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11.2 Device control
11.2.1 Continuous control - analogous input
Due to the integrated continuous controller CT1, no constant external control signal is
necessary.
The analogous input (InP1) was set to 0-10 V linear signal in the factory. It is possible to
adjust that value via measured value correction (OFFS), filter time constant (dF) to the
corresponding measuring application.
The room humidity transmitter BO-FWL or BO-FK-80J duct humidity transmitter, from the
optional accessories, is connected at 9(+) and 10(-) and for the power supply of the
transmitter at 11(+) and 12(-) for humidity signal 0-10 V. Please make sure that
connections are made with the correct polarity (+/-).
Tab. 11-3 - Connection of the BO-FWL
11.2.2 Fault signal - value below set humidity value
With the limit comparator - limit signal of the continuous controller CT1 it is possible to gen-
erate a signal if the value falls below the set point value. Using the 10-poles connector ter-
minal 5/6, a potential-free relay contact for external signalling is available. If the value falls
below the limit value, the relay contact is closed and "Alrt" appears in the display. Changes
in the limit comparator settings can be made in the controller configuration at LC1.
Default setting limit comparator → limit comparator (LC1)
Function (Fnct)
Limit value (AL)
Switching differential (HySt) :
Hysteresis function
Mode of action (AcrA)
Range behaviour (AcrA)
Acknowledgement (AcnL)
Switch-on delay (tOn)
Switch-off delay (tOFF)
Wiper time (tPuL)
LK actual value (LCPr)
LK set point (LCSP)
11.2.3 Control via Modbus RTU
The humidifier can be controlled via BOGA Modbus RTU both in on-off operation or in
continuous operation.
Further information can be found in the BOGA Modbus RTU interface description. This can
be requested from the manufacturer or viewed and downloaded from the
website.
[MBA_UB-1...4-CT_3.1_EN] Rev.: 02/2022 Translation of the original instructions
No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data.
All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express perm ission of BOGA GmbH, Werkstraße 16, D-59494 Soest.
UB/CT/31.1
Transmitter
Pin 9
Pin 2
Pin 10
Pin 1
Pin 11
Pin 4
Pin 12
Pin 3
Signal
Voltage supply +18 V
Voltage supply 0 V
Humidity signal + U
Humidity signal GND
Fig. 18 - BO-FWL room humidity transmitter
:
lk 4
:
15.00 (15% limit value below setpoint value)
1,000
:
Symmetrical
:
Relative
:
LK on
:
None
:
350 s (switch-on delay AquaDrain influence)
:
0 s
:
0 s
:
Actual value
:
Current set point
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