Danfoss VLT FC 102 Programming Manual page 248

Parameter Descriptions
3.23.5 25-8* Status
Readout parameters informing about the operating status
of the cascade controller and the pumps controlled.
25-80 Cascade Status
3 3
Range:
0
*
25-81 Pump Status
Range:
0
*
25-82 Lead Pump
Range:
0
*
25-06 ]
25-83 Relay Status
Array [9]
Range:
0
*
25-84 Pump ON Time
Array [10]
Range:
0 h
*
2147483647 h]
246
Function:
[0 - 25 ] Readout of the status of the
cascade controller.
Function:
[0 - 25 ] Pump status shows the status for
the number of pumps selected in
parameter 25-06 Number of Pumps.
It is a readout of the status for each
of the pumps showing a string,
which consists of pump number
and the 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:
[ 0 - par. 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 shows N1.
Function:
[0 - 4 ] Readout of the status for each of
the relays assigned to control the
pumps. Every element in the array
shows 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:
[0 - Readout of the value for pump ON
time. The cascade controller has
separate counters for the pumps
and for the relays that control the
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VLT HVAC Drive FC 102
25-84 Pump ON Time
Array [10]
Range:
25-85 Relay ON Time
Array [9]
Range:
0 h
*
25-86 Reset Relay Counters
Option:
[0]
*
[1]
Function:
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, for
example, if the pump is replaced at
a service.
Function:
[0 - Readout of the value for relay ON
2147483647 h] 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
parameter 25-84 Pump ON Time is
reset. To use parameter 25-04 Pump
Cycling, the cascade controller is
monitoring the relay ON time.
Function:
Resets all elements in
parameter 25-85 Relay ON Time
counters.
Do not reset
Do reset
M0010001