Mitsubishi Electronics MDS-R ユーザーズマニュアル

 
 
 

 

 

10 - 3

 
If the CNC system does not start up correctly and a system error occurs when the CNC power is turned 
ON, the servo drive unit or spindle drive unit may not have been started up correctly. 
Confirm the LED display on each unit, and take measures according to this section. 

 

The drive unit axis No. setting 
is incorrect. 

Is there any other drive unit that has the 
same axis No. set? 

Set correctly. 

The CNC setting is incorrect. Is the No. of CNC controlled axes 

correct? 

Set correctly. 

Is the connector (CN1A, CN1B) 
disconnected? 

Connect correctly.

AA 

Initial communication with 
the CNC was not 
completed correctly. 

Communication with CNC is 
incorrect. 

Is the cable broken?   
Check the conductivity with a tester. 

Replace the cable.

The axis is not used, the 
setting is for use inhibiting. 

Is the axis setting rotary switch set to "7" 
to "F"? 

Set correctly. 

Is the connector (CN1A, CN1B) 
disconnected? 

Connect correctly.

Ab 

Initial communication with 
the CNC was not carried 
out. 

Communication with CNC is 
incorrect. 

Is the cable broken?  
Check the conductivity with a tester. 

Replace the cable.

Check the repeatability. 

Replace the unit. 

12 

An error was detected in a 
memory IC or feedback 
IC by self-check to be 
made during the unit 
power ON. 

CPU peripheral circuit error

Check the grounding state and ambient 
temperature. 

Improve the ambient 
environment. 

 
 

If the LED on the top of the drive unit shows the emergency stop (E7) warning, the system has started 
up correctly. 

 
 
 
 
 
 

F1 

 
 
 
 
 

F

. 

F

.

E7 

F1 

E7 

Not lit 

 + axis No

Emergency 

stop 

 + axis No

Emergency 

stop