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Saia-Burgess Controls AG
3.1.4 Technical data for PCD7.L643
Room control unit with temperature sensor, function keys and display for HeaVAC
functions.
Pin allocation
Interface
Serial bus
Functions
Function
Sensor
Set point setting
Manual for PCD7.L6xx room operator units │ D ocument 26-859 ENG07 │ 2 015-06-04
Terminal
Description
RC
The connection to the room controller is made with the
PCD7.L670-xx directly to the controller, or where exten-
sion modules are used for light and shade, to the last
module. The PCD7.L670-xx connecting cable is precon-
figured at both ends and is either 10, 30 or 50 m long.
The maximum length between the room controller and the
room control unit must not exceed 50 m.
Description
Room temperature sensor. Measurement range 0...40 °C.
To set a configurable set point displacement. Set in +/- 6
steps via the display. The base set point held in the room
controller can be increased or decreased in steps. The
step size is stored in the room controller configuration.
See description of Config FBox or registers (reg. 104).
When the Plus, Set and Minus keys are pressed together,
the current set point is displayed for approx. 20 seconds.
Digital room controller units
PCD7.L643
HEVAC function
Set
Display
Controller
RJ 9
PCD7.L670-xx
3
3-8
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