Yaskawa MP2000 Series: Built-in SVB or SVB-01 Motion Module - Manual (Page 345)

9.3 Absolute Position Detection for Finite Length Axes
9.3.1 Parameter Settings for Finite Length Axes
9-8
( 3 ) Detailed Descriptions
[ a ] Axis Selection (Machine Controller Fixed Parameter No.1, Bit 0)
This setting is used to select either an finite or infinite length axis.
Set to 0 when using the axis as a finite length axis.
[ b ] Encoder Type and Absolute Encoder Usage
For an axis performing absolute position detection, set the parameters as shown in the following table.
[ c ] Number of Pulses per Motor Rotation
Refer to the following table and set the fixed parameter 36 (Number of Pulses per Motor Rotation) according to the
number of servomotor (encoder) bits. The settings can be used for all SERVOPACK models.
[ d ] Max. Revolutions of Absolute Encoder/Multiturn Limit Setting
These parameters determine the maximum value of the number of encoder turns managed by the SERVOPACK and
Machine Controller.
The setting is determined by the SERVOPACK that is used and the type of axis (Machine Controller fixed parameter 1,
bit 0). Set the parameters as shown in the following table when using an axis as a finite length axis.
Model Parameter Setting
Machine Controller
Fixed parameter 30
(Encoder Selection)
1: Absolute encoder
Σ-II, Σ-III and
Σ-V Series
Parameter: Pn002.2
(Absolute Encoder Usage)
0: Uses absolute encoder as an absolute encoder.
Σ-I Series
Parameter: Cn-0001 Bit E
(Encoder Type)
1: Absolute encoder
If the above settings are not used, correct motion control will not be performed. Set the parameters carefully.
Be sure to set both the Machine Controller and SERVOPACK parameters.
Number of Bits
Machine Controller
Fixed Parameter 36
(Number of Pulses per Motor Rotation)
12 4096
13 8192
15 32768
16 65536
17 131072
20 1048576
If the above settings are not used, correct motion control will not be performed. Set the parameters carefully.
Applicable
SERVOPACK
Machine Controller
Fixed Parameter 38
(Maximum Number of Absolute Encoder
Turns Rotation)
SERVOPACK
Parameter Pn205
(Multiturn Limit Setting)
Σ-II, Σ-III and
Σ-V Series
65535 65535
Σ-I Series 99999 −
If the above settings are not used, the position may be offset. Set the parameters carefully.