Download PDF· Rev 0.5 Energy Management System

Nexus EMS

The Brain of Your Hybrid Power System

01ControlEvery source, battery and load

02IntegrationEvery brand, one system

03ProtectionBattery and equipment first

04OversightEvery decision on record

One Site. One Controller.

Nexus Lite · Nexus 4G · Nexus HMI

Nexus EMS is an energy management system (EMS) that runs a whole hybrid or off-grid site. It sits above the device controllers and makes the energy decisions for all of them: on site, offline if need be, with no custom PLC programming.

Control01

Solar: Charging held within the battery's limits
Generators: Automatic start and stop, sequencing, minimum load, quiet hours
Battery: Charge and discharge control, with a reserve
Grid: Peak shaving, time of use, export control
Loads: Low-battery load shedding, dump loads
Custom rules: Control logic written for your site

Integration02

Any brand: Every function works the same on every supported brand
Groups: Several inverters or generators run as one
SCADA: The whole site on one Modbus TCP address
Remote dispatch: Accepts limits and run requests from SCADA or a utility
AERL Cloud: Live data, history, alerts, remote commissioning

Protection03

Battery: Designed to act when a battery limit is exceeded
Priority: Protections take priority over operators and schedules
Interlocks: Checks each device before a command, and the result after
Fail-safe: Designed so charging stops and loads stay supplied if control is lost
Access: PIN at the site; approved clients only for SCADA

Oversight04

Dry run: See what a function would do before it is allowed to act
Reasons: Shows what set every limit and command, and why
Audit: Every command, refusal and settings change is logged
Watchdogs: Steps in if a self-managing inverter exceeds the battery's limits
Resilience: Critical functions run independently and restart automatically

Works with

Type	Equipment	What Nexus EMS does
Solar charge controllers	AERL CoolMax SRX and SRX-R	Aggregates CCL and CVL and monitors operation
Batteries	AERL LiFe², AERL Kakadu 120, Solinteg, Pylontech	Reads its limits and keeps the site within them
Inverters	Solinteg M2HT (AERL All-In-One), Selectronic SP PRO, Deye, CE+T, XESS	Starts and stops, sets charge and discharge, supervises
Generator controllers	Deep Sea Electronics, ComAp, DEIF, Woodward	Sets mode, starts and stops, resets alarms
Meters and outputs	Modbus energy meters, Nexus 4G relays, Modbus remote I/O	Reads meters, switches relays

Preliminary information. Functions and supported equipment are subject to change; confirm availability with AERL. Nexus EMS decides about once a second: fast protection, synchronising, breaker control and required export limits stay with each device. It protects equipment and is not a functional safety system.

Supplied by

Australian Energy Research Laboratories
1/75 Bluestone Circuit, Seventeen Mile Rocks QLD 4073

Licensing

Annual licence, per gateway
Activated in AERL Cloud

Contact

[email protected]
aerl.com.au