Yaskawa MP920 Motion Module - Manual (Page 400)

9 Application Precautions
9.4.2 Absolute Encoder Setting
9-20
9.4.2 Absolute Encoder Setting
Set the following parameters when using an absolute encoder with the SVA Module to set
the Reverse Rotation Mode on the SERVOPACK and invert the rotation direction of the Ser-
vomotor.
Set these settings carefully. Improper settings will cause incorrect operation.
Setting the Rotation Direction Selection SERVOPACK Parameter
Fixed Parameters for the SVA Module
• Set the following items as shown to use the standard Servomotor rotation direction setting.
• Set the SERVOPACK Parameter (Rotation Direction Selection ) to 0 (standard setting).
• Set the SVA Module fixed parameter No. 4 (Rotation Direction Selection with an Absolute
Encoder) to 0 (forward rotation selection).
• Connect the overtravel signals according to the movement of the machine (forward and reverse).
See 9.2 Overtravel Function for more details.
Parameter Description Setting Meaning Factory
Setting
SGDA,
SGDB
SGDM,
SGDS
Cn-02 bit 0 Pn000.0 Rotation Direc-
tion Selection 0 Counterclockwise when view-
ing the Servomotor from the
load end is the forward direc-
tion (standard setting). 0
1 Clockwise when viewing the
Servomotor from the load end
is the forward direction
(Reverse Rotation Mode).
Parameter
No.
Name Description Factory Setting
4 Rotation Direction
Selection with an
Absolute Encoder
(DIRINV) Specifies the rotation direction when
using an absolute encoder. 0
(Forward rotation
selection)
0 Forward rotation selection
1 Reverse rotation selection
SGDB/SGDM/SGDS
CN1-42
CN1-43
Reverse direction Forward direction
SERVOPACK
Forward
direction
overtravel Reverse
direction
overtravel
Servomotor
INFO