Disabling Functions - Gira KNX 2139 00 Product Documentation

Room temperature controller | Room temperature controller - General
Image 33: Effects of the hysteresis on the switching behaviour of a 2-point feedback

10.2.4 Disabling functions

Disable additional level
The additional stage can be separately disabled when in two-stage heating or cooling
mode. When set to "yes", the parameter "Additional level disabling object" in the
parameter node "Room temperature controller -> RTCx - General" enables the
1-bit object "Command value outputs - Additional level - Disable". In addition, the dis-
able function of the additional level can be switched off when set to "No". In case a
"1" telegram is received via the enabled disable object, the room temperature control
is completely deactivated by the additional level. The command value of the addi-
tional level is "0" while the basic level continues to operate.
Disabling operation is always inactive after a device reset (bus voltage return,
ETS programming operation).
Disable controller
Certain operation conditions may require the deactivation of the room temperature
control. For example, the controller can be switched-off during the dew point mode of
a cooling system or during maintenance work on the heating or cooling system.
When set to "yes", the parameter "Controller output disabling object" in the parameter
node "Room temperature controller -> RTCx - General" enables the
1-bit object "Command value outputs - Disable". In addition, the controller disable
function can be switched off when set to "No".
In case a "1" telegram is received via the enabled disable object, the room temperat-
ure control will be completely deactivated. In this case, all the command values are
equal to "0"/"OFF" (wait 30 s for update interval of the command values). The control-
ler, however, can be operated in this case via the communication objects.
Heating actuator 6-gang with controller | Order no. 2139 00 | 21393100
control command value
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