25-59 Run on Mains Delay
Range: Function:
0.5 sec
*
[Par. 25-58 – 5.0 sec ]
This parameter is only active if the option selected in
Lead Pump Alternation
, par. 25-50, is different from
Off
[0].
This parameter sets the time between stopping the old variable speed pump and starting this pump as a new
fixed speed pump. Refer to
Staging Mode and Alternation
, par. 25-56, and Figure 7-5 for description of staging
and alternation.
3.23.6. 25-8* Status
Readout parameters informing about the operating status of the cascade controller and the pumps controlled.
25-80 Cascade Status
Option: Function:
Read out of the status of the Cascade Controller.
Disabled Cascade Controller is disabled
par. 25-00, Cascade Controller
, .
Emergency All pumps have been stopped by means of a Coast/Coast inverse or an External Interlock command applied to
the frequency converter.
Off All pumps have been stopped by means of a Stop command applied to the frequency converter.
In Open Loop
Par. 1-00, Configuration Mode
, has been set for Open Loop. All fixed speed pumps are stopped. The variable
speed pump will continue to run.
Frozen Staging/destaging of pumps has been locked and reference locked.
Jogging All fixed speed pumps are stopped. When stopped, the variable speed pump will run at jog speed.
Running A Start command is applied to the frequency converter and the cascade controller is controlling the pumps.
Running FSBW The frequency converter is tripped off and the Cascade Controller is controlling the fixed speed pumps based
on
par. 25-22, Fixed Speed Bandwidth
.
Staging The Cascade Controller is staging fixed speed pumps.
Destaging The Cascade Controller is destaging fixed speed pumps.
Alternating The
par. 25-50, Lead Pump Alternation
, selection is different than
Off
[0] and an alternating sequence is taking
place.
Lead Not Set No pump available to be assigned as variable speed pump.
25-81 Pump Status
Option: Function:
Pump Status shows the status for the number of pumps selected in
par. 25-01, 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.
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.
[X] Disabled The pump is interlocked either via
par. 25-19, Pump Interlock
, or signal on a digital input programmed for Pump
(number on pump) Interlock in
par. 5-1*, Digital Inputs
, . Can only refer to fixed speed pumps.
[O] Off Stopped by the cascade controller (but not interlocked).
[D] Running on Frequency
Converter
Variable speed pump, regardless if connected directly or controlled via relay in the frequency converter.
[R] Running on Mains Running on mains. Fixed speed pump running.
3. Parameter Description VLT
®
HVAC Drive Programming Guide
220
MG.11.C5.02 - VLT
®
is a registered Danfoss trademark
3
To Next Page
Loading...
Need help?
General