Defensor Mk5 Technical Documentation

38
Control signal / Humidity sensor signal
The connection of an external active controller “A1”, a passive controller “A2”, an On/Off Humidistat “A3”
or a humidity sensor (for control via the internal controller), is accomplished on the appropriate contacts
on the terminal strip in accordance with the connection schematic. Note the following connection
information:
Controller
extern intern
Connection active controller passive controller On/Off controller Humidity sensor
“A1” “A2” “A3”
Pos. Jumper JP2
24V 5V
– neutral JP2
X X
24V 5V
– 5V JP2
140 Ω…10 kΩ
24V 5V
– 24V JP2
X
Rotary switch S3
Pos. Signal
0 No signal selected
1 On/Off 24V X
2 0…5 VDC (Potentiometer) X
3 0…10 VDC X X
4 0…1 VDC X X
5 1…5 VDC X X
6 2…10 VDC X X
7 0…20 V Phase intersect X X
8 4…20 mA X X
9 0…20 mA X X
Note: The controller humidity sensor is to be mounted at a suitable position in the duct after the steam
distribution pipe, with a minimum separation of 5 times the humidification distance B N (but not close to
the heating or cooling units of the ventilation system).
Please refer to the separate installation instructions for the controller/sensor when positioning and
connecting these components.
Control cable for versions with two units
The supplied control cable (flat ribbon cable) is connected to terminal “J6” on the control board of unit A
and to terminal “J7” on the supply module of unit B.
Connecting the fan unit
See separate documentation “Fan unit”
RS232/RS485 connection
See separate documentation “Interface RS232/485”