Common Wiring Mistakes When Installing LoRa

Common Wiring Mistakes When Installing LoRa

Overview

Incorrect wiring can cause communication failures between the inverter and the meter. This guide outlines common mistakes and how to avoid them.

Common Errors

Mistake

Description

Corrective Action

Using wires from two different pairs

Mixing pairs causes signal imbalance and data loss.

Use only one twisted pair for both A and B.

Reversing polarity (A ↔ B)

Causes no data transmission or erratic readings.

Ensure white → A (+), colour → B (–).

Loose or incomplete terminations

Poor connections result in intermittent LoRa communication.

Check terminals are securely fastened.


If your LoRa device is not communicating with the inverter or meter, wiring may be the cause. This article explains how to diagnose and correct it.

Symptoms of Incorrect Wiring

  • No data displayed in monitoring portal.

  • Meter readings not updating.

  • Inverter showing “LoRa Disconnected” or “Comm Error”.

Quick Diagnostic Steps

  1. Power off the inverter before inspection.

  2. Check that LoRa A is connected to Meter + (10).

  3. Check that LoRa B is connected to Meter – (9).

  4. Confirm that white = A and colour = B throughout the run.

  5. Verify that both A and B wires are from the same twisted pair.

Corrective Actions

  • Re-terminate any loose connections.

  • Replace damaged or mixed-pair cables.

  • Reset and reconnect after ensuring correct polarity.


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