Monitoring Of Lamps And Ballasts - ABB i-bus KNX Product Manual

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ABB i-bus KNX
Planning and application
4.3

Monitoring of lamps and ballasts

With the DLR/A, the malfunction state of the lighting in the building can be broadcast on the KNX. A control
panel or control center can evaluate or display this information. Required repair measures or
corresponding maintenance cycles can be initiated. It is thus possible to integrate the lighting in a higher-
order Facility Management system.
The prerequisite is that the lighting equipment is connected to the DLR/A and features a DALI interface
compliant to EN 62386 or EN 60929. Different possibilities are available for the fault messages:
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One communication object (No. 35, 47 etc.) per lighting group is available for an error message. This
communication object can contain the information about a lamp fault (Fault lamp), ballast fault (Fault
ballast) or a logical OR combination of lamp and ballast fault (Fault ballast or lamp).
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The fault status of the individual DALI device can be read via:
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The number of the DALI device with a fault or a lighting group with a fault (can be parameterized) can
be sent as a figure value with the communication object No. Group/device fault (No. 21) on the KNX. If
several faults exist, the number of the next/previous DALI device or the next/previous lighting group
can be displayed via the communication object Switch up next fault alarm (No. 22). The numbers of
devices or lighting groups with a fault are sent via the communication object Number of faults (No. 20)
on the KNX.
In order to guarantee correct operation, the DLR/A has to know how many ballasts are to be monitored.
This is implemented by one-time activation of the communication object Detect ballasts (No. 25). With this
function, the DLR/A establishes automatically how many DALI devices are connected and the addresses
to which they are connected. The DLR/A saves this information as a reference value. If this system has to
be extended or reduced, the function Detect ballasts should be undertaken again. This process is only
necessary if the number of ballasts per output has changed or when the DALI address assignment has
changed. Should a ballast be exchanged by a device that has the same DALI address, it is not necessary
to undertake Detect ballasts again. Detection of a ballast can also be performed manually be pressing the
S button in manual mode. In the Software Tool it is also possible to trigger detection of the ballasts.
158 2CDC507128D0202 | DLR/A 4.8.1.1
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a coded communication object (Fault group/device code No. 19). This 1 byte communication
object contains the devices or lighting group number (this can be parameterized) and the fault
information (Fault ballast or lamp). The function can be taken from the descriptions in chapter
Communication objects, from page 117.
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The communication object Diagnosis (No. 6) is read and provided on the KNX. The function
can be taken from the descriptions in chapter Communication objects, from page 117.