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3 Function Specifications
MITSUBISHI CNC
3-5 Sequence functions
3-5-1 Contactor control function
With this function, the contactor ON/OFF command is output from the power supply unit (or servo/spindle
drive unit for integrated type) based on the judgement as to whether it is in emergency stop, emergency stop
cancel, spindle deceleration and stop or vertical axis drop prevention control, etc.
3-5-2 Motor brake control function
With this function, the brake ON/OFF command is output from the servo drive unit based on the judgement
as to whether it is in emergency stop, emergency stop cancel or vertical axis drop prevention/pull-up control,
etc.
When a multiaxis drive unit is connected, all the axes are simultaneously controlled.
3-5-3 External emergency stop function
Besides the emergency stop input from the NC, double-protection when an emergency stop occurs can be
provided by directly inputting an external emergency stop, which is a second emergency stop input, to the
power supply unit (servo/spindle drive unit for integrated type).
Even if the emergency stop is not input from NC for some reason, the contactors will be activated by the
external emergency stop input, and the power can be shut off.
MDS-D-SVJ3/SPJ3
CN1A
OPT1
EMG
MDS-D-SVJ3/SPJ3
CN1B
CN1A
CN9
CN9
3
DOCOM
13 DO
15
MC
20
EMGX
19 DI
5
DICOM
3
DOCOM
13 DO
15
MC
20
EMGX
19 DI
5
DICOM
24G
MDS-D-SVJ3/SPJ3
CN1A
OPT1
EMG
MDS-D-SVJ3/SPJ3
CN1B
CN1A
CN9
CN9
3
DOCOM
13 DO
15
MC
20
EMGX
19 DI
5
DICOM
3
DOCOM
13 DO
15
MC
20
EMGX
19 DI
5
DICOM
(1)
(2)
24G
24G
Mitsubishi NC
Emergency
stop
Emergency
stop
Alarm
Alarm
Optical
communication
G380 cable
Optical
communication
G396 cable
24VDC
External emergency
stop input
Contactor
shutoff
command
Contactor
shutoff
command
24VDC
External emergency stop switch
*Emergency stop when opened.
*Operated synchronously on the NC
side using another contact.
(Note1) Make sure that DICOM is connected to 24V in all drive systems.
(Note2) Make sure that 24G is connected to the external emergency stop switch.
(Note3) Make sure that the contact of the external emergency stop switch is not
the same as NC.
Mitsubishi NC
Emergency
stop
Emergency
stop
Alarm
Alarm
Optical
communication
G380 cable
Optical
communication
G396 cable
External emergency
stop input
Contactor
shutoff
command
Contactor
shutoff
command
External emergency stop switch
*Emergency stop when opened.
*Operated synchronously on the NC
side using another contact.
(Note1) Make sure that DICOM is connected to 24G in all drive systems.
(Note2) Make sure that 24V is connected to the external emergency stop switch.
(Note3) Make sure that the contact of the external emergency stop switch is not
the same as NC.
When DICOM is connected to 24V
When DICOM is connected to 24G
External power supply
is required for output.
Open collector
24VDC
Select the polarity of DICOM