
5.PERIODIC MAINTENANCE OF SVPM START-UP PROCEDURE FOR βi SVPM B-65325EN/01
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5.1 BATTERY FOR THE ABSOLUTE PULSECODER
The battery unit for the absolute Pulsecoder can be connected using
[Connection scheme 1] and [Connection scheme 2] explained below.
[Connection scheme 1]
Supplying power from one battery unit to more than one SVPM
SVPM
Battery case
A06B-6050-K060
Battery
A06B-6050-K061
Connector
A06B-6130-K201
CX5X
• If a low battery voltage or a battery voltage of 0 V is indicated by
an APC (absolute Pulsecoder) alarm, replace the battery.
If a battery voltage of 0 V is indicated, you need to make a zero
point return.
• The absolute Pulsecoder of the βis series servo motors
(β
0.4/5000iS to β
22/2000iS) is incorporated with a backup
capacitor as standard. This backup capacitor enables an absolute
position detection to be continued for about 10 minutes.
Therefore, no zero point return need be performed if the time
during which servo amplifier power is kept off for battery
replacement is within 10 minutes.
On the contrary, the absolute Pulsecoder of the β series servo
motors is not incorporated with a backup capacitor. Be careful
when replacing the battery for this Pulsecoder. See [Caution No. 1
for battery replacement] at the end of this section for details.
• The service life of the batteries is about two years if they are used
in a six-axis configuration with βis series servo motors
(β
0.4/5000iS to β
22/2000iS) and one year if they are used in a
six-axis configuration with β series servo motors.
FANUC recommends that you replace the batteries periodically
according to the battery service life.
• The battery unit consists of four R20 alkaline batteries.
Commercial batteries can be used in the battery unit. The optional
battery offered by FANUC is A06B-6050-K061.