Saia-Burgess Controls AG
Manual for PCD7.L79xN room controllers
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Document 27 / 602
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N02 │ 2013-11-27
Functions, manual output control
Function
3-26
3
3.6
Functions, manual output control
Concept
As a rule, the channel reference of the RS-485 interface and the S-Bus station
address of the desired room controller are parameterised in the Room FBox. The
Room FBox can then communicate with the room controller. The "L79x AO" FBoxes
can be attached to the Room FBox. For this, an FBox name must also be configured
in the Room FBox. NOTE: The name must be unique within the project. The room
name is then entered as a reference into the "L79x AO" FBoxes.
L79x AO, analogue outputs
The "L79x AO" FBox can be used for remote control (RIO) of outputs not used by
the selected application. See sections on "Functions, settings, application" and
"Functions, settings, hardware".
L79x AO, definition of output
Analogue Output
All outputs are basically analogue outputs. Outputs Y3 and Y4 work proportionally
with 0-10 V. The switching elements such as Triac (Y1 and Y2) are operated by pulse
width modulation (PWM). The cycle time is entered in the hardware settings. Values
between 0.1 and 99.9 define the pulse/pause ratio. A value of 0 switches off a PWM
output permanently, while 100.0% keeps it switched on.
