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2 Parameter Description
25-80 Cascade Status
Range:
0*
[0 - 0 ]
25-81 Pump Status
2
Range:
0*
[0 - 0 ]
25-82 Lead Pump
Range:
0*
[Application dependant]
25-83 Relay Status
Array [2]
Range:
0*
[0 - 0 ]
25-84 Pump ON Time
Array [2]
Range:
0 h*
[0 - 2147483647 h]
25-85 Relay ON Time
Array [2]
Range:
0 h*
[0 - 2147483647 h]
25-86 Reset Relay Counters
Option:
[0] *
Do not reset
[1]
Do reset
252
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Function:
Read out of the status of the Cascade Controller.
Function:
Pump Status shows the status for the number of pumps selected in par. 25-06
It is a readout of the status for each of the pumps showing a string, which consists of pump number
and the current status of the pump.
Example: Readout is with the abbreviation like "1:D 2:O" This means that pump 1 is running and
speed controlled by the frequency converter and pump 2 is stopped.
Function:
Readout parameter for the actual variable speed pump in the system. The Lead Pump parameter is
updated to reflect the current variable speed pump in the system when an alternation takes place.
If no lead pump is selected (Cascade Controller disabled or all pumps interlocked) the display will
show NONE.
Function:
Read out of the status for each of the relays assigned to control the pumps. Every element in the
array represents a relay. If a relay is activated, the corresponding element is set to "On". If a relay
is deactivated, the corresponding element is set to "Off".
Function:
Readout of the value for Pump ON Time. The Cascade Controller has separate counters for the
pumps and for the relays that control the pumps. Pump ON Time monitors the "operating hours" of
each pump. The value of each Pump ON Time counter can be reset to 0 by writing in the parameter,
e.g. if the pump is replaced in case of service.
Function:
Readout of the value for Relay ON time. The Cascade Controller has separate counters for the pumps
and for the relays that control the pumps. Pump cycling is always done based on the relay counters,
otherwise it would always use the new pump if a pump is replaced and its value in par. 25-84
ON Time
is reset. In order to use par. 25-04
Relay ON time.
Function:
Relay ON Time
Resets all elements in par. 25-85
MG.20.W1.22 - VLT is a registered Danfoss trademark
VLT Automation VT Drive FC322
Programming Guide
Number of Pumps
Pump Cycling
the Cascade Controller is monitoring the
counters.
.
Pump
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