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3. SIGNALS AND WIRING
3.6 Detailed description of signals (devices)
3.6.1 Forward rotation start
Reverse rotation start Temporary stop/Restart
(1) 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 signal (RD).
(2) 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.
Servo motor speed
Temporary stop/Restart (TSTP)
Forward
rotation
0r/min
Forward rotation start (ST1)
or reverse rotation start (ST2)
3ms or less 3ms or less
5ms or less
10ms
or less
(3) 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.
(4) 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 movement finish (MEND) is output.