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2 Wiring and Connection
MITSUBISHI CNC
2 - 42
[2] When only the external emergency stop is input
If only the external emergency stop is input, all the drive units that share one NC communication
enter an emergency stop state and deceleration control (servo/spindle) or dynamic brake stop
(servo) is executed. At this time, the axis to which the external emergency stop is input enters "in
external emergency stop" (EA display). The contactor is turned OFF in accordance with the gate off
delay time (SV055/SP055), as the NC emergency stop is not input and the ready signal is not
turned OFF.
[3] When only the NC emergency stop is input
Motors of all axes enter deceleration stop in the same sequence as normal operation (when both
NC and external emergency stop signals are input) and the contactor is shut off. In case that all
axes stop is not confirmed and the ready signal is not turned OFF, the contactor is shut off in
accordance with the max. gate off delay time (SV055/SP055) which is set to the contactor control
axis.
ON
OFF
0
dx
Cx→dx
EA
E7
ON
OFF
Deceleration control, or dynamic brake stop
NC
Emergency stop input (EMG)
External emergency stop
input (EMGX)
Motor break control output
(MBR) (Servo only)
Motor speed
Contactor control output (MC)
Servo drive unit status display
When only the external emergency stop is input
Gate off delay time
SV055/SP055
ON
Cancel
ON
Cancel
Cancel
ON
Ready signal (RDY)
Contactor control command
ON
OFF
0
ON
OFF
dx
Cx→dx
E7
NC
Emergency stop input (EMG)
External emergency stop
input (EMGX)
Motor break control output
(MBR)(Servo only)
Motor speed
Contactor control output (MC)
Drive unit status display
When only the emergency stop of NC is input
ON
Cancel
ON
Cancel
Cancel
ON
Ready signal (RDY)
Contactor control command
NC confirms
all axes stop
Deceleration control, or dynamic brake stop