2.4 Check of battery
2-13
Replacing battery
Contact your maintenance stuff if the Alarm LED light up or blink on DC UPS module and
request to manage replacing battery.
2.4.4
Battery for absolute encoder
Backup battery is requested for the motor with absolute encoder in order to keep the position
value also during power-off.
Necessity of backup battery for absolute encoder is determined by installed motor type.
Please refer to the documents published by machine tool builder.
Battery type
3.6V lithium battery 2000mAh
Type: ER6VC3N
Battery life
Battery life may change depending on operating status. Therefore, typical value is described
below.
Estimated life expectancy is 11.4 years a motor encoder under the conditions with 20 degree
temperature and without control power supply. This life time is normally extended because
battery hardly discharge during control power supply ON.
• When replacing battery module for UPS, following term must be taken in account.
• Qualified personnel may only perform maintenance.
• Before carrying out any maintenance and service work, the equipment must be disconnected from main
power supply and the main power switch must be fixed on OFF position.
• The service intervals and the instructions for repair and replacement must be strictly followed.
• Fuse on new battery module must not be inserted into socket before completion of work.
• Use battery module for UPS with same order number as the battery installed before replacement.
When operating electrical devices, it is impossible to avoid applying hazardous voltages to certain parts of
the equipment. Failure to properly maintain the equipment can result in death, serious body injury or
substantial material damage.
• Fuse on battery module must be removed before maintenance work.
Otherwise, death, serious body injury or substantial material damage could result.
WARNING
INFO