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

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7. Wiring and Connection 
 
 
 
 
 
7 - 20
7-9  Wiring of an external emergency stop 
 
7-9-1  External emergency stop setting 
 
Besides the main emergency stop input from the NC bus line (CN1A, CN1B), double-protection when 
an emergency stop occurs is possible by directly inputting an independent external emergency stop to 
the servo drive unit. Even if the main emergency stop is not input for some reason, the contactors will be 
shut off within 30 seconds after the external emergency stop is input. 
 
 
Mitsubishi NC 
External emergency 
stop input 
MDS-R-V1/V2
CN1A CN1B
MDS-R-V1/V2
CN1A
CN1B
10
VDD 
5
COM 
15
MC 
CN9
Emergency stop 
Emergency stop
3
SG 
20 EMGX 
Contactor shutoff command
Contactor control axis 
 
 
 
No. Abbrev. Parameter 
name 
Explanation 
SV036 PTYP* Regenerative 
 
 
 
 
resistor  type 
 
F 
E
D
C
B
A
9
8
7
6
5 
4 
3 
2 
1
0
 
  
 
 
amp 
rtyp 
emgx   
 
 
 
 
 
 
  
 
 bit 
Descriptions 
 
  
 
 
4 
Set the external emergency stop function.  
(Setting is prohibited for values with no description.) 
 
  
 
 
5 
Setting
Descriptions  
 
  
 
 
6 
emgx
0
External emergency stop invalid 
 
 
 
 
 
 
7 
4
External emergency stop valid 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
CAUTION
 
Always input the external emergency stop to the servo drive unit controlling 
the contactors. 
 
1.   When the MDS-R-V1/V2 controls the contactor, the external emergency 
stop input is validated for the axis receiving the main circuit power supply 
from that contactor. When the converter controls the contactor, use the 
external emergency stop input of the converter. 
 
 
POINT
 
2.   The external emergency stop input is merely an auxiliary input, so always 
input the main emergency stop (NC bus line). An external emergency stop 
error (alarm 55) will occur if only an external emergency stop is input.