Technical data

64
Connect the DDC to the transformer via the 4-pole connector provide for this, following
the diagram in Figure 6.17 CCI/DDC - electric supply → 64. Pass the cable through the
opening in the cover before fixing the wires to the connector.
To power up the DDC, proceed as follows.
You will need: the appliance disconnected from the electricity supply
Remove the DDC's back panel by undoing the 4 bolts securing it.1.
Cut a suitable length of power cord (minimum 2x0.75 mm2.
2
).
Pass the power cord (DDC side) through the hole in the DDC's cover and hook up 3.
as shown in the example, with the following polarities: terminal 1 = 24 V; terminal
2 = 0 V; terminal 3 = ground.
Make the grounding connection on the transformer terminal connected to termi-
nal 2 of the 4-pole connector (EP) of the DDC. Terminal 2 is connected internally to
terminal 3, and is thus grounded; if the transformer already has one wire grounded,
it must be connected to this terminal. Terminal 3 of the DDC’s 4 pole connector
must always be grounded (r ≤ 0.1Ω).
On completion, close the DDC's back panel with the 4 bolts.4.
The DDC is equipped with a backup battery which retains the memory settings in case
of power failure. The backup battery lasts approximately 7 years, after which time it
must be replaced by an authorised Robur Technical Assistance Centre.
Figure 6.17 – CCI/DDC - electric supply
CCI/DDC electric supply from external transformer.
LEGEND
DDC CCI/DDC
AL supply 4 poles connector
1 clamp and wire for 24 Vac supply
2 clamp and wire for 0 Vac supply
3 clamp and wire for ground contact
(required connection)
DDCTR safety transformer
- (230/24 Vac 50/60 Hz)
The following wiring diagrams show the connection of the DDC to 1 appliance (Figure
6.18 Connexion câble CAN BUS for plants with one unit → 65) and 2 appliances (Figure
6.19 Connexion câble CAN BUS for plants with more unit → 66) respectively.