Yaskawa Large Capacity Sigma II Series - Manual (Page 171)

4.7 Absolute Encoders
4-95
4
4.7.6 Multiturn Limit Setting
When implementing absolute detection systems for machines that turn m times in response
to n turns in the load shaft, such as disc tables, it is convenient to reset the multiturn data
from the encoder to 0 every m turns. The Multiturn Limit 1 Setting allows the value m to be
set for the encoder.
Select the absolute encoder usage with the following parameter.
“0” in the following table must be set to enable the absolute encoder.
The multiturn limit is set in the SERVOPACK using the following parameter.
If the Multiturn Limit Setting is set to 65535 (factory setting), the multiturn data will vary
from -32768 to 32767. If any other value is set, the multiturn data will vary from 0 to the set-
ting of Pn205.
• Variation of multiturn data when the multiturn limit value is 65535 (factory setting).
1 Multiturn limit
The multiturn limit is the upper limit of the multiturn data. If Pn002.2 = 0, the multiturn data will vary
between 0 and the value set for Pn205 (Multiturn Limit Setting).
Pn002.2 Absolute Encoder Usage Factory
Setting:
0
Speed/Torque
Control,
Position Control
Pn002.2 Setting Contents
0 Use the absolute encoder as an absolute encoder.
1 Use the absolute encoder as an incremental encoder.
Pn205 Multiturn Limit Setting Unit:
rev
Setting
Range:
0 to 65535
Factory
Setting:
65535
Speed/Torque
Control,
Position Control
TERMS
+32767
-32768
Negative direction
No. of rotations
Positive direction
Multiturn data 0