Replacement Of Position Detector (Or Encoder) Batteries - Toshiba TH180 Maintenance Manual

2.3.8 Replacement of Position Detector (or Encoder) Batteries

To back up the data of the position detector attached to each motor, batteries are
used.
The battery life changes with the controller power OFF time. When the controller is
operated at a rate of eight (8) hours per day, the calculated life is approximately two
(2) years which may vary, however, with the operating condition, ambient
temperature, etc. Be sure to replace the batteries, therefore, at the time of yearly
inspection. For the replacing procedures, see the descriptions below.
Note: The battery alarm comes in the two (2) types; battery warning alarm (Battery
alarm) and battery error (Encoder abnormal).
Normally, when the battery warning alarm has generated, the battery error
can be avoided by replacing the batteries with new ones. When this
happens, however, the battery error (Encoder abnormal) will occur within one
(1) month after generation of the battery warning alarm.
If the time of battery replacement is delayed, the battery error will generate
and the robot may not be moved at all.
Once the battery error has been detected, the robot enters an emergency
stop state, and reset of the encoder error is required.
(For how to reset the encoder error, see the Appendix B of this manual.
Be sure to replace the batteries at the time of annual inspection.
The following messages are displayed at the time of battery error.
Error code
8-601
8-602
8-603
8-604
8-605
If any of these errors is displayed, counter skipping may be occurring due to
insufficient battery power. Change the battery. If changing the battery does
not correct the problem and the error is still displayed, the encoder may be
faulty. In such a case, change the motor.
Description
Axis1 Enc multi count err
Axis2 Enc multi count err
Axis3 Enc multi count err
Axis4 Enc multi count err
Axis5 Enc multi count err
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MAINTENANCE MANUAL
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