Operating instructions
3.21.2 23-1* Maintenance
Wear and tear calls for periodic inspection and service of
elements in the application, e.g. motor bearings, feedback
sensors and seals or filters. With Preventive Maintenance the
service intervals may be programmed into the frequency
converter. The frequency converter will give a message when
maintenance is required. 20 Preventive Maintenance Events
can be programmed into the frequency converter. For each
Event the following must be specified:
•
Maintenance item (e.g. “Motor Bearings”)
•
Maintenance action (e.g. “Replace”)
•
Maintenance Time Base (e.g. “Running Hours” or a
specific date and time)
•
Maintenance Time Interval or the date and time of
next maintenance
NOTE
To disable a Preventive Maintenance Event the associ-
ated par. 23-12 Maintenance Time Base must be set to
Disabled [0].
Preventive Maintenance can be programmed from the LCP,
but use of the PC-based VLT Motion Control Tool MCT10 is
recommended.
The LCP indicates (with a wrench-icon and an “M”) when it is
time for a Preventive Maintenance Action, and can be
programmed to be indicated on a digital output in parameter
group 5-3*. The Preventive Maintenance Status may be read in
par. 16-96 Maintenance Word. A Preventive Maintenance
indication can be reset from a digital input, the FC bus or
manually from the LCP through par. 23-15 Reset Maintenance
Word.
A Maintenance Log with the latest 10 loggings can be read
from parameter group 18-0* and via the Alarm log button on
the LCP after selecting Maintenance Log.
NOTE
The Preventive Maintenance Events are defined in a 20
element array. Hence each Preventive Maintenance
Event must use the same array element index in
par. 23-10 Maintenance Item to par. 23-14 Maintenance
Date and Time.
Parameter Description
VLT
®
HVAC Drive Programming Guide
MG.11.CA.02 - VLT
®
is a registered Danfoss trademark 153
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