Carel FLSTDMFC0A, Руководство пользователя

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FLSTDMFC0A pCO² refrigeration system
cod. Carel +030221991 rel. 1.0 dated 27/07/01
14
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The user interface for this application is divided into four fundamental parts:
•
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, not password-protected, for monitoring the controlled values, setting the main control Set point, control
differential, and displaying the active alarms and saved alarms;
•
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, password-protected, which sets all the control parameters for the various functions and processes
managed by the program: Set point limits, alarm thresholds etc.; only the parameters regarding the manufacturer password-
enabled functions are displayed and can be set;
•
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, password-protected, reserved for service operations, that is, the management of the device hour
counters, the calibration of the connected probes, and the forcing of the relay outputs;
•
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, password-protected, for configuring the system, selecting and activating the functions of
the controlled devices.
The
password-protected Manufacturer section contains a menu with four choices:
- Unit configuration
- General parameters
- Time settings
- Unit initialisation
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The display used is an LCD, with 4 rows x 20 columns.
The values and operating information are presented in the form of successive screens.
The user can move around the screens using the buttons on the terminal, described as follows:
[5RZ
+RPH5RZ
5RZ
5RZ
If the cursor is positioned in the top left corner (Home) pressing the UP/DOWN buttons accesses the successive screens in the
selected branch.
If the screen includes fields to be set, then pressing the ENTER button moves the cursor to these fields.
Inside the setting fields, the values can be modified, within the limits envisaged, by pressing the UP/DOWN buttons.
Once the value required has been set, press the ENTER button to save it
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Three LEDs are located under the rubber buttons, and indicate respectively:
ON/OFF button
green LED - indicates that the instrument is on and in operation. On the built-in terminal, the ENTER
button lights up.
ALARM button red LED - indicates the presence of an alarm situation; when flashing, the alarm condition is no longer
present.
ENTER button yellow LED - on the external terminal indicates that the instrument is correctly powered
green LED - on the built-in terminal, indicates that the instrument is on and in operation.
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Layout of the buttons on the pCO external terminal:
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