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7. Wiring and Connection
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7-9-3 External emergency stop operation sequence
If only an external emergency stop is input when "external emergency stop valid" is set (the main
emergency stop is not input), "In external emergency stop state" (warning EA) will be detected. Then,
the system will enter the emergency stop state.
If a contactor shutoff command is not issued from the NC unit within 30 seconds after the external
emergency stop is input (if the main emergency stop is not input), an external emergency stop error (alarm
55) is detected. If the main emergency stop is input within 30 seconds, the warning EA changes to the "In
NC emergency stop state" (warning E7). The normal emergency stop status (warning E7) will result.
Ready ON is possible even if an external emergency stop has been input when the emergency stop is
canceled, but an external emergency stop error (alarm 55) will occur after 30 seconds.
External emergency stop input sequences
OFF
ON
External emergency stop input
(EMGX)
Servo drive unit status displa
y
Contactor control output (MC)
ON
OFF
Motor speed
0
OFF
ON
Main emergency stop input
(EMG)
dx E7E
A
Deceleration control
Cxdx
OFF
ON
External emergency stop input
(EMGX)
Servo drive unit status display
Contactor control output (MC)
ON
OFF
Motor speed
0
OFF
ON
Main emergency stop input
(EMG)
dx EA (30s)
Deceleration control
55
When main emergency
stop is not input