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ARTC-SVX001B-EN
•
No Evap Flow. System is off by absence of
Evaporator Flow. It applies if chiller is running in
Constant Flow.
•
No Cond Flow. System is off by absence of
Condenser Flow. It applies if chiller is running in
Constant Flow.
•
OFF by DI. System is off by opened state of primary
PLC DI1 if corresponding option applies.
•
OFF by Switch. System is off by software switch. It
can be turned on / off either from Home Screen
(button marked 11 on figure 1), which all users have
access to. It can also be turned on / off from BAS
(Building Automation System).
9 - System Mode
Indicates chiller thermal mode: Cooling or Heating.
10 - Module/Compressor Status
•
Modules Avail/Setup. Number of modules available
for primary/secondary temperature control and
number of modules set up for primary/secondary
temperature control.
•
Modules Online. Number of chiller modules
currently communicating with primary PLC
including primary Module.
•
Comp Run/Avail. Number of compressors currently
running and number of compressors available for
primary/secondary temperature control. Bar graph
showing this ratio available as well.
•
Comp Demand. Cooling or Heating Demand value
in number of requested compressors as well as
continuous value in %. There is also a bar graph
representation of Cooling or Heating Demand
beside the % value.
11 - Power ON/OFF
Press and hold this button to toggle the software
switch which powers the chiller (and all its modules) on
and off.
12 - Module Access
The module access buttons display the overview
screen for each module. These buttons provide access
to all chiller modules screens individually. The number
on the Mx button stands for the module number in the
chiller. Only modules that communicate directly with
the touchscreen interface are viewable via the module
access buttons.
13 - Date/Time
Current HMI date/time as set up in HMI system settings.
Modules Layout Screen
The chiller can be composed of up to a maximum of
ten modules. Pressing the LAYOUT button displays the
screen showing the status of compressors and valves
in each module. See figure below.
Each module diagram is a set of symbols and colors
that show the real-time status of the compressors, the
refrigeration circuit, the isolation valves and the
module overall. See figure below.
Figure 15.
Modules layout screen showing four
compressors on four modules
Module Layout Screen Status Conditions
Each module picture is a set of images that show real-
time color-coded state of compressor, refrigeration
circuit, isolation valves and module.
