Справочник Пользователя для Mitsubishi Electronics MDS-R

 
 
 

 

 

10 - 9

 

The motor power cable is in contact with FG (Frame Ground). 

 

 

Check the motor power cable connection.

Correctly connect. 

1  Ground fault in motor power cable (U, V, 

W phase). 

Disconnect the motor's cannon plug, 
and check the insulation across the 
power cable and FG. 

Replace the power cable. 

2  Drive unit is faulty. 

Check the repeatability. 

If the problem is repeated, replace the 
drive unit. 

3  Ground fault in motor. 

Confirm that there is no ground fault in the 
power cable, and without disconnecting 
the cannon plug, check the insulation 
across the power cable and FG. 

Replace the motor. 
(When using the absolute position 
system, the zero point must be 
established again.) 

Check whether the motor is submerged 
in cutting solution. 

4  Motor is faulty. 

Check whether the motor has been 
subject to high temperatures. 

Replace the motor and improve the 
motor installation environment. 
(When using the absolute position 
system, the zero point must be 
established again.) 

 

The absolute position was lost, as the backup battery voltage dropped in the absolute position detector.

 

 

Measure the battery voltage with a 
tester. (Alarm occurs at 3V or less). 

1  Battery voltage has dropped. 

Does warning 9F occur at the same 
time? 

Replace the battery and establish the 
zero point. 
(The machine operation will not be 
affected even if there is no battery as 
long as the power is not turned OFF.) 

2  Detector cable was disconnected while 

power was OFF. 

Did alarm 18 occur last time power was 
turned ON? 

Correctly connect the detector cable, 
and establish the zero point. 

3  Detector cable is broken. 

Check the detector cable continuity with 
a tester. 

Replace the cable and establish the 
zero point. 

 

A power module error occurred in the axis whose axis No. selection switch was set to "F"(free axis). 

 

 

1  CPU peripheral circuit operation is 

incorrect. 

Check for abnormalities in the unit's 
surrounding environment, etc. 
(Example: Ambient temperature, noise, 
grounding) 

Improve the surrounding environment. 

2  Drive unit is faulty. 

Check the repeatability. 

If the problem is repeated, replace the 
drive unit. 

 

An initial CPU error was detected in the motor side detector. 

 

 

1  Detector internal circuit operation is 

incorrect. 

Check for abnormalities in the detector's 
surrounding environment, etc. 
(Example: Ambient temperature, noise, 
grounding) 

Improve the surrounding environment. 

2  Detector is faulty. 

Check the repeatability. 
Try connecting the drive unit and 
detector with another axis, and check 
the repeatability. 
(Note) Do not release the emergency 

stop in this case. 

Replace the detector. 
(When using the absolute position 
system, the zero point must be 
established again.)