Art. No. ..5192KRMTSD
Art. No. ..5194KRMTSD
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In automatic mode, the fan level objects are updated according to the internal command
value calculation (cyclically every 30 seconds) plus the waiting time configured for level
change-over. Telegram transmission only takes place when the object values of the fan
levels are changed. After a device reset, the fan level objects are updated and the status
transmitted to the bus.
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If a switch-on level is configured in the ETS ("Start-up via level" parameter), then, before
the automatic activation of a fan level, it is possible to switch to a level, specified in the ETS
and usually higher, for a brief time according to the command value (see section "Switch-
on level").
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The command value evaluated by the fan controller in Automatic mode can be optionally
limited by in the top and bottom command value ranges by the parameters "Command
value is 0% until internal command value is greater than" and "Command value is 100% as
soon as internal command value is greater than". In addition, the command value can also
be raised by a constant value by the "Command value offset" parameter .
Manual operation:
With the local control of a button configured to "Function = Fan control" and
"Button function = Manual control" on the device, the controller makes a distinction as to
whether it was in automatic or manual mode at the time the button was pressed.
If the controller is in automatic mode, then pressing a button switches to manual mode. The
parameter "Fan level on change-over to manual" then decides whether the fan level most
recently set in automatic mode is maintained, the fan is switched off or a defined fan level is set
(see also next section "Switch-on level").
If, at the time the button is pressed, the manual controller is already active, then the controller
switches to the next highest fan level without a delay. If the fan is in the highest level, then
pressing a button switches it back to the OFF level. From there, every additional press causes
the fan level to be raised. The switch-on level is ignored.
If the fan is switched off manually from the highest level, then it runs on for the time configured
as "Fan run-on time, heating" or "Fan run-on time, cooling", providing that these run-on times
are configured in the ETS. If, during the run-on time, the manual control button is pressed again,
the controller will terminate the run-on time. The fan switches off briefly and then switches
immediately to level 1.
In fan control in the menu level, the fan level and automatic mode can be set directly without
taking into account the parameter "Fan level on change-over to manual", the switch-on level or
fan run-on times (see chapter 2.5.2. Menu level).
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The 1-bit object "Ventilation, auto/manual" only allows change-over between automatic and
manual operation. It is not possible to switch the fan levels on using the object. This
function is reserved solely for local control.
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Local actuation of a button configured to "Function = Fan control" and
"Button function = Automatic" on the device deactivates manual operation and causes the
controller to change over to automatic operation.
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When changing from manual operation to automatic operation, the waiting time configured
in the ETS is taken into account in the case of a connected level change.
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The parameter "Fan level on change-over to manual" is not checked for plausibility in the
ETS, meaning that an incorrect configuration is possible. For this reason, care should be
taken to ensure that there is no level in the configuration which is higher than the actual fan
levels. If a level which does not exist is to be configured for the change-over to manual
control, then the fan controller changes over to the maximum possible level when changing
over to manual operation.
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In manual operation, the switch-on level only functions in certain situations (see next
section "Switch-on level").
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Software "Room controller display compact module 146x11"
Functional description
