Danfoss FC 100 Series Operating Instructions Manual page 93

How to Programme the Frequ...
22-82 Work Point Calculation
Option: Function:
[1] Enabled Enabled [1] : Work Point Calculation is active.
Enabling this parameter allows the calculation of the
unknown System Design Working Point at 50/60 Hz
speed, from the input data set in par. 22-83 Speed at
No-Flow [RPM] par. 22-84 Speed at No-Flow [Hz],
par. 22-87 Pressure at No-Flow Speed,
par. 22-88 Pressure at Rated Speed, par. 22-89 Flow at
Design Point and par. 22-90 Flow at Rated Speed.
22-83 Speed at No-Flow [RPM]
Range: Function:
Applica- [Applica- Resolution 1 RPM.
tion tion The speed of the motor at which flow Is
depend- dependant] zero and minimum pressure H
ent achieved should be entered here in RPM.
*
Alternatively, the speed in Hz can be
entered in par. 22-84 Speed at No-Flow
[Hz]. If it has been decided to use RPM in
par. 0-02 Motor Speed Unit then
par. 22-85 Speed at Design Point [RPM]
should also be used. Closing the valves
and reducing the speed until minimum
pressure H
this value.
22-84 Speed at No-Flow [Hz]
Range: Function:
Applica- [Applica- Resolution 0.033 Hz.
tion tion
The speed of the motor at which flow
depend- dependant]
has effectively stopped and minimum
ent
*
pressure H
entered here in Hz. Alternatively, the
speed in RPM can be entered in
par. 22-83 Speed at No-Flow [RPM]. If it
has been decided to use Hz in
par. 0-02 Motor Speed Unit then
par. 22-86 Speed at Design Point [Hz]
should also be used. Closing the valves
and reducing the speed until minimum
pressure H
this value.
22-85 Speed at Design Point [RPM]
Range: Function:
Application [Applica- Resolution 1 RPM.
depend- tion
Only visible when par. 22-82 Work Point
ent dependant]
*
Calculation is set to Disable. The speed
of the motor at which the System
Design Working Point is achieved should
be entered here in RPM. Alternatively,
the speed in Hz can be entered in
par. 22-86 Speed at Design Point [Hz]. If it
has been decided to use RPM in
®
VLT HVAC Drive Operating Instructions
is
MIN
is achieved will determine
MIN
is achieved should be
MIN
is achieved will determine
MIN
®
MG.11.AD.02 - VLT is a registered Danfoss trademark
22-85 Speed at Design Point [RPM]
Range: Function:
par. 0-02 Motor Speed Unit then
par. 22-83 Speed at No-Flow [RPM]
should also be used.
22-86 Speed at Design Point [Hz]
Range: Function:
Application [Applica- Resolution 0.033 Hz.
depend- tion
Only visible when par. 22-82 Work Point
ent dependant]
*
Calculation is set to Disable. The speed
of the motor at which the System
Design Working Point is achieved should
be entered here in Hz. Alternatively, the
speed in RPM can be entered in
par. 22-85 Speed at Design Point [RPM]. If
it has been decided to use Hz in
par. 0-02 Motor Speed Unit, then
par. 22-83 Speed at No-Flow [RPM]
should also be used.
22-87 Pressure at No-Flow Speed
Range: Function:
0.000 [Application Enter the pressure H
*
dependant]
ing to Speed at No Flow in
Reference/Feedback Units.
Please also see par. 22-82 Work Point Calculation point D.
22-88 Pressure at Rated Speed
Range:
999999.999 [Application Enter the value corresponding to
*
dependant] the Pressure at Rated Speed, in
Reference/Feedback Units. This
value can be defined using the
pump datasheet.
Please also see par. 22-82 Work Point Calculation point A.
22-89 Flow at Design Point
Range:
0.000 [0.000 - 999999.999 ] Enter the value corresponding to
*
Please also see par. 22-82 Work Point Calculation point C.
22-90 Flow at Rated Speed
Range: Function:
0.000 [0.000 - 999999.999 ] Enter the value corresponding to
*
Flow at Rated Speed. This value can
be defined using the pump
datasheet.
correspond-
MIN
Function:
Function:
the Flow at Design Point. No units
necessary.
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