Emerson Vilter Vission 20/20, Operation And Service Manual

Page: 163 / 338

19 – 5
Section 19 • Configuration
Vission 20/20 • Operation and Service Manual • Emerson • 35391SC 2.7
Compressor Sequencing
The compressor sequencing feature of the Vission 20/20
allows the operator to setup as many as five compressors
to automatically start, stop and maintain system loads.
The compressor designated as the master will monitor
system parameters and make decisions on how many
compressors are required to meet the load as efficiently
as possible.
Compressor Sequencing:
• Enables the compressor sequencing algorithms and
allows access to the compressor sequencing screen.
Master:
•
Identifies the panel as the master while in sequencing
control.
Slave:
•
Identifies the panel as a slave while in sequencing
control.
Compressor Name:
•
Unique identifier that is broadcasted to all other
Vission 20/20 units in the sequencing network.
Language
Allows the operator to select the language to be dis-
played on screen.
Model & Refrigerant
The values in this section provide the Vission 20/20 al-
gorithm critical information on how to efficiently and
safely control the compressor, see Figures 19-2 and 19-3
& 19-4.
Figure 19-2. Configuration Screen - Compressor Control (Page 2)
(Compressor Type – VSS)