Table of Contents
Advertisement
Operating Procedures
opened - pressure is exceeding normal range threshold
(faulty state).
Digital Outputs
There is an LED for each digital output which shows its
current state.
Digital LEDs
There is an LED for each digital input that indicates its
current state. For all inputs, the color of the LED signifies
its current state:
Green LED.
This digital output is energized, the
connected device is powered up or running.
Gray LED.
This digital output is de-energized, the
connected device is not powered up or not running.
DO1, DO2 Comp On/Off
This digital output turns a compressor on and off.
DO3 Liq Line Solenoid
This digital output energizes and de-energizes the liquid
line solenoid valve.
DO4 Free Cooling Valve
This digital output energizes / deenergizes Free Cooling
diverting valve. When Free Cooling is active, this valve is
utilized to direct Evaporator Flow via Free Cooling
Condenser coils that maintain System Chilled Water
Temperature in Free Cooling Mode.
DO6-DO8 Fans 1, 2, 3
This digital output is used to turn fans of Fan Bank 1 on and
off.
DO10 General Alarm
This digital output energizes when any of the following
alarms occur:
• An alarm that shuts down and locks out compressor
1 or 2.
• An alarm that shuts down and locks out the entire
module.
DO11 Panel Heater / Fan (optional)
This is the digital output is used when temperature control
inside control panel is required (identical to AI11).
Expansion IO Screen
This screen is only applicable to the client module. This
screen controls analog inputs and digital requests.
36
AI1
These show the Suction Pressure of Circuit 2.
AI2
These show the Discharge Pressure of Circuit 2.
DI3, DI4
These show the Discharge / Suction Pressure switches of
Circuit 2. DI closed - pressure is in the normal range; DI
opened - pressure is exceeding normal range threshold
(faulty state).
DI5
This is the feedback for Pump-down pressure switch of
Circuit 2. DI closed - pressure is in the normal range; DI
opened - pressure is exceeding normal range threshold
(faulty state).
DO1, DO2, DO6
This digital output is used to turn fans of Fan Bank 2 on and
off.
Trend Screen
When on the client module screen, pressing the trend
button displays the trend screen. There are two trend
screens: cooling trend screen and heating trend screen.
Module Trend Screen displays three trends: Controlled
inlet / outlet water temperatures and Module Demand in
%.
Trends can be viewed in real time as well as for the last
seven days. Each variable is trended every three seconds.
Trending data is stored on HMI internal memory.
Apart from displaying trends, Module Trend Screen has
controls for viewing, scrolling, zooming, deleting trends
etc.
ARTC-SVX002A-EN
Hide quick links:
Advertisement
Table of Contents
