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MSL600
Installation, Operation & Maintenance Manual
IP262/Z0, Rev. AB
February 2012
7.3.3 Stop If - P252
Use this parameter to select if it is necessary to override the “Stop on” condition.
The selectable options are:
x Not used
x Sludge Level
The parameter defaults to none which means it is not used.
Parameter values:
Default Min Max
None - -
7.3.4 Start Time - P253
This is the time of the day at which the first de-sludge operation starts. The time is programmed in hours and
minutes. This parameter is set up in conjunction with the de-sludge Interval P254.
Parameter values:
Default Min Max
07:00 - -
7.3.5 Interval - P254
The parameter is the interval between de-sludge events.
After a start time has been programmed, the interval between each de-sludge needs to be programmed.
For example, if it is required that the de-sludge cycle starts at 7:00am each morning then 07:00 is entered in P253.
If it is then required that a de-sludge cycle is carried out every hour thereafter, 01:00 is entered in P254.
Parameter values:
Default Min Max
01:00 - -
7.3.6 Max Retries - P257
This parameter is the maximum number of retries allowed following an unsuccessful de-sludge cycle. If the
maximum retries is exceeded, and a relay is programmed, and allocated in alarm mode, it can be used to signal
this fact.
A retry occurs if the start condition is still present when the stop condition occurs or if a relay maximum run time is
exceeded and the stop condition has not been reached.
To prevent a relay from remaining on, the relay minimum off time must be programmed (see P415).
Parameter values:
Default Min Max
10 0 250