IAI R-unit RSEL, Instruction Manual, Page: 589 / 844

Chapter 10 Parameter
10.3 Parameter List (Driver Unit)
10-56
ME0392-4C
[Homing offset (Parameter No. 22)]
No. Name Unit Input range Default initial value setting
22 Homing offset
mm
(deg)
0.00 to 9,999.99 In accordance with actuator
Sets the distance from the mechanical end to the home position.
Home is adjustable in the following cases.
·To match the actuator home position and the mechanical home position after assembly into
equipment.
·To set a new home position after reversing the default home direction.
·To eliminate a slight deviation from the previous home position generated after replacing the
actuator.
Adjustment process
(1) Perform home return motion.
(2) Check amount of deviation.
(3) Change the parameter.
(4) After setting, repeat home return motion several times to confirm that the actuator always
returns to the same home position.
Caution
● If the homing offset has been changed, the software limit parameter also needs to be
reviewed.
If the value must be set above the default setting, contact IAI.
● For the absolute specification, if a value close to an integral multiplication of t he lead
length (including homing offset 0) is set for the homing offset, servo lock status may
ensue in the Z-phase during the absolute reset, and coordinates may deviate by the
lead length.
● For absolute specification, never set a value close to an integ ral multiplication of the
lead length. Secure sufficient margin.
10.3 Parameter List (Driver Unit)
ME0392-4C
10-57
[Excitation Signal Detection Operation Travel Direction (Parameter No. 28)]
No. Name Unit Input range Default initial value setting
28 Excitation signal detection
operation travel direction
－
0: Reverse
1: Forward
In accordance with actuator
After turning the power ON, the first servo ON detects excitation. Operation direction during
detection is set.
There is normally no need to make changes. Set in a direction which makes movement of the
motor easy if the mechanical end or an obstacle is contacted when power is turned ON.
If the direction without contact is the same as the home return direction, set the same value as
Parameter No. 5 "Home Return Direction." If the direction is opposite, set the value opposite to
that of Parameter No. 5 (1 if No. 5 is 0, 0 if No. 5 is 1).
For simple absolute specification and RCP5 Series, it detects excitation upon home return
motion complete.
[Excitation Signal Detection Time (Parameter No. 29)]
No. Name Unit Input range Default initial value setting Specifications
29 Excitation signal
detection time
ms
1 to 999 10 Stepper motor specification
50 to 999 128
24V AC servo motor
specification
After turning the power ON, the first servo ON detects excitation. Set this detection time.
There is normally no need to make changes. Adjustment of this parameter can be effective at
times when an excitation detection error or abnormal operation has occurred.
Contact IAI when changing this parameter.
For simple absolute specification and RCP5 Series, it detects excitation upon home return motion
complete.
24V AC servo motor specification
and stepper motor specification only
24V AC servo motor specification
and stepper motor specification only