Robur Direct Digital Controller, Инструкция по установке, использованию и программированию

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Direct Digital Controller
136
Direct Digital Controller fw 4.013 – Ed. 01/2013
The temperature sensor must be connected to the terminals provided for this purpose on the rear of the Direct
Digital Controller (see detail E in Figure 13 on page 54).
In AmbT operating mode with two-line hot/cold plants, the icon in the “ Plant control ” menu allows
COOLING or HEATING mode to be selected respectively.
In cooling mode (see Figure 29), the plant is on until the ambient temperature value set (T) is reached; when
the ambient temperature value set (T) is reached, the plant switches off and switches on again if,
subsequently, the ambient temperature value set + the differential value set (T + Diff) is reached.
In heating mode (see Figure 30), the units start until the temperature value set (T) is reached; when the
ambient temperature value set (T) is reached, the plant switches off and switches on again if, subsequently,
the ambient temperature value set – the differential value set (T – Diff) is reached.
For operation with an ambient temperature sensor, it is necessary to programme the ambient
chronothermostat (see Paragraph 3.4.1.2.3 - “Chronothermostat” on page 43).
Figure
28
–
EXAMPLE OF AMBIENT TEMPERATURE SENSOR CONNECTION FOR AmbT MODE
Figure
29
-
OPERATING PRINCIPLE IN AmbT/ExtT MODE
(COOLING)
Figure
30
-
OPERATING PRINCIPLE IN AmbT/ExtT MODE
(HEATING)
SET
+ Diff.
ON
OFF
T
T + Diff.
SET
- Diff.
ON
OFF
T
T - Diff.
NOTE
1 2 3 4 5 6
ddc
INTERNAL AMBIENT
TEMPERATURE SENSOR
T