Danfoss VLT HVAC Drive FC 102, Programming Manual, Page: 174 / 250

22-83 Speed at No-Flow [RPM]
Range: Function:
Size
related
*
[ 0 -
par.
22-85
RPM] Resolution 1 RPM.
Enter the speed of the motor in RPM at
which flow is zero and minimum pressure
H
MIN
is achieved. Alternatively, enter the
speed in Hz in parameter 22-84 Speed at No-
Flow [Hz] . If it has been decided to use RPM
in parameter 0-02 Motor Speed Unit ,
parameter 22-85 Speed at Design Point [RPM]
should also be used. Closing the valves and
reducing the speed until minimum pressure
H
MIN
is achieved determines this value.
22-84 Speed at No-Flow [Hz]
Range: Function:
Size
related
*
[ 0 -
par.
22-86
Hz] Resolution 0.033 Hz.
Enter the motor speed in Hz at which flow
has effectively stopped and minimum
pressure H
MIN
is achieved. Alternatively,
enter the speed in RPM in
parameter 22-83 Speed at No-Flow [RPM] . If it
has been decided to use Hz in
parameter 0-02 Motor Speed Unit ,
parameter 22-86 Speed at Design Point [Hz]
should also be used. Closing the valves and
reducing the speed until minimum pressure
H
MIN
is achieved determines this value.
22-85 Speed at Design Point [RPM]
Range: Function:
Size
related
*
[ par.
22-83 -
60000
RPM] Resolution 1 RPM.
Only visible when parameter 22-82 Work
Point Calculation is set to [0] Disabled . Enter
the motor speed in RPM at which the
system design working point is achieved.
Alternatively, enter the speed in Hz in
parameter 22-86 Speed at Design Point [Hz] .
If it has been decided to use RPM in
parameter 0-02 Motor Speed Unit ,
parameter 22-83 Speed at No-Flow [RPM]
should also be used.
22-86 Speed at Design Point [Hz]
Range: Function:
Size
related
*
[ par.
22-84 -
par. 4-19
Hz] Resolution 0.033 Hz.
Only visible when parameter 22-82 Work
Point Calculation is set to [0] Disabled . Enter
the motor speed in Hz at which the system
design working point is achieved. Alterna-
tively, enter the speed in RPM in
parameter 22-85 Speed at Design Point
[RPM]
. If it has been decided to use Hz in
parameter 0-02 Motor Speed Unit ,
22-86 Speed at Design Point [Hz]
Range: Function:
parameter 22-83 Speed at No-Flow [RPM]
should also be used.
22-87 Pressure at No-Flow Speed
Range: Function:
0
*
[ 0 - par. 22-88 ] Enter the pressure H
MIN
corresponding to
speed at no-flow in reference/feedback
units.
22-88 Pressure at Rated Speed
Also see parameter 22-82 Work Point Calculation .
Range: Function:
999999.999
*
[ par. 22-87 -
999999.999 ] Enter the value corresponding
to the pressure at rated speed,
in reference/feedback units.
This value can be defined
using the pump datasheet.
22-89 Flow at Design Point
Also see parameter 22-82 Work Point Calculation .
Range: Function:
0
*
[0 - 999999.999 ] Enter the value corresponding to the flow
at design point. No units necessary.
22-90 Flow at Rated Speed
Also see parameter 22-82 Work Point Calculation .
Range: Function:
0
*
[0 - 999999.999 ] Enter the value corresponding to flow at
rated speed. This value can be defined
using the pump data sheet.
Parameter Descriptions
VLT
®
HVAC Drive FC 102
172 Danfoss A/S © 03/2015 All rights reserved. MG11CE02
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