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

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Direct Digital Controller
Direct Digital Controller fw 4.013 – Ed. 01/2013
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been enabled. NOTE: a water T timer cycle may be disabled at any moment by pressing . The
symbol indicates that the water T timer cycle programmed has been disabled.
12. Proceed in the same way, repeating steps 9 – 10 - 11 for the programming of any further timer cycles
required.
13. Once the desired timer cycles have been programmed, it is possible to pass to the following day by
selecting the arrow at the top right . The previous day’s program may be copied for the current day by
selecting , or the water T timer cycles required for the new day may be programmed.
14. To exit, select .
If a programming anomaly occurs, appropriate alert messages are displayed:
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Water T timer cycle with zero (or “negative”) duration.
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Water T timer cycle in conflict with another timer cycle.
3.4.1.1.1.4. Partial water T timer
Partial water T timer This option may be programmed for Multi DDC
plants only , and allows the user to select up to 4 operating timer cycles
for each day of the week. This programming may be different for each of
the seven days of the week, and for the cooling and heating services.
The partial water T timers control only the machines directly managed by a specific DDC. Therefore,
according to the number of DDCs present in the plant, two situations may arise:
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The plant is controlled by a single DDC . The DDC is defined as Master DDC by default and it is
possible to use ONLY the general water T timer.
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The plant is controlled by more than one DDC (MASTER and SLAVE). In this case only one of the
DDCs installed is defined as the Master DDC. Via this DDC it is possible to program the general water T
timer to control the entire plant, and the partial water T timer to control the units that are managed
directly by the Master DDC. On the Slave DDCs it is possible to program the partial water T timer for the
purposes of controlling only the machines connected to the DDC in question. The group of machines
managed by any given DDC operates at the intersection between the general water T timer cycles and
partial water T timer cycles set on it. If, for example, a 0-10 general water T timer cycle has been set on
the Master DDC, and on a Slave DDC a 6-12 partial water T timer cycle, the units managed by the Slave
DDC may have ON status only between 6 and10.
WARNING