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The Fan (exhaust) function

Description

The Fan (exhaust) function switches a function and leaves a relay, dimmer, flag or local mood, in active mode for a preset time after the first function has been switched off.
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Parameters

Name
Put in here a short and clear name for the 'Fan (exhaust)' function.
Select Light
this parameter defines the first function which is called when the 'Fan (exhaust)' function is activated. 4 functions can be selected: 'Relay', 'Dimmer', 'Local Mood' and 'Flags'. Depending on the selected function several specific function parameters have to be put in. Consult for this matter the description of the specific function.
Select Motor
this parameter defines the 2nd function which becomes or remains active for a set duration when the first function is switched off 4 functions can be selected: 'Relay', 'Dimmer', 'Local Mood' and 'Flags'. Depending on the selected function several specific function parameters have to be put in. Consult for this matter the description of the specific function.
Duration
this parameter is defined on the right hand side in the 'Select Motor' field. The 'Duration' determines how long the 2nd function (motor) remains active after the 1st function (light) has been switched off. This parameter can be set from 0 sec. till 7200 sec. in steps of 1 sec. Standard the duration is set at 120 sec.
Options - Setting
This parameter determines when the 2nd function (motor) has to be activated. In this case 2 settings are possible:
Ventilator ON when lights are switched off
with this setting the 2nd function (motor) is activated when the light is switched off. The 2nd function is active only for the set duration.
Ventilator ON when light is switched
with this setting the 2nd function (motor) is activated simultaneously with the 1st function, when the 'Fan (exhaust)' function is switched on. When the 1st function (light) has been switched off the 2nd function (motor) remains active for the set duration.

Standard function behaviour on an interface

'Short
With a short push on the button the 1st function (light) is switched as defined in the 'Fan (exhaust)' function. If set like that the 2nd function (motor) will be switched as well.

When the function is switched off the 1st function (light) will be switched off and the 2nd function will remain active for the set duration.

Long
The functioning is the same as described under 'Short'.

Function behaviour when operating in another function

'Fan (exhaust)' type

The 'Fan (exhaust)' function can be selected from another function. When the other function is switched on, then the 'Fan (exhaust)' function will work as described in the selected target value.

On
The 'Fan (exhaust)' function is activated. The 1st function is switched in accordance with the settings and if set, the 2nd function will be activated as well.
Off
The 'Fan (exhaust)' function is switched off. This means that the 2nd function (relay) will be activated during the set duration. If the 1st function (light) is switched on, then this function is switched off. If the function was switched off, it will remain switched off.
On/Off
The 'Fan (exhaust)' function is activated: the 1st function and (if set like that) the 2nd function is switched. When the function is switched off, the 'Fan (exhaust)' function will switch off as well: the 1st function is switched off and the 2nd function remains active for the set duration.
Off/Off
The 'Fan (exhaust)' function is switched off. The 2nd function is activated for the set duration. The 1st function is switched off or remains switched off.

When the function is switched off, the 'Fan (exhaust)' function will be switched off again. The 2nd function will be activated again for the set duration. The 1st function remains switched off.

Not every function can be switched off. Consult for that matter the description of the respective function.

Application Example

  • In a bath room, shower or toilet, a fan is activated when the light is switched on and stays on for a number of minutes after the light is switched off again.
  • In the lavatory of a company every toilet has his own light but the fan is for all the toilets (there are several Fan (exhaust) functions made with another light but with the same motor). The Fan (exhaust) function is so 'intelligent' to switch off the fan only when the 'run time' of all Fan (exhaust) functions are finished.

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