7.4 Origin Search (Fn003)
7-5
7
Utility Functions (Fn)
7.4 Origin Search (Fn003)
The origin search is designed to position the origin pulse position of the incremental encoder (phase-C) and to
clamp at the position.
This mode is used when the motor shaft needs to be aligned to the machine.
Motor speed at the time of execution: 60 min
-1
(For SGMCS direct drive motors, the speed at the time of execution is 6 min
-1
.)
(1) Settings before Operation
The following settings are required before performing an origin search.
• If the S-ON input signal is ON, turn OFF the signal.
• If Pn50A.1 is set to 7 (i.e., the servo is always ON), change the value.
(2) Operating Procedure
Follow the steps below to execute the origin search.
CAUTION
• Perform origin searches without connecting the coupling.
The forward run prohibited (P-OT) and reverse run prohibited (N-OT) signals are not effective in origin
search mode.
For aligning the motor
shaft with the machine
Servomotor
Machine
Step
Display after
Operation
Keys Description
1
Press the MODE/SET Key to select the utility function
mode.
2 Press the UP or DOWN Key to select the Fn003.
3
Press the DATA/SHIFT Key for approximately one second,
and the display shown on the left appears.
Note: When "no-oP" blinks for approximately one second,
the write prohibited setting is set in Fn010. Change
the setting in Fn010, and press the key again after
enabling writing. (Refer to 7.12.)
4
Press the MODE/SET Key.
The servo turns ON.
5
Pressing the UP Key will rotate the motor in the forward
direction. Pressing the DOWN Key will rotate the motor in
the reverse direction. The rotation of the servomotor
changes according to the setting of Pn000.0.
Note: Direction when viewed from the load of the servomo-
tor.
MODE
Parameter
UP key
(Forward)
DOWN key
(Reverse)
Pn000
n.
0
CCW CW
n.
1
CW CCW
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