Communication Objects Fault - ABB i-bus KNX Product Manual

®
ABB i-bus KNX
Commissioning
3.3.5

Communication objects Fault

In addition to the control telegrams and status responses of the lighting groups, there is the possibility to
set the fault status for the lighting group on the KNX via a separate communication object for every lighting
group.
No.
45, 53...
156, 164
Via this communication object, a fault can be displayed in lighting group x on the KNX via this communication object in
Parameter window – Gx Status
according to its parameterization, information about a ballast fault, a lamp fault or a combination of both faults.
Telegram value
Ballast fault: The failure of ballast in the lighting group is displayed. Loss of a ballast can be due to one of the following
situations:
The ballast malfunctions and does not send telegrams on the DALI control line
The ballast has no ballast operating voltage and does not send telegrams on the DALI control line
The DALI control line to the ballast is interrupted so that the DGN/S does not receive a ballast status response
The ballast has lost its address, a query from the DGN/S remains unanswered
Note
In order to guarantee correct evaluation of a ballast fault, 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 (no. 28). Using
this function, the DGN/S independently determines which ballasts (DALI devices / DALI addresses) are connected
and uses this state as a reference value. Here not only the number but also the address of the DALI device is
registered. If the system has to be modified, the function Detect ballasts option must be activated.
The process does not need to be repeated when exchanging a DALI device with the same address. The new DALI
device receives the old DALI address and assumes the position of the DALI device it replaced.
The function Detect ballasts, can be triggered not only via the communication object Detect ballasts but also
manually by pressing the button
DALI-Software-Tool via button Detect ballasts in the Options window.
Lamp fault: A defective lamp in the lighting group is indicated. This function must be supported by the DALI devices. When
DALI devices are used, which do not monitor their lighting equipment and which thus do not provide this information on the
DALI, the DGN/S will also be unable to detect a lamp fault. In order to monitor a lamp fault, the function Detect ballasts does
not need to be explicitly activated.
Fault lamp or fault ballast: A fault in the lighting group is displayed if at least one lamp or ballast exhibits a fault. Both faults
are logically linked in the DGN/S with a logical OR.
Note
The information about an individual DALI device is provided with a fault by the DGN/S via coded diagnostics
communication objects (no. 25). Using communication object Group/device fault, the number of every faulty DALI
device is sent on the KNX and requested if required.
120 2CDC 507 114 D0201 | DGN/S 1.16.1
Function
Fault lamp or ballast
1)
Fault ballast
Fault lamp
page 60. This communication object is a variable communication object, which contains,
1 = fault of one or more DALI devices in the lighting group x
0 = no fault
for more than five seconds. Furthermore, this function can be triggered with the
Communication object name
Group x
Data type Flags
1 bit: C, R, T
DPT 1.005