Setting Range Of Switching Stages - Helios KWL-BE Mode D'emploi

Operating instructions
UK
CHAPTER 2
CONTROLLER
FUNCTIONS
Slide switch controller KWL-BE
2.0 Controller KWL-BE with operating display
All Helios KWL compact units with the easyControls control system can be controlled via
the flush-mounted slide switch controller KWL-BE (Ref. no. 4265; housing for flush-
mounted installation KWL-APG, Ref. no. 4270). It enables three manually definable ope-
rating stages, which can be adjusted via the potentiometer on the circuit board (with Phil-
lips screwdriver, Ø 3mm; Fig.1).
The airflow rate of the extract air fan can deviate in relation to the supply air fan in the
range of ±20 % via the potentiometer "OS".
ΠSlide switch
 Scale Stage S1-S3
Ž Operating display
i.e. Error display
"Blinkcode"
see section 2.2
Potentiometer:
ΠStage S1
 Stage S2
Ž Stage S3
 Offset "OS"
 "A1"
‘ "GND" (Ground)
’ "o" (Measur. point)
(Measur. point)
“ "S"
(Measur. point)
” "A"
• Operat. display LED
TIP: Voltage measurement:
The output voltage of the supply
air fans can be measured in the
set operating stage via GND and
S.

2.1 Setting range of switching stages

The controller KWL-BE has 5 potentiometers:
Potentiometer description
S1
S2
S3
OS
A1
GND
o
S
A
*Offset = Deviation of extract air fan from supply air fan ± 20 %
Ž
Œ

•
Ž
”
“

’
Œ

‘
Scale Description
Stage 1 of supply air fan
Stage 2 of supply air fan
Stage 3 of supply air fan
Offset* for extract air fan
Voltage external command
Ground
Offset voltage
Voltage slide switch
Voltage external command
2
Fig.1
Potentiometer
adjustment,
Œ to 
RJ12
Control line
GND / 1 2 3
Bridge to terminal 2/3
(Factory setting,
see SS-1071)
Setting range
0 to 10,0 Volt
1,7 to 10,0 Volt
1,7 to 10,0 Volt
3,7 to 5,5 Volt
1,7 to 10,0 Volt
-
Measuring point
Measuring point
Measuring point