Direct Digital Controller
10 Direct Digital Controller fw 4.013 – Ed. 01/2013
If the set point is configured on inlet water, the inlet water set point is displayed below it (In).
In the event of errors occurring in the units of the plant(s), the following signals are given:
The
symbol flashes;
The display illumination flashes;
The device (if ON) emits an intermittent beep (see Paragraph 3.4.2.4 - “Alarm Beeper” on page 49).
1 – The DDC’s display reverts to the main screen after 30 minutes of inactivity (no operation of encoder).
2 – The backlighting of the display is switched off after 15 minutes of inactivity (see also Paragraph 3.4.2.5
- "Display Options", on page 50).
3 – If the encoder is turned or pressed while the display’s backlight is flashing, it stops flashing, and starts
flashing again after 25 seconds of inactivity, if the error conditions persist.
In all other screens the display’s illumination flashes.
2.3 USING THE ENCODER
The main user interface for management, programming and control of the DDC is the knob located on the
front of the Direct Digital Controller (the encoder).
The operations that may be performed with the encoder can be summarised as follows:
1 - Rotate the encoder in a clockwise or anticlockwise direction to position the cursor on the icons to be
selected on the display or to modify the value of a numerical field.
2 - Press the encoder to access the menu selected or to confirm the operation being carried out.
Each time instructions in this manual indicate that an icon, parameter etc. should be selected, it is necessary
to carry out the two operations described above.
NOTE
WARNING
ROTATING THE ENCODER
PRESSING THE ENCODER
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