20
5.7 Integrated Humidity Controller
5.7.1 Function
The integrated humidity controller is a new feature for all AT 3000 units with software version XP 16B or higher. This
newly designed and programmable function enables the humidity in the duct or in the ambient to be controlled. For
connecting a humidity sensor to the integrated humidity controller the proportional adaptor (Art. 912 10 00) is
required.
The controller function is activated in the service level of the AT 3000 unit, afterwards the set point humidity and the
proportional band are set in the following menu points of the service level. The microprocessor electronics of the AT
3000 then controls the steam capacity of the AT 3000 as P-controller.
5.7.2 Settings
press «T4» until LED lights up at "
Service Level
"
press «T5 SELECT» until display shows
Hc
(
H
umidity
c
ontrol)
chose with «T6 SET» the desired operating mode (
oF
,
1
or
2
)
change to
rH
with «T5 SELECT» and enter set point humidity with «T6 SET» (30...99%)
change to
Pb
with «T5 SELECT» and enter proportional band with «T6 SET» (5...15%)
After the integrated humidity controller is activated the display shows the measured actual relative humidity
(instead of the two horizontal hyphens).
5.7.3 Humidity Sensor
The integrated humidity controller of the AT 3000 operates with active humidity sensors which are connected to our
proportional adaptor. All common and codable sensor signals can be processed. A control voltage of 24V DC for the
sensor is available from the humidifier, should the sensor need any other supply voltage, this needs to be taken from
another source. For the wiring of the sensor please refer to diagram 344 24 38.
☞
☞
☞
☞
☞
Hc oF
Integrated humidity controller switched off, control via external controller
Hc
I
Controller activated (for single units or parallel operation of double units)
Hc 2
Controller activated for sequential operation of double units
