
B–63503EN/02
4. POWER SUPPLY CONNECTION
42
One battery unit can maintain current position data for six absolute pulse
coders for a year.
When the voltage of the battery becomes low, APC alarms 3n6 to 3n8 (n:
axis number) are displayed on the CRT display. When APC alarm 3n7
is displayed, replace the battery as soon as possible. In general, the battery
should be replaced within two or three weeks, however, this depends on
the number of pulse coders used.
If the voltage of the battery becomes any lower, the current positions for
the pulse coders can no longer be maintained. Turning on the power to
the control unit in this state causes APC alarm 3n0 (reference position
return request alarm) to occur. Return the tool to the reference position
after replacing the battery.See Subsec. 7.1.3 for connecting the battery for
separate absolute pulse coders.
4.4.2
Battery for Separate
Absolute Pulse Coders
(6VDC)