Table of Contents
Advertisement
Table 10. HMI settings menu screens (continued)
Screen
User Interface
Companion IO
Configuration
Admin
Parameters
(Admin
Credentials)
Special Functions
The following table lists the special functions of this control
system:
Table 11. Chiller control system special functions list
Function
Brief
Hand/Off/Auto
Allows user to manually
enable the chiller to operate
based on its own signals
Chiller Setpoint (User)
Allows user to view the
chillers setpoint.
Chiller Setpoint (advanced)
Allows user to change the
setpoint functions
EXV Control
Monitor and Control EXVs
functions
Condenser Control
Monitor and Control fan
banks and condenser
bypass valve functions
Tonnage and Power (View)
See pop-up display of data
Tonnage and Power
Adjust settings
(Control)
Metric/Imperial
Set system to display either
metric or imperial units
BMS Monitor and Control
Provides interface between
chiller and BAS
Compressors Staging Valve
Monitor and Control
Control
compressor staging valves
ARTC-SVX013A-EN
Function
•
Allows use of T3C Output terminals, both
analog and digital for Companion
functions.
•
Touch each output configuration box to
scroll through available functions.
•
Since this page is accessed through the
HMI configuration page which has admin
access only, this page is also admin
access only.
•
Controller Software Revision
•
Project information
•
Master Switch control
•
Power Metering reset
•
Re-initialize compressor communication
•
HMI reset
Hand/Off/Auto
The Hand/Off/Auto control consists of 2 components:
•
Display and Access button (invokes control screen)
Access
Level
•
Control screen
User
User
Admin
Tech
Tech
The Hand/Off/Auto function has 3 modes:
User
•
Off – no function. Compressors are off and remain so
Admin
regardless of loop temperatures. All display functions
work as normal. Chiller Enable is White and OFF.
Admin
•
Hand – the chiller controls the compressors based on
(by default) achieving setpoint on leaving chilled water
Admin
temperature. Chiller Enable displays Red and Hand.
•
Auto – this mode requires an external (hardwired)
Tech
signal providing Chiller Enable; otherwise, Chiller is Off.
Once Chiller Enable signal is provided, chiller controls
compressors according to setpoint. Chiller Enable
displays White and Auto.
Operating Procedures
Access
Main Menu > Settings Menu >
HMI > Companion > T3C IO
Main Menu > Settings Menu >
HMI > Admin Parameters
Admin access only.
35
Advertisement
Table of Contents
