Disable Functions Of The Room Temperature Controller - Gira 5142 00 Product Documentation

4.2.4.2.8 Disable functions of the room temperature controller

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. The "Via object" setting in the
"Switch off controller (dew point operation)" parameter in the "Room temperature control ->
Controller functionality" parameter node enables the 1-bit "Disable controller" object. 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 temperature control
will be completely deactivated. In this case the command values of both control circuits are the
same "0" (wait for 30 sec command value update interval) and the "Dew point operation" 6 icon
lights up on the device display. The controller, however, can be operated in this case.
The additional stage can be separately disabled when in two-stage heating or cooling mode.
When set to "Yes", the "Additional level disabling object" parameter in the "Room temperature
control -> Controller general" parameter node will enable the
1 bit "Disable additional level" object. In addition, the disable 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 additional level is "0" while the basic level continues to operate.
In case both control circuits are used, the second control circuit can be separately disabled. In
case a "1" telegram is received via the disable object "Disable 2nd control circuit", the room
temperature control of the second control circuit will be deactivated and the command value of
this circuit will be "0". In this case the first control circuit will continue to run.
i A disable is always deleted after a reset (return of bus voltage, ETS programming
operation).
Disable controller operation
It is possible to disable the operation of the room temperature controller. If operation is disabled,
the controller can no longer be operated using function buttons of the device, display buttons or
the "Settings" menu. Operation via the bus, e.g. using the operating mode or setpoint objects, is
still possible, however.
An active disable of the operation will be indicated by the " x " icon on the display.
The "operation of controller inhibitable" parameter in the "Room temperature control ->
Controller functionality" parameter branch can be used to determine whether the local operation
is never possible (setting: "always disabled" or whether it can be initiated via the "controller
operation disable" object (setting: "via bus"). With the setting "via bus" the operation will be
deactivated if a "1" telegram is received on the object. Hence, the operation will be activated
again after receiving a "0" telegram. Pressing a button assigned as a controller operation or
display key ("Setpoint" menu) will show no response during an active disable.
i If the controller operation is disabled, it will not influence room temperature control itself, i.e.
the control algorithm is running and creating actuating variables and status reports.
i A disable of the controller operation is always deleted after a reset.
Order No. 5142 00
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Software "Push button sensor 3 plus"
Functional description
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