Yaskawa SGDB - Manual (Page 168)

APPLICATIONS OF Σ-SERIES PRODUCTS
3.8.5 Using an Absolute Encoder cont.
156
The setup procedure is as follows:
1 Discharging Electricity from the Encoder
• Turn the SGDB SERVOPACK OFF, then discon-
nect the encoder connector.
• Short-circuit encoder connector terminals R and S
for at least two minutes.
3 Resetting Data
• Turn the SGDB SERVOPACK
OFF, then disconnect the en-
coder connector.
• Short-circuit encoder connector
terminals 13 and 14 for two se-
conds or more.
(For SGM and SGMP servomo-
tors)
• Short-circuit encoder connector
terminals R and S for at least
two seconds.
(For SGMG, SGMD, and SGMS
servomotors)
4 Turning the Power ON
• Return the wiring to the original state.
• Turn the SGDB SERVOPACK ON and set the SEN
signal at high level.
• If alarm “A.00” arises, repeat the same procedure
from the beginning.
• If no problem has occurred, the setup procedure is
complete.
15-bit absolute encoder (Motor type encoder specifications=S)
1 Turning SGDB SERVOPACK ON
• Wire the SGDB SERVOPACK, motor and encoder
in the normal way.
• Connect the battery and turn the SGDB SERVO-
PACK ON.
Turning the Encoder ON
• Set the SEN signal at high level.
• Keep the encoder turned ON for at least three min-
utes.
• It does not matter even if alarm status arises.
2
Turning Power ON
• Return the wiring to the normal state.
• Connect the battery, turn the SGDB SERVOPACK
ON, and set the SEN signal at high level.
• If alarm “A.00” arises, repeat the same procedure
from the beginning.
• If no problem has occurred, the setup procedure is
complete.
Key position
12-bit absolute encoder (Motor type encoder specifications=W)
Key
position
2
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.
J Absolute Data Exchange Sequence
The SERVOPACK sends absolute data to the host controller when receiving output from
an absolute encoder. This data exchange sequence is described below.
Use the following detailed information when designing a host controller.
3