Parameter
Units
Minimum
Maximum
Default
rpm
See Description
High Motor Speed Shutdown
rpm
100 rpm
6000 rpm
3000 rpm
Low Motor Speed Shutdown
rpm
100 rpm
3000 rpm
1800 rpm
Motor Speed Maximum
rpm
100 rpm
6000 rpm
3600 rpm
Motor Speed Minimum
rpm
100 rpm
3000 rpm
1800 rpm
Motor Speed Start
rpm
100 rpm
3000 rpm
100 rpm
1.
Proportional Term
This parameter is used to set the proportional gain for PI control of the motor speed. This value is multiplied
by the total error between the current and desired speed values. This parameter is only visible if the configu-
ration indicates that the compressor uses a variable speed motor. The value is unitless.
2.
Integral Term
This parameter is used to set the rate at which the motor PI controller will change its integral gain base on
the calculated error over time. This parameter is only visible if the configuration indicates that the compres-
sor uses a variable speed motor. The value is measured in samples per Repeat (s/R).
3.
Mode
This parameter is used to select whether the motor PI controller will vary its output automatically or if it will
be controlled manually through the
Manual Mode Position
parameter. This parameter will only be visible if
the configuration indicates that the compressor uses a variable speed motor. The options are:
•
Auto
•
Percent
•
Motor Speed
4.
Manual Mode Position
This parameter is used to set the desired output of the PI controller while it is set to operate in manual mode.
This parameter will only appear if the
Mode
parameter is not set to
Auto
. The minimum, maximum and
default values will also change based on the currently selected option in the
Mode
parameter. If
Percent
is
selected, the range will be fixed as indicated in the table above and the value will be measured in percent. If
Motor Speed
is selected, the minimum value will be equal to the value of the
Motor Speed Minimum
parame-
ter, the maximum will be set to the value of the
Motor Speed Maximum
parameter, and the value will be
measured in rpm.
5.
High Motor Speed Shutdown
This parameter is used to set the motor speed value above which a
High Motor Speed Shutdown
will be
annunciated. This parameter is only visible if the configuration indicates that the compressor is equipped
with a variable speed motor and a separate motor speed input. The value is measured in rpm.
Instruction Manual | GEA Omni™
Control panel
Control
Compressor Control Parameters
GEA Refrigeration North America, Inc. | E_806550_2 | Generated 12.01.2016
119
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