HARDWARE DESCRIPTION
The basic system comprises :
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Control (Display) board
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INPUT/OUTPUT board
WARNING :
HP, LP, Antifreeze faults are by default in manual reset mode. They remain in manual
reset mode until the user resets to normal conditions by pressing the CLEAR button.
These can be changed to auto reset by changing P4 parameter.
CONTROL ACTIONS
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Regulation of Chiller temperature based on the control sensor location.
Control Board :
LIQUID CRYSTAL DISPLAY (LCD)
The Liquid Crystal Display shows the values of the controlled parameters, the selected
set-point, the alarm thresholds and all other information concerning the controlled
variables.
DISPLAY types :
2 rows X 16 characters LCD
LIGHT EMITTING DIODES (LED)
LEDs INDICATING THE STATUS OF THE DEVICES
There are different LED indications on the control board front panel. They give the
following information :
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Red blinking LED “ALERT” : Indicates that there is a fault
-
Red LED devices : Indicates that there is a fault in that particular device
-
Green LED devices : Indicates that the device is OK
-
Blank (inactive) LED indicates that the device is inactive.
