Dataloggers for E-Ref reference modules

  • -REF/01
  • &
  • -REF/03

By using an E-Ref and a reference module together, you can get the most accurate measurement of the operating conditions at your photovoltaic power plants: effective irradiance, front and rear irradiance, and module temperature.

The E-Ref measures the short-circuit current (ISC) and open-circuit voltage (VOC) of a reference module, calculates the corresponding irradiance and cell temperature values, and communicates them directly to SCADA via ModBus. It is available for single-sided (E-Ref/01) and double-sided (E-Ref/03) reference modules.

E-Ref/01E-Ref/03
Maximum voltage60V60V
Maximum current20A20A (Ch 1 y 2) & 5A (Ch3)
Number of inputs13
Measurement resolution1mV/0,3mA1mV/0,3mA (Ch 1 y 2) & 0,1mA (Ch3)
Communication inputsModBus/TCP
Communication portsRJ45
IP protection20
MountingCarril DIN
Power supply12/24 Vdc
Power consumption30mA60mA
Dimensions54×90×5890×90×58
Weight (X-Y-Z)90 grams90 grams
  • Prevents continuous short circuits in the reference modules for Isc measurement and thus protects them from hot spots.
  • The reference module calculates the corresponding irradiance and temperature values ​​according to IEC 60904-2 and IEC 60904-5 standards.
  • All measured values ​​are stored in ModBus registers, which can be accessed by a central SCADA via TCP/IP protocol.
  • Direct communication with the plant SCADA via ModBus. Independent calibration of the reference module and the E-Ref module.
  • Up to 12 days of data storage.
  • Complies with IEC 60904-2, IEC 61724-1 (Class A for POA), IEC 60904-6 (calibration), and IEC 60904-5 standards.

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