Rockwell Automation Publication ICSTT-RM406J-EN-P - February 2021 15
Chapter 2
Preventive Maintenance
Safety systems are designed to run continuously without manual intervention.
However, some manual preventive maintenance must be done to make sure
the system stays available and healthy.
This chapter describes the preventive maintenance activities for an
AADvance® controller.
Preventive Maintenance
Schedule
The preventative maintenance tasks must be done at the following intervals:
ARC FLASH HAZARD: ARCS AND EXPLOSION RISK IN HAZARDOUS AREAS
If you connect or disconnect wiring, modules or communications cabling
while power is applied, an electrical arc can occur. This could cause an
explosion in hazardous location installations. Do not remove wiring,
fuses, modules or communications cabling while circuit is
energized unless area is known to be non-hazardous.
Failure to follow these instructions may cause personal injury.
Table 1 - Recommended Schedule for Preventive Maintenance
Preventive Maintenance Task Interval
Review status indicators Daily
Examine fuses 3 months
Examine wiring terminals 3 months
Examine seating of plug-in components 3 months
Look for contamination, examine general condition and make sure
there is sufficient environmental protection
3 months
Measure resistance of the ground connection 3 months
Measure analogue input module calibration values 2 years
Measure analogue output module calibration values 2 years
Measure digital input module calibration values 3 years
Measure digital output module calibration values 3 years
Do a manual test Manual Test Interval
NOTE All modules are returned to Rockwell Automation® for calibration.
To return a module see Return a Module
on page 12.
IMPORTANT
Testing of the logic solver and its related field devices must be
carried out according to the applicable plant or process safety
analysis and the safety integrity validation. The manual test
interval is used by the Probability of Failure on Demand (PFD)
data analysis as part of the certification process.
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