23-12 Maintenance Time Base
Option: Function:
Select the time base to be associated with the Preventive Maintenance Event.
[0]
*
Disabled
Disabled
[0] must be used when disabling the Preventive Maintenance Event.
[1] Running Hours
Running Hours
[1] is the number of hours the motor has been running. Running hours are not reset at power-
on. The
Maintenance Time Interval
must be specified in par. 23-13.
[2] Operating Hours
Operating Hours
[2] is the number of hours the frequency converter has been running. Operating hours are not
reset at power-on. The
Maintenance Time Interval
must be specified in par. 23-13.
[3] Date & Time
Date & Time
[3] uses the internal clock. The date and time of the next maintenance occurrence must be specified
in par. 23-14
Maintenance Time and Date
.
23-13 Maintenance Time Interval
Range: Function:
1 h
*
[1 to 2147483647 h]
Set the interval associated with the current Preventive Maintenance Event. This parameter is only used if
Running
Hours
[1] or
Operating Hours
[2] is selected in par. 23-12
Maintenance Time Base
. The timer is reset from par.
23-15
Reset Maintenance Word
.
Example:
A Preventive Maintenance Event is set up Monday at 8:00.
Par. 23-12 Maintenance Time Base
is
Operating
hours
[2] and
par 23-13 Maintenance Time Interval
is 7 x 24 hours=168 hours. Next Maintenance Event will be
indicated the following Monday at 8:00. If this Maintenance Event is not reset until Tuesday at 9:00, the next
occurrence will be the following Tuesday at 9:00.
23-14 Maintenance Date and Time
Range: Function:
2000-01-01 00:00
*
[2000-01-01
00:00]
Set the date and time for next maintenance occurrence if the Preventive Maintenance Event is based on date/
time. Date format depends on the setting in par. 0-71
Date format
, while the time format depends on the setting
in par. 0-72
Time format
.
NB!
The frequency converter has no back up of the clock function and the set date/time will reset
to default (2000-01-01 00:00) after a power down. In par. 0-79,
Clock Fault
, it is possible to
program for a Warning in case the clock has not been set properly, e.g. after a power down.
The time set must be at least one hour from the actual time!
NB!
When mounting an Analog I/O MCB109 option card, a battery back up of the date and time is
included.
23-15 Reset Maintenance Word
Option: Function:
Set this parameter to
Do reset
[1] to reset the Maintenance Word in par. 16-96
Prev. Maintenance Word
and
reset the message displayed in the LCP. This parameter will change back to
Do not reset
[0] when pressing OK.
[0]
*
Do not reset
[1] Do reset
NB!
When messages are reset - Maintenance Item, Action and Maintenance Date/Time are not cancelled.
Par. 23-12, Maintenance Time
Base
is set to Disabled [0].
VLT
®
HVAC Drive Programming Guide 3. Parameter Description
MG.11.C5.02 - VLT
®
is a registered Danfoss trademark
193
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