Fanuc alarm: 306 - APC alarm: nth-axis battery voltage 0

CNC Machine Control Manufacturer
Fanuc
Control Model
16/18/21, 16i/18i/21i, 160i/180i/210i, 0/00/0-mate, 0i
306 - APC alarm: nth-axis battery voltage 0

Alarm Description

nth-axis (n=1-8) APC battery voltage has decreased to a low level so that the data cannot be held. APC alarm. Battery or cable may be faulty.

Additional Suggestions & Alarm Clarification

1. First replace the batteries if they drain quickly you must determine which pulse coder or cable is shorted and drawing the battery down. (APC)=Absolute pulse coder. 2. Occurs immediately after power on when a cable or encoder was disconnected from the battery. Power down and up again to clear battery voltage 0 alarm

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