The MODBUS 485 RTU converter called "M-Box" is a digital signal conditioner to convert the Voltage output of a
solar radiation sensor, PT-100 or 10kΩNTC temperature sensor into a MODBUS 485 RTU output. The converter
can be used with all passive EKO radiometers or any other mV sensor to be connected to data loggers or inverters
with a MODBUS 485 RTU input channel. By using the signal conditioner the sensor cable can be easily extended
over long distances without any signal loss or potential electromagnetic interference in noisy industrial
environments. With MODBUS up to 100 different sensors and converter units can be addressed and connected in
parallel.
The mV signal of the solar sensor will be converted to irradiance 0 - 1600 W/m2. In this case the sensitivity factor of
the solar sensor will be set to the converter. With the optional USB controller and EKO Sense software (Multiple
languages) the converter settings can be freely changed. This tool will be needed in case the sensor sensitivity
might need to be changed after a periodical solar sensor re-calibration.
For practical installation, the converter is placed in an IP65 Aluminium box with universal cable glands. It has
robust input/output screw terminals, which can be easily connected to the signal cable that leads to the
measurements system at the installation site. EKO can pre-connect the solar sensor cable to simplify your
process.
•The converter proportionally converts the solar sensor output voltage (V) into irradiance (W/m2).
•Input (mV, PT-100 (2,3,4W), NTC 10kΩ) / Output irradiance (W/m2) and Temperature
•Up to 100 converters in one system.
•In combination with a solar sensor sensitivity will be pre-set.
•In case of a sensor re-calibration, the converter-setting scan be easily changed with the optional
USB controller and EKO sense software.
