ABB i-bus KNX Product Manual page 104

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ABB i-bus KNX
Commissioning
No.
17...26
These communication objects are enabled, provided that in parameter window Function, page 35, the parameter Device is
load control master has been selected with the option yes and in the parameter window
parameter Source for power value 1...4 (communication objects no. 17...20) has been selected with the option external via
object as well as the parameter Number of additional power values [1...6] (communication objects no. 21...27) has been
selected with a number > 0.
The external power values are received via these communication objects (up to 10). Power values 1...4 can also be alterna-
tively linked internally with power values output 1...3 or the total power of the device.
27
This communication object is enabled, provided that in parameter window Function, page 35, the parameter Device is load
control master has been selected with the option yes.
The value of the communication object is internally calculated from the sum or the received power values and the internally
linked power values.
28
This communication object is enabled, provided that in parameter window Function, page 35, the parameter Device is load
control master has been selected with the option yes.
The master sends the shedding stage on the bus as soon as the Sum power values (communication object no. 27) has
exceeded the parameterized load limit.
Format:
8 bit
D (bit 7):
P (bit 6...4) [000b...111b]: If more than one master is available in the system, these bits can determine the priorities of the
S (bit 3...0) [0000b-1111b]: This is the actual shedding stage.
Telegram value:
Shedding stages 9 to 16 are not used with the Energy Actuator.
If the load limit is exceeded, load shedding stage 1 is sent. All slaves with load shedding stage 1 then switch off. The Sum
power values is then recalculated and compared with the load limit. If this is still exceeded, load shedding stage n + 1 is sent
until the load limit is below the limit (before every increase in the shedding stage, the parameterized Reaction time when
exceeding load limit is completed beforehand).
Should the value be below the load limit minus the hysteresis again, the shedding stage is reduced in steps (taking the
Reaction time when falling below load limit into consideration).
102 2CDC 505 084 D0203 | SE/S 3.16.1
Function
Receive power value 1...10
Send sum power values
Send load shedding stage
DPPPSSSS
1 = load control is not active, received shedding stages are not evaluated and slaves are enabled.
0 = load control is active, received shedding stages are evaluated.
masters among themselves. The Energy Actuator always sends P = 0.
S = 0000b: Shedding stage 0, the slaves are enabled
S = 0001b: Shedding stage 1
...
S = 1000b: Shedding stage 8
Object name
Load control master
Load control master
Load control master
Data type Flags
4 byte C, R, T, U
DPT 14.056
Load control master, page 46, the
4 byte C, R, T
DPT 14.056
1 byte C, R, T
DPT 236.001