Direct Digital Controller
4
Direct Digital Controller fw 4.013 – Ed. 01/2013
The Direct Digital Controller can manage modules of the ACF60 and AY00-119 type equipped with S61 and
S70 electronic boards respectively.
- GAHP-A
= 1 “hot” module
- GAHP-AR
= 2 modules (1 “cold” + 1 “hot”)
- GAHP-GS/WS
= 2 modules (1 “cold” + 1 “hot”)
- GA HR
= 1 "cold" module (the "hot" module of the recuperator is not managed by the control
system)
- ACF 60-00
= 1 "cold" module
- AYF 60-119/2
= 2 modules (1 “cold” + 1 “hot”)
- AYF 60-119/4
= 2 modules (1 “cold” + 1 “hot”)
- AY 00-120
= 1 "hot" module
Domestic hot water (DHW) production plant control
The DDC is also capable of controlling a plant including the production of hot domestic water, by installing one
or more optional RB100 or RB200 devices (Robur Box).
Definitions
Generator:
general term indicating machines for the production of hot and/or chilled water. In the text they are
also referred to as machines or units.
Robur generator:
generator (heat pump, boiler or refrigerator) produced by Robur. All types of Robur
generator can be directly managed from the Robur Direct Digital Controller (DDC) using the CANBus
communication bus.
Third party generator:
generator (usually a boiler or refrigerator) not produced by Robur, which cannot be
directly managed from the DDC via the CANBus and thus requires an additional interface device (Robur Box
RB200).
Network ID:
unique identification number identifying a Robur generator on the CANBus BUS, a Direct Digital
Controller (DDC), the valve service of an RB100 device, or each of the services provided by an RB200. It acts
as an address for the data communication network; it must be set to a different value for each generator, DDC
or RB100/RB200 device present. For RB200 devices a base network ID is set, then the system automatically
assigns from this a network ID for each configured service.
In the documentation it is also referred to as a CAN ID or, when referred to Robur generators, unit ID or
machine ID.
Base plant part:
this term refers to the portion of the plant including all generators, excluding those which can
be hydraulically separated via a specific three-way valve.
Separable plant part:
this term refers to the part of the plant which can be hydraulically separately from the
base plant part and run independently to provide a type of service for Domestic Hot Water (DHW).
This part of the system can be in two distinct states, on the basis of the position of the hydraulic separation
motorised valve:
•
Separate:
in this status, the generators from the separable part of the plant are managed together with
those of the base plant, in order to satisfy the request for the separable DHW service.
•
Included:
in this state the generators from the separable part of the plant are managed together with those
of the base part, to satisfy heating and/or base DHW services; in particular the generators are made
available if at least the heating request is active; in the presence of only the base DHW request, the
generators on the separable part of the plant are not used.
Separate plant part:
variant of the separable part of the plant, which has no three-way separation valve; it is
therefore permanently sectioned off from the base plant part.
Base DHW service:
domestic hot water service obtained with the base plant part.
Separable/separate DHW service:
domestic hot water service obtained with the separable/separate plant
part.
Base group
: set of generators on the base plant part.
NOTE
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