2.
MC Family
The Vi control of MC Family compressors is accomplished using a series of two parallel slides that are oper-
ated simultaneously maintain the desired Vi and capacity of the compressor. Each slide operates independ-
ently and has its own position indicator and proportional controller mechanism.
The capacity slide is used to adjust the capacity of the compressor to maintain the desired control value set
point and is completely independent of the Vi slide.
The Vi Slide is used to maintain the optimum Vi for the current operating conditions. The optimum position of
the Vi Slide is a calculated value that is a function of the current optimum Vi setting and the current primary
slide valve reading. The physical position of the Vi slide is displayed as
Volume Slide Position
, which
appears on the
Operating Data
table as a percent. The GEA Omni™ is programmed to proportionally load or
unload the Volume slide as needed until its percentage falls within a range of the calculated optimum Vi per-
centage defined by the
Vi Deadband
parameter, at which point the compresor is considered to be operating
at the optimum Vi Setting.
Instruction Manual | GEA Omni™
Control panel
Control
Variable Vi
GEA Refrigeration North America, Inc. | E_806550_2 | Generated 12.01.2016
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Содержание Omni
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