28 Rockwell Automation Publication 750-TG100B-EN-P - June 2019
Chapter 2 Preventative Maintenance
An annual preventative maintenance program includes the following primary
tasks:
• A visual inspection of all components accessible from the front of the
Module
• Resistance checks on the power components
• Power-supply voltage level checks
• General cleaning and maintenance
• Tightness checks on all accessible power connections
See Chapter 3 - Component Inspection and Test Procedures on page 45
for
additional information on how to perform inspections and tests.
Predictive Maintenance
PowerFlex 750-Series Products with TotalFORCE Control contain algorithms
for predictive maintenance that are used to improve the “uptime” of machines,
processes, and facilities. These algorithms monitor the lifespan of certain
components and display the calculated value in specific parameters. These
algorithms can be used to alert personnel when the components are nearing the
end of their lifespan so the components can be replaced before they fail. The
shaded rows in Ta b le 3
…Tab le 5 on pages 29…37, respectively, identify the
components with predictive maintenance parameters. Use the predictive
maintenance parameters to determine a replacement schedule for the applicable
components. See Predictive Maintenance in the PowerFlex 750-Series Products
with TotalFORCE Control Reference Manual, publication 750-RM100
, for
more information.
Schedule Codes
Explanation
The codes that are listed in this table are used to identify the task that is
associated with the components that are identified in the tables on pages 29
…37.
IMPORTANT Failure to address predictive maintenance alarms can cause unexpected
downtime or premature product failure.
Code Task Description
I Inspect Inspect the component for signs of excessive accumulation of dust, dirt, or external
damage. For example, inspect the filters/fan inlet screens for debris that can block
the airflow path.
C Clean Clean the components that can be reused, specifically the door-mounted air filters
and fan inlet screens.
M Maintain This type of maintenance task can include an inductance test of line reactors/DC
links, or a full test of an isolation transformer, and so on.
R Replace This component has reached its mean operational life. Replace the component to
decrease the chance of failure. It is likely that components can exceed the designed
life in the drive, but component life is dependent on many factors such as usage and
heat.
Use the predictive maintenance parameters to determine a replacement schedule for
components in shaded table rows.
Rv Review A discussion with Rockwell Automation personnel is recommended to help
determine whether any of the enhancements/changes made to the drive hardware
and control could benefit the application.
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