2.
Motorized Liquid Injection Valve Temperature Set Point
This parameter is used to set the desired temperature value of the selected control signal that the modulat-
ing valve will attempt to maintain for oil cooling control. This parameter will only be visible if oil cooling type is
set to
IntelliSOC™
in the configuration. The value is measured in the panel temperature units as selected on
the
Panel Settings
screen.
3.
Minimum Valve Position
This parameter is used to set the minimum value that the motorized liquid injection valve may be set to when
the compressor is not running. This parameter will only be visible if oil cooling type is set to
IntelliSOC™
in
the configuration. The value is measured in percent.
4.
Proportional Term
This parameter is used to set the proportional gain for PI control of the valve position. This value is multiplied
by the total error between the current and desired speed values. This parameter will only be visible if oil cool-
ing type is set to
IntelliSOC™
in the configuration. The value is unitless.
5.
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 will only be visible if oil cooling type is set to
IntelliSOC
™ in
the configuration. The value is measured in samples per Repeat (s/R).
6.
Mode
This parameter is used to select whether the PI controller will vary its output automatically or if it will be con-
trolled manually through the
Manual Mode Position
parameter. This parameter will only be visible if oil cool-
ing type is set to
IntelliSOC™
in the configuration. The options are:
•
Auto
•
Manual
7.
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 be visible if oil cooling type is set to
IntelliSOC™
in the configuration. The value is
measured in percent.
8.
Calibrate Time Before Bleed
This parameter is used to set the period of time the motorized valve will remain fully unloaded at its 4 mA
position after the compressor is stopped. This parameter will only be visible if oil cooling type is set to
Intelli-
SOC™
in the configuration. The value is measured in seconds.
9.
Liquid Injection Begin
This parameter is used to select the temperature of the selected control signal at which the liquid cooling
process will begin. This parameter will only be visible if the oil cooling mode is not set to
IntelliSOC™
. The
value is measured in the panel temperature units as selected on the
Panel Settings
screen.
10.
Liquid Injection End
This parameter is used to select the temperature of the selected control signal below which the liquid cooling
process will end. The value is measured in the panel temperature units as selected on the
Panel Settings
screen.
11.
Liquid Injection Pulse Period
This parameter is used to select the pulse period of the Liquid Injection Solenoid. The parameter will only be
visible if the oil cooling type is set to
Yosaku Pulsed Liquid Injection
in the configuration. The value is meas-
ured in seconds.
Control
Compressor Control Parameters
Instruction Manual | GEA Omni™
Control panel
144
GEA Refrigeration North America, Inc. | E_806550_2 | Generated 12.01.2016
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