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Section 4 • Operation
HPLD Control with Vission20/20™
Micro-controller
The Vission20/20™ panel can control an HPLD compres-
sor as long as Analog Output Board #10 is present and
selected in the Configuration screen.
The user must select either VSG/VSH or VSS from the
Compressor combo box in page 2 of the Configuration
Menu, and then the Model from the next box, see Figure
4-1.
FIgure 4-1. Compressor and Model Setup with Vission 20/20
4 – 2
HPLD Single Screw Compressor • Installation, Operation and Service Manual • Emerson • 35391HP
The choice of an HPLD compressor will cause the refriger-
ant combo box to be grayed out.
Once the compressor has been selected, the Vis-
sion20/20™ panel touchscreen will show an indicator
of VFD speed percentage, and buttons to increase and
decrease it.
For more information on VFD capacity control, please
check the Vission20/20™ manual (35391SC).
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