Growatt MAX 100-150KTL3-X2

Compatibility

Direct Edge integration not yet verified

Growatt’s manufacturer-authored V1.24 map names MAX/TL3-X and defines first-group state, power and frequency registers. It does not enumerate every newer suffix. Use this starting revision with the installed serial settings and compare readings with the local display.

MAX 100-125KTL3-X2 LV or MAX 124-150KTL3-X2 MV only. Record the full model, grid variant, firmware and communication accessory before requesting the matching interface specification.

Models

Specifications

The LV and MV groups use different AC voltage classes. The nameplate rating and suffix must be captured before applying electrical or monitoring assumptions.^1, 2, 3

Model range

100 to 125 kW LV variants and 124 to 150 kW MV variants^1, 2, 3

PV inputs

Eight MPPTs with two strings per tracker^1, 2, 3

Published interfaces

RS485, USB and optional PLC; LV literature also lists optional GPRS, 4G and Wi-Fi^1, 2, 3

Installation limits

IP66; -30 to +60 °C^1, 2, 3

Interface

Documented measurements and integration boundaries for MAX 100-150KTL3-X2.

• V1.24 first-group input 0 gives operating state, 35/36 give AC output power at 0.1 W per count, and 37 gives frequency at 0.01 Hz. These are inverter production measurements, separate from the site import/export meter.
• Every value must retain its source device and measurement boundary; inverter, meter, logger and controller values are not interchangeable.
• No export-control, power-command, battery, generator, protection or grid-setting write is approved by this guide.

Setup

1. Record the complete identity

   Photograph the nameplate and record the exact model, serial number, installed firmware and communication accessories. Do not select a point map from the family name alone.

2. Map the commissioned topology

   Identify the installed logger and RS485 terminal type. The X2 manual gives RS485-1 IN on pins 3 A1/4 B1, OUT on 5 A1/6 B1, and shielding on 1/2. Preserve existing logger and export-control roles; do not add a second polling client to the same bus.

3. Read state, power and frequency

   Use the commissioned inverter address with one polling client. V1.24 specifies 8N1, default 9600 baud and at least 850 ms between commands, recommending 1 s. The X2 manual describes 38400 baud: use the installed settings. FC04 input 0 reads state: 0 waiting, 1 normal, 3 fault. FC04 wire 35, quantity 3, uses PDU 04 00 23 00 03. Join registers 35/36 high word first as an unsigned integer and multiply by 0.1 W; register 37 is frequency × 0.01 Hz. Synthetic bytes 00 01 E2 40 13 88 give 12345.6 W and 50 Hz. Addresses are zero-based wire offsets; the PDU omits address and CRC. Compare with the local display before extending this MAX-family starting map.

4. Keep control outside this guide

   Do not propose active-power, reactive-power, export-limit, battery, generator, protection or grid-setting writes. Those functions need a separate engineered control and safety case.

Common questions

Does a published RS485 or Ethernet interface prove direct Edge compatibility?

The X2 manual establishes the monitoring wiring. Growatt V1.24 supplies a MAX-family Modbus RTU starting map: the setup procedure gives state, power and frequency reads. Use one client and compare locally; a ready-made Edge import is separate.^{1, 2, 3, 4}

Can inverter values replace the point-of-connection meter?

No. Inverter telemetry describes conversion equipment. PCC control, protection, billing and settlement require their commissioned independent measurements.^1, 2, 3

Does this guide support plant control?

No. It publishes no Edge write path. Export, active-power, reactive-power, battery, generator and protection functions remain with the commissioned control system.^1, 2, 3