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7. Wiring and Connection
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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 EDCBA98765 4 3 2 10
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.