IAI R-unit RSEL, Instruction Manual, Page: 503 / 844

Chapter 9 Special Functions
9.2 PSA-24 Communication Monitor
9-10
ME0392-4C
For the operation of teaching tool, refer to the following instruction manual.
• PC dedicated teaching software instruction manual (ME0398)
• Touch Panel Teaching Pendant TB-02 instruction manual (ME0356)
• Touch Panel Teaching Pendant TB-03 instruction manual (ME0377)
9.3 Preventive Maintenance Function
ME0392-4C
9-11
9.3 Preventive Maintenance Function
9.3.1 Electrolytic Capacitor Life Prediction
The temperature on the electrolytic capacitor in the RSEL unit can be monitored and the life can
be calculated.
There should be a message level alarm (Alarm Code 203 “Presumed Life Passed Warning”)
generated when the capacitance of the electrolytic capacitor has dropped by 20%. When an
alarm is generated, although the capacity of the capacitor is not zero (dried-out), we
recommend replacing it as soon as possible.
9.3.2 Capacitor for Calendar Feature Life Prediction
The temperature of the capacitor for the RSEL unit calendar function is monitored to calculate
the service life.
There should be a message level alarm (Alarm Code 203 “Presumed Life Passed Warning”)
generated when the capacitance of the capacitor has dropped by 50% for the calendar feature.
When an alarm is generated, although the capacity of the capacitor is not zero (dried-out), we
recommend replacing it as soon as possible.