Free programmable room controller - MIDAM H/WLx7002xx
Free programmable room controller based on i.MX RT processor (FreeRTOS) and capacitive touch screen. It contains temperature, relative humidity and light intensity sensors. As an option it can feature CO2 sensor, various communication interfaces (Ethernet, RS485, KFP wireless) as well as multiple inputs/outputs.
- Temperature sensor
- Humidity sensor
- Sensor CO₂
- Light intensity sensor
- Capacitive LCD touch screen 4,3”
- Ethernet, RS485, Midam KFP
Temperature 
Humidity 
Wireless Function
The free programmable room controller H/WLx7002xx contains i.MX RT processor type with FreeRTOS operating system. It is based on a high performance process platform for user application/ graphic development. The system is open and it is possible to create customised user interfaces, control programs, data collection applications, or to manage other processes. The controller has its own real-time clock, backed up with internal battery. As a default the H/WLx7002xx has no user application available. The application is created and uploaded in the integrated development environment (IDE) provided by the device manufacturer. The H/WLx7002xx is delivered with temperature and relative humidity sensor as a standard or equipped with CO2 sensor as an optionand it features a built-in light intensity sensor too. The optional equipment is specified by a special device code (-xx). The combination options are listed at the end of the document and correspond to the Midam price list.
Application
- HMI for various HVAC applications
- Control of fan-coils and convectors, floor and radiator heating, AHUs, air-conditioning units
- Control of boilers, DHW, heating circuits,
- General BMS interfacing, monitoring of room temperature, relative humidity or CO2
- SCADA system integration
KFP Wireless communication option
Wireless communication is based on an unlicensed 868 MHz band and uses higher radio frequency transmitter power up to +20 dBm. WLx7002xx embeds AES 128-bit, the most secure encryption standard for wireless connections to date and is compatible with the entire range of Midam KFP wireless system devices.
Programming
The main programming tool is the IDE package which contains I/O editor, graphical editor of the function plan (FBD), structure text editor (according to IEC 61131-3) and compiler. The application program consists of function blocks which are stored in libraries. Those contain analogue and digital functions, mathematical blocks including goniometric functions, time schedulers, alarm blocks, and HVAC specific blocks (heat recovery, dew-point calculation, enthalpy, pump switch etc.). The program can be set up also as structured text (ST) or with combination of both types of programming languages. The IDE package contains LCD menu editor as well as web editor (HMI).
Midam KFP Pairing
Two devices are required for mutual communication. Both must be powered and located in close proximity to each other. Usually, wireless gateway or configuration dongle is used to set up remote wireless devices. Use look-up function in software tool to display a list of all available devices in range and assign or adjust parameters based on wireless ID code for each single device. There is a comprehensive help section integrated in the software tool to provide support during the wireless device set up procedure.
Scada system integration
Direct integration into various SCADA systems through wired Modbus RT, OPC UA, Modbus TCP or BACnet/IP (RJ45) protocols is possible.
Midam KFP Password change
Prior to the first use, the encryption password (default “MIKROKLIMA1234AB”) must be changed using the WUSB01 configuration dongle and the relevant software tool.