Saia-Burgess Controls AG
Manual for PCD7.L79xN room controllers
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Document 27 / 602
E
N02 │ 2013-11-27
Type description
Technical data
6-9
6
6.2.3 Technical data for PCD7.L792N
24 V
AC
compact room controller for heating or cooling with 2 TRIAC outputs to
control two thermal valves (PWM) or one 3-point valve (open/close), an integrated
temperature sensor and 2 digital inputs, with analogue operation for set-point setting
and presence sensor with LED display.
S-Bus
RS485
Service
Pin
/D
D
E1
E2
Aux
Input
Window
Contact
Y1
24V
24V
800 mA
PCD7.L791N
3
1
2
6
4
5
6
7
8
8
7
5
2
4
3
1
Power
Supply
24VAC
Y2
A
B
Designation
Terminal
Description
Power supply
24 V, GND
24 V
AC
, 1.5 W typ. without actuating drives.
Outputs
Terminal
Valves Y1/Y2
Y1, GND, Y2
Triac outputs 24 V
AC
, 10
…
800 mA to control
2 valves with PWM signal or one 3-point valve.
When Y1 and Y2 are used at the same time,
then the max. output current will be 800 mA for
both combined.
Inputs
Terminal
Window contact
E1, window con-
tact
Digital input for floating contacts.
Additional input
E2, aux input
Additional digital input for floating contacts.
Communication
Terminal
Communication
/D, D
SBC Serial S-Net, slave, data mode
Interface
RS-485, max. cable length 1200 m, max.
stations see technical data
Transmission rate
4
800, 9
600, 19 200, 38 400, 115 200 bit/s with
automatic detection after restart
Note
For a detailed description of the inputs/outputs, see "General technical specification".