WRU90001 is a wireless, battery powered HMI unit. The device features temperature, humidity and CO2 sensors, the values of which can be displayed to user on a large LCD display. It features a native modbus
map that grants seamless integration into the DDC/SCADA system. The communication is based on the
encrypted Midam KFP protocol, which allows to update the device firmware on a wireless basis.
APPLICATION
- HVAC control
- measurement of temperature, humidity and CO2
- display of status values
- wireless integration into SCADA control systems
FUNCTION
The wireless room unit measures temperature and relative
humidity. It allows to set the desired temperature setpoint
and operating modes using the rotating knob. The values
are transmitted through the 868 MHz unlicensed band to
the WCOM51 gateway. There is also an
option without rotating knob and display available. The room unit features a native
modbus map with the direct read and write functionality. The
modbus map is available in a separate document. All settings
and configuration are also stored in a modbus register, directly in the device. It is necessary to pair the device before first use.
SCADA system integration
The controller can be integrated into DDC or SCADA systems
directly via the WCOM51 wireless gateway.
PAIRING
To pair your own sensors with the WCOM51 GSM gateway, the freely downloadable KFP-Lite software is available, which communicates with the gateway using the WUSB01 wireless USB configurator. Both devices must be powered and placed in close proximity to each other. Using the search function in the software interface, you can view a list of all available devices in range and assign or modify parameters based on the wireless identification code for each individual device.
Using KFP-Lite, it is possible to change the communication frequency (default value 868.95 MHz).
Remove the base lid of the controller by gently pressing it on the sides. Remove old batteries from the bracket and place new
batteries. Observe the battery type and polarity. Always replace both bateries with fresh ones. Then put both parts together and
close the controller again.
DISPLAY
The large LCD shows the current temperature, humidity
and fancoil controller status using segment symbols,
standard symbols for day and night mode, time programs
and activated output. At the top of the display there are
symbols indicating the day of the week. The bell symbol
indicates a communication error, while the side wrench
symbol indicates weak batteries.
