Unit installation

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• The compressor is halted
• Automatic reset.
Fan Protection Alarm
If the FP digital input is active:
• Message: ” ALARM COMPRESSOR N.X FAN PROTECTION”;
• The compressor is not halted (it is a warning, not alarm)
• Automatic reset.
SYSTEM SETUP
Set Point Change
The <SET> key allow the user to modify (knowing the user password M2), through the <UP> <DOWN> keys the
control temperature set point (Set_T). The new value will be accepted upon pressing again the <SET> button.
The set point modifies procedure is as follow:
• Press <SET>, the LCD will ask the password input
• Using the <UP> <DOWN> keys input the right password (it is possible to change the value through the M2
parameter of the installer setup)
• Press <SET>, the ‘MODIFY’ word will appear allowing the parameter to be changed; the LCD will show the
set point actual value
• Using the <UP> <DOWN> keys modify the set point value
• Press <SET> to store it or <ESC> to exit without memorising
Cod. Description LCD Display Description min max default m.u.
S1
Set point for Temperature Control SET POINT FOR
TEMPERATURE
CONTROL
32 90 40 °F
S2
Second set point for Temperature Control SET POINT II FOR
TEMPERATURE
CONTROL
32 90 0 °F
S3
Capacity demand limit of unit power
(100 = no upper limit)
UPPER DEMAND LIMIT
(100=DISABLED)
1 100 100 %
S4
Language (0=English, 1=Deutsch,
2=Italian)
LANGUAGE
0=EN 1=DE 2=IT
0 2 0
REMOTE MONITORING SYSTEM
The Mother board can be equipped with an additional serial interface board and a special firmware release which
allows to connect it, via an appropriate Gateway (supplied by us), to a local supervising PC or, through a Modem,
to a remote PC.
The information’s exchanged are:
• Status of the Controller (every digital outputs of each compressor)
• Alarm eventually occurred with description
• User SETUP (remotely modifiable) dump
• Real time temperatures and pressures values
• Real time analog outputs values
• Suction temperature, Superheat and integral part of EEV control values
• Digital input and output configuration
• Start, Stop, Load Setup and Alarm Reset command
From the PC side appropriate software allow to easily view in tabular or graphic format these data as well as to
interact with the board’s setup.
The possibility to remotely connect via modem the System to a centralized maintenance center helps to ensure a
prompt and money/time saving reply to the most common operating failures, avoiding in most of the cases the
on-site intervention.