Detailed Description Of The Signals; Forward Rotation Start, Reverse Rotation Start, Temporary Stop/Restart; Rough Match, In-Position - Mitsubishi Electric MELSERVO-J2 Series Instruction Manual

3. SIGNALS AND WIRING

3.4 Detailed description of the signals

3.4.1 Forward rotation start, reverse rotation start, temporary stop/restart

(1) Make up a sequence so that the forward rotation start (ST1) or reverse rotation start (ST2) is switched
on after the main circuit has been established. The forward rotation start (ST1) or reverse rotation
start (ST2) is invalid if it is switched on before the main circuit is established.
Normally, it is interlocked with the ready (RD).
(2) A start in the servo amplifier is made when the forward rotation start (ST1) or 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 signals is max. 10ms.
(3) When a programmable controller is used, the ON time of the forward rotation start (ST1), reverse
rotation start (ST2) or temporary stop/restart (STP) should be 5ms 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 signal is output with the rough match
output range set to 0 or after the in-position signal is output.

3.4.2 Rough match, in-position

The following chart shows the output timings of the rough match (CPO) and in-position (INP):
Downloaded from ManualsNet.com
Servo motor speed
Forward rotation start (ST1)
or reverse rotation start (ST2)
Temporary stop/Restart (STP)
Servo motor speed
Forward rotation start (ST1)
or reverse rotation start (ST2)
Rough match output
(CPO)
In-position output
search engine
3ms max.
10ms max.
5ms or longer
3ms
max.
Command
(INP)
3 - 12
3ms max.
Servo motor speed
In-position
output range