Rs 485 Communications Connections - ZIGOR ZGR SOLAR STR 250 Manual De Operación

ZGR SOLAR STR 250
4.4.6.3 Installing the PV Connectors
1) Rotate all the DC switches to "OFF" position (Fig. 4-40).
NOTE: Skip performing step1 when the actual device is not equipped with DC switches.
2) Check the cable connection of the PV string for polarity correctness and ensure that the open circuit
voltage in any case does not exceed the inverter input limit of 1500V (Fig. 4-41).
3) Connect the PV connectors to corresponding terminals until there is an audible click.
NOTICE
Check the positive and negative polarity of the PV strings, and connect the PV connectors to corresponding
terminals only after ensuring polarity correctness.
Arc or contactor over temperature may occur if the PV connectors are not firmly in place, and ZIGOR shall not
be held liable for any damage caused.
4) Follow the foregoing steps to connect PV connectors of other PV strings.
5) Seal the unused PV terminals with the terminal caps.
4.5

RS 485 communications connections

The following figure shows the position of the communication wiring board in the inverter as well as the terminals
equipped for the wiring board (Fig. 4-42).
Operation manual
Fig. 4-40 Rotate all the DC switches
Fig. 4-41 Check the cable connection
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