IAI America MSEP - Manual (Page 160)

3.8 I/O Signal Controls and Function
152
(7) Positioning start (CSTR) PLC Output Signal
This signal is processed at the startup (ON edge) and the positioning is performed to the target
position with the specified position No. or set using the PLC’s target position register.
If a movement command is issued when the first home return is not yet completed after the
power is turned ON (HEND signal OFF), home return will be performed automatically to
establish the coordinates first, after which the actuator will move to the target position.
Turn “OFF” this signal after confirming that the Positioning Completion Signal (PEND) signal
has been turned “OFF”.
Target position
(PLC → MSEP)
CSTR
(PLC → MSEP)
PEND
(MSEP → PLC)
(8) Moving signal (MOVE) PLC Input Signal
This signal is turned ON while the actuator’s slider or rod is moving. (Including the pressing or
jog operation after the homing operation.)
After the completion of the positioning, homing or pressing operation, or during the pause
condition, this signal is turned “OFF”.
(9) Positioning completion signal (PEND) PLC Input Signal
This signal is turned “ON” when the actuator is moved to the target position and reaches the
positioning width and the pressing is completed.
Speed
Movement distance
Target position
Positioning width
Time
Timing at which the
position complete signal
turns ON
When the servo-motor is turned ON from OFF condition, the positioning is performed with the
position set as the target position. Accordingly, this signal is turned “ON” and after that, when
the positioning operation is started with the home return (HOME) signal and positioning start
(CSTR) signal, this signal is turned “OFF”.
Caution: When the servo-motor is turned OFF or stopped in an emergency while the actuator
is stopped at the target position, the PEND signal is turned “OFF” temporarily.
Then, when the servo-motor is turned “ON” and the actuator is within the positioning
width, the PEND signal is turned “ON” again.
When the positioning is completed with the CSTR signal turned “ON”, the PEND
signal is not turned “ON”.