Installation and Operation Guide SOLECTRIA® PVI 25TL-208, PVI 50TL-480 and PVI 60TL-480
DOCR-071030-A (10/7/2022)
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DC Arc-fault Protection
The inverters include DC Arc-fault detection compliant with UL 1699B-2018. The inverter will detect electrical
noise that is indicative of a DC series arc. Upon detection of an arc-fault, the inverter will cease operation.
Module-Level Rapid Shutdown
The RSD versions of the inverter wire boxes include a Sunspec powerline communication transmitter for use with
certain APsmart, NEP or Tigo receivers. Please order the corresponding wire box to the receivers used on site as
the transmitters are different. These inverters are PVRSS certified with APsmart, NEP and Tigo devices to perform
module-level rapid shutdown in compliance with 2017 NEC 690.12.
When the inverter is connected to AC power, the PLC transmitter receives power via an integrated power supply.
Once the transmitter is powered it will send a “keep alive” signal to the rapid shutdown receivers at the array.
Once the inverter senses the grid is missing, whether by the opening of the PV system disconnect, inverter circuit
breaker or by a loss of grid, the transmitter will cease sending this signal. When the rapid shutdown receivers at
the PV modules do not receive the “keep alive” signal, they enter shutdown mode reducing the module output to
at most 0.6V. The transmitter is capable of signaling these devices up to 500’ (1000’ entire circuit length; to the
module and back).
Please refer to the RSD Compatibility and Listing Matrix Application Note for the most up to date information on
models that have been tested and listed with Solectria inverters.
Every module-level rapid shutdown system has specific installation instructions for its receivers. These installation
instructions, found on the original manufacturer’s websites, must be followed for a successful and safe
installation.
Communication Overview
The SOLECTRIA PVI 25TL-208, PVI 50TL-480, and PVI 60TL-480 inverters support industry standard Modbus RS-485
communications for monitoring purposes. In addition to SolrenView and/or third party monitoring, these
inverters are also able to send data to an online portal which is used for remote diagnostic purposes. This
capability can provide remote firmware upgrades and remote troubleshooting and is an accessory that is available
for individual purchase. This function is performed by the Ethernet Network Card (version ENC-G4 and above).
Each Ethernet Network Card can handle up to 32 inverters. If a site has more than 32 inverters, additional
Ethernet Network Cards will be needed. When a third party monitoring system is used, the DAS can be connected
to the Ethernet Network Card, and the Ethernet Network Card is then connected to the inverters or if no Ethernet
Network Card is desired, the DAS can be connected directly to the Communications Card.
Each inverter has a Communication Board installed in the wiring box which is used to daisy chain the inverters
using RS-485 for communication purposes. The Ethernet Network Card should be mounted on the
communications card of the first or last inverter in the daisy chain.
