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Table 9. The input/output screens (continued)
Primary I/O Expansion #2 Screen
When an I/O screen is displayed, switching to other I/O
screens is accomplished by pressing their respective
buttons:
•
The ANALOG button displays the analog screen.
•
The DIGITAL button displays the digital screen.
•
The EXP I/O button displays the expansion IO
screen.
Analog Inputs
AI1 – AI3, AI6 – AI8
These inputs indicate the inlet or outlet temperatures
for each of the three heat exchangers: evaporator,
condenser, or source.
ARTC-SVX005B-EN
Primary I/O Expansion #1 Screen
AI4
This input indicates suction pressure.
AI5
This input indicates discharge pressure.
AI9
This input indicates the panel temperature (optional). It
is used when the temperature control inside the control
panel requires either heating (for a cold environment)
or cooling (for a hot environment).
Analog Outputs
Analog output (AO) data includes these parameters:
AO1, AO2, AO3
These outputs indicate the evaporator, condenser, or
source isolation valve position as a percentage of
opened condition.
AO5
This indicates compressor speed (optional). It is used in
case of VSD-controlled compressors.
O O p p e e r r a a t t i i n n g g P P r r o o c c e e d d u u r r e e s s
Secondary I/O Expansion #2 Screen
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