results Remedies SV SP
1 Check the alarm No. "1B" items.
Alarm No.
49
Motor side detector: Error 6
The motor side detector (linear scale in the case of linear motor) detected an error.
As details differ for each detector, refer to "Appendix 2.3.1" for the description of this alarm.
Investigation details Investigation results Remedies SV SP
1 Check the alarm No. "1B" items.