JME Engineering Knowledge Base · Pakistan
Solar Inverter Integration Guide for PV Genset Controllers
Engineering compatibility guidance for PV–DG control with major on-grid inverter platforms used in Pakistan, including Huawei, Sungrow, Solis, SOFAR, Deye, SAJ, SMA, ABB, Inverex, Growatt, GoodWe and SignEng. Exact model, firmware and control interface are verified before commitment.
Compatibility first
The brand name alone does not confirm controllability
Huawei
SmartLogger/plant-controller architecture, permissions and supported active-power commands are verified.
Sungrow
Logger/COM interface, active-power mode and interaction with existing PPC functions are checked.
Solis
Exact model, communication adapter, register map and writable power-limit command are confirmed.
SOFAR
Gateway, firmware, control register availability and external curtailment behavior are verified.
Deye
Model-specific communications and supported active-power control method are checked before integration.
SAJ
Logger/interface, firmware and documented external power-control capability are verified.
SMA
Plant communications, control ownership and supported power-limitation interface are reviewed.
ABB
Exact inverter family, protocol documentation and supported active-power command are confirmed.
Inverex
Exact model and underlying communication/control architecture must be verified before commitment.
Growatt
Data access, command method, firmware and number of controlled inverters are validated.
GoodWe
Plant topology, supported gateway and response behavior for external curtailment are reviewed.
SignEng
Exact model, protocol documentation and writable control interface are verified before engineering.
Compatibility status: brand presence in this engineering guide does not by itself mean every model is universally compatible or that JME has deployed every listed brand. JME confirms the exact model, firmware, gateway/register map and writable active-power interface before quotation. Project-verified integrations are identified only where JME project evidence is available.
Technical checklist
What JME verifies before quotation
- Exact inverter and data-logger model numbers
- Firmware versions and site topology
- Modbus TCP/RTU or vendor gateway availability
- Writable active-power limitation register or command
- Units, scaling, valid range and command persistence
- Readback confirmation and response time
- Control ownership conflicts with another PPC
- Fail-safe value after network or controller loss
System integration
The inverter is one part of the control loop
Reliable operation also depends on correctly located meters, generator status, breaker feedback, time synchronization, network design, reserve settings, alarm handling and commissioning tests.
Engineering answers
Frequently asked questions
Does Modbus monitoring mean the inverter can be controlled?
No. Read access does not guarantee that a supported writable active-power command is available.
Can different inverter brands be controlled together?
Potentially, but each interface and response must be engineered and tested. Mixed fleets increase mapping, timing and fail-safe complexity.
Why must firmware be recorded?
Register availability and command behavior can vary across firmware revisions, gateways and regional models.
Review your plant before selecting a controller
Share the SLD, inverter models, generator controllers and operating objective with JME.