Omron CS1W-MC221 -, Operation Manual

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Setting the Origin With an Absolute Encoder Section 9-6
9-6 Setting the Origin With an Absolute Encoder
9-6-1 Procedure
Take the following steps to set up the absolute encoder.
Note When the battery is replaced or the encoder cable between the Servo Driver
and motor is removed for a long time, the absolute data may be lost.
9-6-2 Setting Up the Absolute Encoder
Purpose Absolute encoder setup is necessary when clearing the revolution count data
of the encoder to zero or after the encoder has been disconnected from the
battery over a period of time (for two days or more for OMRON U-series Abso-
lute Encoders, or for a few seconds for OMRON W- and G-series Absolute
Encoders). At the same time, the MC Unit must be initialized. This is because
the present value of the axis in the MC Unit must be set to zero when the rev-
olution count data of the absolute encoder has been reset.
Setup Procedure The following setup procedure is for OMRON U-series Servo Drivers.
The procedure for OMRON W-series or G-series Servo Drivers is different.
Refer to the
OMNUC W Series AC Servomotors/Servo Drivers User’s Manual
(Cat. No. I531) or the OMNUC G Series AC Servomotors/Servo Drivers
User’s Manual (Cat. No. I562) for details.
1,2,3... 1. Connect the battery and wire the Servo Driver, Servomotor, and Absolute
Encoder.
2. Turn ON the Servo Driver, select the Absolute Encoder with bit E of Cn-C1,
and set Cn-11 to the resolution of the Absolute Encoder.
3. Turn ON the Servo Driver SEN signal input.
With the MC Unit connected to the Servo Driver, turn ON the MC Unit and
the Servo Driver. The SEN signal from the MC Unit will turn ON.
Start
Set up the absolute encoder.
Move the axis to the origin.
Set the MC Unit absolute origin.
Yes
Yes
No
No
Is the absolute
encoder being installed
for the first time or
replaced?
Has the absolute
data of the absolute
encoder been lost?
(See note.)
(Refer to 9-6-3 Moving to the Origin .)
(Refer to 9-6-4 Setting the MC Unit Absolute Origin .)