Mitsubishi Electric MELSERVO-JN Series, Instruction Manual

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13 - 11
13. POSITIONING MODE
13.2.4 Detailed description of the signals
(1) Forward rotation start, reverse rotation start, temporary stop/restart
(a) A forward rotation start (ST1) or a reverse rotation start (ST2) should make the sequence which can be
used after the main circuit has been established. These signals are invalid if it is switched on before the
main circuit is established. Normally, it is interlocked with the ready (RD).
(b) A start in the servo amplifier is made when a forward rotation start (ST1) or a reverse rotation start (ST2)
changes from OFF to ON. The delay time of the servo amplifier's internal processing is max. 3ms. The
delay time of other devices is max. 10ms.
6ms or more
Forward rotation start
(ST1) or reverse
rotation start (ST2)
Temporary stop/restart
(TSTP)
3ms or less
10ms
or less
3ms or less
Servo motor
speed
Forward
rotation
0r/min
(c) When a programmable controller is used, the ON time of a forward rotation start (ST1), a reverse
rotation start (ST2) or temporary start/stop (TSTP) signal should be 6ms or longer to prevent a
malfunction.
(d) During operation, the forward rotation start (ST1) or reverse rotation start (ST2) is not accepted. The
next operation should always be started after the rough match (CPO) is output with the rough match
output range set to "0" or after the travel completion (MEND) is output.