25-29 Destage Function
Option:
Function:
The Destage Function ensures that the lowest numbers of pumps are running to save energy and
to avoid dead head water circulation in the variable speed pump. If the Destage Function is set to
Disabled
[0], the par. 25-30
Destage Function Time
will not be activated.
[0]
Disabled
[1] *
Enabled
25-30 Destage Function Time
Range:
Function:
15 s*
[0 - 300 s]
The Destage Function Timer is programmable to avoid frequent staging/destaging of the fixed speed
pumps. The Destage Function Time starts when the adjustable speed pump is running at
par. 4-11
Motor Speed Low Limit [RPM]
or par. 4-12
Motor Speed Low Limit [Hz]
, with one or more
fixed speed pumps in operation and system requirements satisfied. In this situation, the adjustable
speed pump contributes a little to the system. When the programmed value of the timer expires, a
stage is removed, avoiding dead head water circulation in the adjustable speed pump.
VLT
p
Automation VT Drive FC322
Programming Guide
2 Parameter Description
MG.20.W1.22 - VLT
p
is a registered Danfoss trademark
245
2
Remote Site Products - 1-888-532-2706 - www.remotesiteproducts.com
http://www.remotesiteproducts.com/p-20772-Danfoss-131X8135-VLT-Automation-VT-Drive-VFD-FC322-230V-5-HP.aspx