PVI-55.0/110.0 - PVI-165.0/220.0 - PVI-275.0/330.055 to 330 kW

1. Purpose and General Function

This communication and control board manages the interface between the inverter’s power modules and external systems.

It processes alarm signals (ALM),

Handles remote ON/OFF control,

Provides CAN bus and RS-485/Modbus communication,

Manages digital I/O lines for integration into plant monitoring and supervisory control systems (SCADA, PLC, dataloggers).

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2. Connectors and Signaling

The board is equipped with several types of connectors, each with a specific role:

Multi-pin connectors for linking with inverter power modules.

Relay contact terminals for configurable alarm and auxiliary signals.

Serial communication interfaces (RS-485/Modbus) for external monitoring and control.

CAN bus connectors (on some models) to allow communication between modules or external CAN-based systems.

These interfaces allow the inverter to report its operating state, alarms, and to receive commands.

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3. Jumpers and DIP Switch Settings

The board includes jumpers and DIP switches used during commissioning to select operating modes, for example:

Remote ON/OFF control mode selection.

Configuration of auxiliary relay contacts (e.g., whether a relay closes on alarm, fault, or general status).

Parallel or independent operation modes for certain inputs or communication settings.

RS-485 bus termination enabling/disabling when the inverter is at the end of a communication chain.

Correct jumper/DIP switch configuration is essential for proper system integration.

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4. Network Integration and Monitoring

Through this board, the inverter provides all necessary signals and data for plant monitoring and control.

Available signals: alarms, operating status, fault conditions, and energy production data.

Communication protocols: RS-485 with Modbus RTU, plus optional CAN bus.

Integration targets: external PLCs, SCADA systems, and monitoring software.

This ensures that the PVI central inverter can be supervised remotely and integrated into large-scale PV plant management systems.

Used. Tested