Yaskawa Sigma-5 User Manual: Design and Maintenance - Rotary Motors - Manual (Page 208)

6 Utility Functions (Fn )
6-6
6.4 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 a servo ON command is input, send a servo OFF command.
(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 Example Keys Description
1
Press the Key to open the Utility Function Mode
main menu and select Fn003.
2
Press the Key. The display is switched to the
execution display of Fn003.
Note:If the display is not switched and “NO-OP” is
displayed in the status display, change the fol-
lowing settings. (Refer to 6.12.)
• If Write Prohibited is set in Fn010:
→ Cancel the Write Prohibited setting.
• If a servo ON command is input:
→ Send a servo OFF command.
3
Press the Key.
“RUN” is displayed in the status display, and power
is applied to the servomotor.
Note: If the servomotor is already at the zero position,
“-Complete-” is displayed.
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