Connecting Serial Control Cables
DBC1220GL Installation Manual Rev I.docx
5
Supply Cables
The supply input terminals are located toward
the centre of the enclosure and consist of Earth,
Neutral and 3 Phases, which will accept up to
35mm
2
cables. The supply cables should have
a capacity of 63A per phase, to allow the device
to be loaded to its maximum capacity.
Load Cables
Load cables can be terminated on the 2-way
Load terminal blocks (two for each channel), a
Neutral link and an Earth link located at the
centre of the enclosure. These connectors will
accept up to 10mm
2
cables.
It is important that
an individual output circuit is not overloaded
.
Calculate the intended load, and ensure that it is
below the maximum capacity of an individual
channel, which is 20A. To ensure compliance
with interference standards, the load neutral
cables must be individually connected to the
neutral link terminals inside the cabinet.
Never
use a common neutral at a remote location
.
Load Control Cables
Load Control cables can be terminated on the 2
x 12 way terminal strips located directly above
the Load terminals. The left terminal block is the
output for 0 to +10V, DSI or DALI if selected by
software setup. Note that most types of 1-10V
HF fluorescent ballast control wiring is polarity
conscious. The + terminal of the ballast
connects to the left terminal block, and the --
terminal connects to the right (common) terminal
block. DSI ballasts are not polarity conscious.
Emergency Lighting Connections
Connect Emergency Lighting circuit active to the
load side on the circuit breaker for the relevant
channel, as indicated by the labels next to the
circuit breakers. Do not remove any cables that
may already be terminated at this location.
Energising the Device
If it is necessary to energise load circuits before
any control cables are connected, it is
acceptable to replace the cover and energise
the device immediately, as the default factory
programming is to have all channels set to 100%
output. If there is no output on any or all
channels, see the troubleshooting section (page
10). This device should be de-energised before
terminating the control and data cables.
