Yaskawa Sigma-5 User Manual: Design and Maintenance - Rotary Motors - Manual (Page 232)

6 Utility Functions (Fn )
6-30
6.19 Origin Setting (Fn020)
When using an external encoder for fully-closed loop control, this function is used to set the current position
of external encoder as the origin (zero point position).
This function sets current scale position as origin when using the absolute external encoder.
Use the following product as an absolute external encoder.
Absolute separate linear scale (made by Mitutoyo Corporation)
ABS ST780A series
Model ABS ST78 A
(1) Settings before Operation
The following settings are required before setting origin.
• If a servo ON command is input, send a servo OFF command.
(2) Operating Procedure
Step Display Example Keys Description
1
Press the Key to open the Utility Function Mode
main menu and select Fn020.
2
Press the Key. The display is switched to the
execution display of Fn020.
Note: If the display is not switched and “NO-OP” is
displayed in the status display, change the fol-
lowing settings.
• 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 or Key to select one of five ori-
gins: ORGSET1 to ORGSET5.
4
Press the key to start setting the origin. The mes-
sage, “Scale Origin Set,” blinks while the origin is
being set. After the origin has been successfully set,
the displayed status changes as follows:
“BB”
→“DONE”→“BB”
5
Press the Key to return to the Utility Function
Mode main menu.
6 Turn OFF the power and then turn it ON again to validate the new setting.
B B − F U N C T I O N −
F n 0 1 F : F B O p M o t I D
F n 0 2 0 : S − O r i g S e t
F n 0 3 0 : S o f t R e s e t
F n 0 8 0 : P o l e D e t e c t
O R G S E T 1
B B
S c a l e O r i g i n S e t
O R G S E T 5
B B
S c a l e O r i g i n S e t
B B
S c a l e O r i g i n S e t
B B − F U N C T I O N −
F n 0 1 F : F B O p M o t I D
F n 0 2 0 : S − O r i g S e t
F n 0 3 0 : S o f t R e s e t
F n 0 8 0 : P o l e D e t e c t