Omron CS1W-MC221 -, Operation Manual

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Setting the Origin With an Absolute Encoder Section 9-6
The Absolute Encoder will receive a 5-V power supply. Leave the power
ON for at least 3 minutes to fully charge the backup capacitor. Do not issue
servo-lock commands from the MC Unit during this operation.
4. Turn OFF the Power of Servo Driver and MC Unit, then disconnect the en-
coder connector.
5. Short-circuit the encoder connector terminals 13 and 14 for one to two sec-
onds if the Absolute Encoder is a 30- to 750-W model. Short-circuit the en-
coder connector terminals R and S for two minutes or more if the Absolute
Encoder is a 1- to 5-kW model.
Note If the Absolute Encoder is a 1 to 5-kW model, check the voltage between ter-
minals R and S on the Servomotor side after the terminals have been short-
circuited for two minutes or more and the short-circuiting wire has been
removed. If the voltage is more than 0.4 V then, short-circuit the terminals
again.
6. Reconnect the encoder connector.
7. Turn ON the Servo Driver first and then the MC Unit. Then, initialize the MC
Unit.
9-6-3 Moving to the Origin
Use either of the following methods to move to the origin.
• Perform an origin search.
• Execute jogging without an origin search.
Performing an Origin Search
1,2,3... 1. Set the system to the servo-lock state.
At this point, the MC Unit will read the absolute position from the Absolute
Encoder. The absolute data read will be used to determine a tentative ori-
gin.
2. Perform an origin search.
Refer to page 466 Using Incremental Encoders to perform the origin
search.
MC Unit
Turn ON SEN
signal
Battery
Motor (Encoder)
Servo Driver
30- to 750-W model 1- to 5-kW model
Short-circuit terminals 13 and
14 for 1 to 2 s. Short-circuit terminals R and S
for 2 min or more.