Mitsubishi Electric MELSERVO-JN Series Instruction Manual page 58

3. SIGNALS AND WIRING
(2) Timing chart
Main circuit
Control circuit
Power supply
Base circuit
Servo-on (SON)
Reset (RES)
Ready (RD)
Trouble (ALM)
(3) Forced stop
CAUTION
Configure a circuit that shuts off the main circuit power as soon as EM1 is turned off at a forced stop. When
EM1 is turned off, the dynamic brake is operated to stop the servo motor immediately. At this time, the
display shows the servo forced stop warning (E6.1).
During the normal operation, do not use the forced stop (EM1) to alternate stop and run. The service life of
the servo amplifier may be shortened.
Also, the servo motor rotates simultaneously with the reset of the forced stop if a forward rotation start
(ST1) or the reverse rotation start (ST2) is ON, or if a pulse train is input during the forced stop. Be sure to
shut off the operation instruction during the forced stop.
(Note)
Forced stop
Note. For sink I/O interface. For source I/O interface, refer to section 3.8.3.
Servo-on (SON) accepted
(1 to 2s)
ON
OFF
ON
OFF
ON
OFF
ON
OFF
5ms
ON
OFF
No (ON)
Yes (OFF)
1s
Power-on timing chart
Configure a circuit which interlocks with an external emergency stop switch in order
to stop the operation immediately and shut off the power.
Servo amplifier
24VDC
DICOM
EM1
10ms
95ms
10ms 5ms
3 - 9
10ms 95ms
10ms 5ms 10ms