Setting Up A 12-Bit Absolute Encoder; Battery; Absolute Encoder Setup Procedure - YASKAWA SGM Series User Manual

Application

5.3.2 Absolute Encoder Setup Procedure

5.3 Setting Up a 12-bit Absolute Encoder

5.3.1 Battery

5.3.2 Absolute Encoder Setup Procedure
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An absolute encoder requires a battery in order to save position data in the event of a power inter-
ruptions.
D We recommend the following battery.
One lithium battery: ER6VC 3.6 V battery made by Toshiba Battery Co., Ltd.
D Make sure the battery is installed securely so that environmental changes or changes over
time will not cause a loss of contact.
D The battery voltage is not monitored inside the SERVOPACK (with 12 bit absolute encoder).
Provide a battery voltage monitor circuit as necessary.
Minimum voltage: 3.3 V
D See 12.1.3 Replacing the Battery for more details on battery replacement.
The encoder needs to be set up to clear the cumulative rotation number to zero to set up the motor,
or when the absolute encoder has been left disconnected from a battery for more than two days.
J Setup Procedure
Follow the setup procedure described below. Failure to follow the procedure exactly as written
may result in problems.
1. Turning ON SERVOPACK Power
• Wire the SERVOPACK, motor, and encoder together correctly.
Connect the battery and turn ON the SERVOPACK.
• Send the SENS_ON command by MECHATROLINK communication (encoder power
ON). Then leave the SERVOPACK turned ON for at least thirty minutes to sufficiently
charge the backup capacitor.
2. Resetting Data
• Turn OFF the SERVOPACK, and disconnect the encoder connector.
• Short encoder terminals 13 and 14 together for 1 to 2 seconds. (SGM and SGMP Servo-
motors with 12-bit absolute encoder)
• Short the R and S encoder connector terminals for at least two minutes. (SGMG, SGMD
and SGMS Servomotors with 15-bit absolute encoder)
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