Danfoss VLT AQUA Drive FC 200 Programming Manual page 182

Parameter Description
3 3
Figure 3.80 Quick Configuration
25-58 Run Next Pump Delay
Range:
0.1 s [0.1 - 5
*
s]
25-59 Run-on Line Delay
Range:
0.5 s [ par.
*
25-58 - 5 s]
3.22.5 25-8* Status
Readout parameters informing about the operating status
of the Cascade Controller and the pumps controlled.
25-80 Cascade Status
Range:
0 [0 - 0 ] Readout of the status of the Cascade Controller.
*
25-81 Pump Status
Range: Function:
0 [0 - Pump status shows the status for the number of
*
0 ] pumps selected in 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 current status of the pump.
3-156
Coast
Mains operation
200ms-2s (default 500ns)5 s
100ms
Function:
This parameter is only active if the option
selected in 25-50 Lead Pump Alternation is
different from [0] Off.
This parameter sets the time between stopping
the old variable-speed pump and starting
another pump as a new variable-speed pump.
Refer to 25-56 Staging Mode at Alternation, the
figure which describes staging and alternation.
Function:
This parameter is only active if the option
selected in 25-50 Lead Pump Alternation is
different from [0] Off.
This parameter sets the time between
stopping the old variable-speed pump and
starting this pump as a new fixed-speed
pump. Refer to for a description of staging
and alternation.
Function:
MG20O622 - VLT
®
VLT AQUA Drive Programming Guide
25-81 Pump Status
Range:
Time
25-82 Lead Pump
Time
Range:
0 [ 0 - par.
*
25-06 ]
25-83 Relay Status
Range:
0 [0 - 0 ] Readout of the status for each of the relays
*
25-84 Pump ON Time
Range:
0 h [0 -
*
2147483647 h]
25-85 Relay ON Time
Range:
0 h [0 -
*
2147483647 h]
®
is a registered Danfoss trademark
Function:
Example: Readout is with the abbreviation like "1:D
2:O". This means that Pump 1 is running and speed
controlled by the adjustable frequency drive 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:
assigned to control the pumps. Readout of the
status for each of the relays assigned to control the
pumps. Readout of the status for each of the relays
assigned to control the pumps. Readout of the
status for each of the relays assigned to control the
pumps.
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 25-84 Pump ON Time is reset. To use
25-04 Pump Cycling, the Cascade Controller
monitors the Relay ON time.