4. Operation
4.3 Pulse Train Control Mode
4-108 ME0342-4B
[6] Home Return (HOME, HEND)
PIO signal
The HOME signal is intended for home return.
When the HOME signal is turned ON, the command will be processed at the leading edge
(ON edge) of the signal and the actuator will perform home return operation.
Once the home return is completed, the HEND (home return completion) signal will turn ON.
Set the home (enter “0”) in the current value register of the host controller (PLC) using the
current value preset function, etc., when the HOME signal turns ON.
Caution
● The HOME signal is given priority over any pulse train command. Even when the
actuator is moving with a pulse train command, it will start home return once the HOME
signal is turned ON.
● The HOME signal is processed only at the leading edge (ON edge) of the signal.
● If the SON signal is turned OFF or an alarm is detected during home return, the home
return operation will stop. If the servo is turned OFF, the home return command will be
cancelled even when the HOME signal remains ON. To perform home return again,
therefore, turn the HOME signal OFF and then turn it ON again.
● The actuator can be operated without using this function. If this function is not used,
however, management of position data will solely be dependent on the host controller
(monitoring soft stroke limit is effective in the home return complete status).
Therefore, take the necessary measures to prevent an over-stroke, such as not sending
pulse commands with travel distances exceeding the effective stroke or providing
external limit switches for stroke end detection, etc., to forcibly stop the actuator.
● For PIO pattern 6, servo-off, switching operation mode setting switch from MANU to
AUTO or deviation counter clearing causes HEND to be turned OFF. Perform home
return again.
[Home Return Operation of Slider Type/Rod Type Actuator]
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