YASKAWA SIEMENS CNC Series, Maintenance Manual, Serviceman Handbook

Page: 337 / 373

Maintenance and Check
16.3.1 Replacing a battery in the Absolute encoder
16-8
16.3 Absolute encoder
16.3.1 Replacing a battery in the Absolute encoder
If the voltage of the Absolute encoder battery decreases to 2.7V or less, the SERVOPACK
issues a "Battery warning (A.93)".
Replace the battery in the following procedure. For the recommended Absolute encoder bat-
teries, refer to 16.3.2 "Handling a battery".
„ Procedure to replace a battery
1. Replace the battery with SERVOPACK control power turned on.
2. The "Battery warning (A.93)" will be released automatically after the battery has been
replaced.
3. Verify that the encoder works correctly. This completes the battery replacement.
If the battery is disconnected (the encoder cable is disconnected) with the SERVOPACK control power
turned off, the Absolute encoder data is cleared and you will have to set up the Absolute encoder again.
Refer to 16.3.3 "Setting up (Initializing) Absolute encoder".
16.3.2 Handling a battery
In order for the Absolute encoder to hold the position information even while the power is
turned off, a back-up battery is required. We recommend the following battery for this pur-
pose.
Type: ER6VC3 (Lithium battery)
3.6 V 2000 mAH
Toshiba Battery
IMPORTANT
Converter
Battery
compartment
Battery
connecter