Measure grid frequency and site load, and switch or set assets on site when the programme calls. ZDR controllers, the ZGW-20 Gateway and Edge connect batteries, standby generators and flexible loads to your demand-response or VPP provider.
Batteries, standby generators and flexible loads respond to a programme in different ways. Bring the measurements, equipment state and control interface for each asset into one site data model.
A controller for each asset that responds, a meter for the rest of the site, and one Gateway running Edge. Each ZDR meters its own supply, so the response is measured by the device that made it.
Meters the asset's supply to Class 0.5S, samples grid frequency at least every 100 ms and responds on site: a relay for a load or a generator, or a Modbus set point for a battery or UPS.
Meters the point of connection and the loads that do not take part, so each event can be read against the whole site.
Connects the controllers and meters over Zigbee, runs Edge for dashboards, history and local rules, and carries data to the provider's platform.
When grid frequency falls, a frequency-response service needs contracted assets to cut demand or add supply within seconds. The ZDR measures frequency at the site and acts on it there, so the response does not wait for a message from a platform.
The ZDR acts on grid frequency at the site, the Gateway runs Edge, and a VPP or demand-response platform takes the readings and sends the programme’s instructions.
Configure devices, compare data, build dashboards and run rules on site.
Gateway running EdgeConnect a VPP or demand-response platform for portfolio decisions, dispatch and market participation, with the commands, limits and acknowledgements agreed for the project.
Compare battery state of charge with charging, discharging and solar generation. Use the time controls and sensor list to see how the system responds through the day.
Explore data tools in Edge
Readings, schedules and equipment state trigger actions in Edge. A partner’s dispatch service can connect too, with agreed permissions, limits and what happens when the connection drops.
Automation in Edge
Each guide sets out the measurements, the control interface, the safe states and the commissioning checks for one kind of asset.
A supported protocol is where a project starts. An engineer works with the partner to test the complete system against the programme it will deliver, then records the configuration and support.
ZDR-20 answers under-frequency through its own relay, rated 4 A at 250 V AC, to drop a load or call a standby generator. ZDR-21 does the same and adds GPS time sync and 20 ms recording around each event, which several programmes ask for as evidence. ZDR-22 follows grid frequency continuously and sends a changing set point to a battery or UPS over Modbus. Every model meters its supply to Class 0.5S.
The ZDR samples grid frequency at least every 100 ms, at 0.01 Hz resolution, and acts on site, so the response does not wait for a platform message. The time a programme measures also includes the asset's own reaction, so the complete installation is tested against the programme's own procedure.
Not to monitor assets, analyse data or run local automation: those are built into Edge. A VPP or demand-response provider supplies the portfolio orchestration, trading and commercial service needed to take part in wider programmes.
Yes. A flow on the Gateway sends the readings and receives the instructions your platform uses, over MQTTS or HTTPS. Together we agree the data and command model, the credentials, what happens when the connection drops and who operates each part.
Tell us about the assets you want to monitor or control and the service you plan to join. We'll work through the site requirements with you.
