YASKAWA SGDA series - Page 162

3.8 Special Wiring
151
b) The setup procedure is as follows:
1
Turning SGDA Servopack ON
• Wire the SGDA Servopack, motor and encoder in
the normal way.
• Connect the battery and turn the SGDA Servopack
ON.
2
3
Resetting Data
• Turn the SGDA Servopack OFF, then disconnect
the encoder connector.
• Short-circuit encoder connector terminals 13 and
14 for two seconds or more.
4
Turning the Encoder ON
• For speed/torque control (SGDA- jjjS), set the
SEN signal at high level. (For position control
(SGDA-jjjP), the encoder is already ON.)
• Keep the encoder turned ON for at least three min-
utes.
• It does not matter even if alarm status arises.
Turning the Power ON
• Return the wiring to the original state.
• Turn the SGDA Servopack ON and set the SEN
signal at high level. (For position control
SGDA-jjjP, turn the SGDA Servopack ON
only.)
• If alarm “A.00” arises, repeat the same procedure
from the beginning.
• If no problem has occurred, the setup procedure is
complete.
NOTE Setting up the encoder sets the revolution count inside the encoder to 0.
After setting up the encoder, always reset the machine home position. Operating the ma-
chine without the home position being reset does not only damage the machine but may
also cause an accident resulting in injury or death.
7) Absolute Data Exchange Sequence
The Servopack sends absolute data to the host controller when receiving output from a
12-bit absolute encoder. This data exchange sequence is described below.
Use the following detailed information when designing a host controller.
a) Outline of Absolute Signal
The 12-bit absolute encoder outputs PAO,
PBO, PCO and PSO as shown on the
right.
Signal
Name
Status Contents
PAO
Initial state Serial data
Initial incremental pulse
P
AO
Normal state Incremental pulse
PBO
Initial state Initial incremental pulse
PBO
Normal state Incremental pulse
PCO Normal state Home position pulse
PSO Normal state Rotation count serial data
3
Servopack
Frequency
dividing
circuit