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

®
ABB i-bus KNX
Planning and Application
4.3

Monitoring of lamps and ballasts

With the DGN/S 1.16.1, the malfunction state of the lighting in the building can be broadcast on the KNX.
A control panel or control centre can evaluate or display this information. Required repair measures or cor-
responding 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 DGN/S and features a DALI interface
compliant to EN 62386 or EN 60929. Different possibilities are available for the fault messages:
A fault on the DALI output is broadcast on the KNX for a lamp and ballast fault. Two separate commu-
nication objects (Fault lamp or Fault ballast) are available for this purpose. This information indicates
that at least one DALI device on the output has a fault.
One communication object is available for an error message per lighting group. This communication
object can contain the information about a lamp fault (Fault lamp), ballast fault (Fault ballast) or a logi-
cal OR combination of lamp and ballast fault (Fault ballast or lamp).
The fault status of the individual DALI device can be read via
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 Fault group/device on the KNX. If several
faults exist, the number of the next/previous device or the next/previous lighting group can be dis-
played via the communication object Switch up next fault alarm. The numbers of devices or lighting
groups with a fault are sent via the communication object Number of faults on the KNX.
In order to guarantee correct operation, the DGN/S has to know how many ballasts are to be monitored.
This is implemented by one-time activation of the communication object Detect ballasts. With this function,
the DGN/S establishes automatically how many ballasts are connected. The DGN/S saves this number as
a reference value. If this system has to be extended or reduced, the function Detect ballasts should be re-
activated. This process is only necessary if the number of ballasts per output has changed and not when
replacing a ballast. Manual detection of the ballasts is also possible by pressing the button
DGN/S for longer than five seconds. It is also possible to trigger detection of the ballasts in the DALI-
Software-Tool.
Note
In order to detect a lamp malfunction, the fault must be sent by the DALI device on the DALI control line.
This is generally supported by the DALI ballasts. DALI dimmers and DALI switch actuators often do not
have this characteristic. The function can be found in the technical data of the DALI device or by con-
sulting the manufacturer of the lamps.
a coded communication object (Fault group/device). 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 of the
objects on page 98.
the communication object Diagnostics is read and provided on the KNX. The function can be
taken from the descriptions of the communication objects on page 98.
DGN/S 1.16.1 | 2CDC 507 114 D0201 131
communication
on the