Danfoss ADAP-KOOL Drive, Руководство по программированию

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η
STAGE
% =
η
LOW
η
HIGH
× 100 %
to 100%, where n
LOW
is Motor Speed Low Limit and n
HIGH
is Motor Speed High Limit.
25-43 Destaging Threshold
Range: Function:
50%* [0 – 100%] When removing a fixed speed compressor, in order to prevent an undershoot of pressure, the var-
iable speed compressor ramps up to a higher speed. When the variable speed compressor reaches
the “Destaging Speed” the fixed speed compressor is destaged. The Destaging Threshold is used
to calculate the speed of the variable speed compressor when the destaging of the fixed speed
compressor occurs. The calculation of the Destaging Threshold is the ratio of
Motor Speed Low
Limit
, par. 4-11 or 4-12, to the
Motor Speed High Limit
, par. 4-13 or 4-14, expressed in percent.
Destaging Threshold must range from
η
STAGE
% =
η
LOW
η
HIGH
× 100 %
to 100%, where n
LOW
is Motor Speed Low Limit and n
HIGH
is Motor Speed High Limit.
25-44 Staging Speed [RPM]
Option: Function:
0 N/A Readout of the below calculated value for Staging Speed. When adding a fixed speed compressor,
in order to prevent an overshoot of pressure, the variable speed compressor ramps down to a lower
speed. When the variable speed compressor reaches the “Staging Speed” the fixed speed com-
pressor is staged on. Staging Speed calculation is based on
Staging Threshold
, par. 25-42, and
Motor Speed High Limit [RPM]
, par. 4-13.
Staging Speed is calculated with the following formula:
η
STAGE
= η
HIGH
η
STAGE
%
100
where n
HIGH
is Motor Speed High Limit and n
STAGE100%
is the value of Staging Threshold.
25-45 Staging Speed [Hz]
Option: Function:
0 N/A Readout of the below calculated value for Staging Speed When adding a fixed speed compressor,
in order to prevent an overshoot of pressure, the variable speed compressor ramps down to a lower
speed. When the variable speed compressor reaches the “Staging Speed” the fixed speed com-
pressor is staged on. Staging Speed calculation is based on
Staging Threshold
, par. 25-42, and
Motor Speed High Limit [Hz]
, par. 4-14.
3 Parameter Description ADAP-KOOL ® Drive Programming Guide
206
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