The modular Solarcheck monitoring system consists of various devices for current and voltage measurement and an associated communication module.
 

Communication module:

• For connecting and collecting measured values from up to eight measuring modules
• Provision of data for transfer to higher-level controllers
• Supply of the connected measuring modules

Current measuring modules:

• 8-channel current measurement up to 20 A DC
• Detection of reverse currents of up to -1 A
• 4-channel extension modules for 20 A DC
• Digital input for monitoring, e.g., the remote indication contacts of surge protection modules
• Supply via the communication module

Voltage measuring module

• Voltage measurement up to 1500 V DC in any grounded PV system
• Connection and supply is usually via the analog input provided on the 8-channel Solarcheck current measuring module
• Output of the voltage measured value as an analog signal
• As an option, can also be removed from the Solarcheck group and used separately

The communication module collects the measured values from the current measuring modules and forwards them to a higher-level controller via RS485 Modbus.

• You can acquire up to eight or four string currents with one current measuring module each.
• A maximum of eight current measuring modules of any type can be connected to one communication module.
• The 2-wire communication cable is also used to supply the measuring modules with power. This means that no additional power supply unit is required in the field.
• The voltage measuring module is usually connected to and also supplied via the analog input provided on the 8-channel current measuring modules.
• All measured values can be read out of the communication module via open registers.