Biennial Inspections

Check the replacement date of the controller internal clock batteries every two years.

A controller contains a battery that maintains the date and time of the internal clock.

If the controller is turned off when the battery is low, the internal clock will be initialized. In this case, the time and date will be displayed incorrectly, and the Change Battery error will be erroneously displayed. In addition, an error might occur, leading to immediate stop during motion.

The lifetime of the internal clock battery is 10 years. At the biennial inspection, check the battery's replacement timing. If the replacement timing is prior to the next inspection, before the replacement timing elapses, please contact DENSO Robot Service division or the dealer where you have purchased the controller.

For how to confirm the battery replacement date, refer to "Displaying and Changing Controller Battery Maintenance Schedule Screen" in Smart TP Operation Guide, or "Setting the next Battery Replacement Date".