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Valve outputs | Channel-independent functions
Object no.
6
1-bit output object for direct activation of a circulation pump of the heating or cooling
system. The pump is only switched on by the actuator when at least one command
value of the assigned outputs exceeds a limiting value with hysteresis defined in the
ETS. The pump is switched off when the limiting value is reached or undershot
again. In addition, the actuator can optionally evaluate an external telegram (object
7).
The telegram polarity can be configured. After bus voltage return and an ETS pro-
gramming operation, the actuator always first transmits the status "Pump OFF"
without a delay. The actuator then updates the status to "Pump ON", providing that
the condition for this has been fulfilled and an optionally configured "Pump delay
ACTIVE" has elapsed.
Function: Pump control
Object no.
7
1-bit input object for the cascading of multiple actuators with pump control. The
transmitting operation for the pump control of another heating actuator can be con-
nected to this object. The local heating actuator links the external telegram with the
internal status of the pump logically as OR and outputs the result of this link via the
object 6.
In this case, the telegram polarity is fixed: "0" = Pump OFF, "1" = Pump ON.
Cyclical telegrams to this object with an identical telegram polarity (ON -> ON, OFF -
> OFF) produce no reaction. After a device reset, there is no polling of the current
status of this object. Only when a bus telegram is received does the actuator take
this status into account when activating the pump.
9.3.3 Largest command value
Largest command value
Through evaluation and determination of the largest command value in the heating or
cooling system, the actuator allows influencing of the energy consumption of a hous-
ing or commercial building. The information on the largest active 1-byte command
value can be made available to suitable calorific furnaces with integrated KNX con-
troller directly via a KNX telegram, for example, to determine the optimum flow tem-
perature. If the function is enabled, the heating actuator evaluates all the active 1-
byte command values of the valve outputs and transmits the externally received
largest command value if there is a change by the interval preset in the ETS or cyc-
lically via the object "Largest command value - Status".
Heating actuator 6-gang with controller | Order no. 2139 00 | 21393100
Function
Pump control -
Switch
Function
Pump control - Ex-
ternal
Name
General valve out-
puts - Output
Name
General valve out-
puts - Input
Type
DPT
Flag
1-bit
1,001
C, R, -, T, -
Type
DPT
Flag
1-bit
1,001
C, (R), W, -,
-
Page 50 of 257
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