2. Absolute pulse coder battery replacement
When replacing the memory backup batteries, keep the
power to the machine (CNC) turned on, and apply an
emergency stop to the machine. Because this work is
performed with the power on and the cabinet open, only
those personnel who have received approved safety and
maintenance training may perform this work.
When replacing the batteries, be careful not to touch the
high–voltage circuits (marked
and fitted with an
Touching the uncovered high–voltage circuits presents
an extremely dangerous electric shock hazard.
The absolute pulse coder uses batteries to preserve its
If the battery voltage drops, a low battery voltage alarm is
displayed on the machine operator’s panel or Zscreen.
When a low battery voltage alarm is displayed, replace the
batteries within a week. Otherwise, the absolute position data
held by the pulse coder will be lost.
Refer to the SERVO MOTOR α series Maintenance Manual or
SERVO MOTOR β series Maintenance Manual.