SolarEdge Inverter AC Relay Control Application Note

Below you will find brief information for Inverter AC Relay Control. This application note describes how to connect a secondary protection device to the SolarEdge inverter and how to configure the relay control.

PDF Download
Document
SolarEdge Inverter AC Relay Control Application Note | Manualzz

Advertisement

Advertisement

Advertisement

Key features

  • Secondary grid protection independent of inverter's internal grid protection
  • Device controls two contactors
  • Monitors grid parameters (voltage, frequency)
  • Automatically disconnects from grid if parameters are outside permitted range
  • Reconnects to grid once parameters are within range
  • Uses inverter's internal relays instead of external contactors
  • Saves cost of external contactors
  • Supports up to 15 inverters per secondary protection device
  • Operates in Normally Closed (NC) mode

Frequently asked questions

The secondary protection device is connected to the inverter's Power Reduction Interface (PRI) connector located on the inverter communication board. In an installation with a Control and Communication Gateway (CCG) the device should be connected to the CCG's PRI connector as shown in Figure 5. Only one of the four PRI signals (L1) is used to control the internal inverter relays.

Up to 15 inverters can be connected to a single secondary protection device.

The total length for all inverters' cable wiring cannot exceed 15 meters.

To use the AC Relay Control feature, the inverter communication board firmware (CPU) version must be 3.18xx and later. For an upgrade file and instructions, contact SolarEdge support. When AC Relay Control is enabled, all inverters in the system need to be configured to AC Relay Control mode. If a CCG is installed, it should not be configured to AC Relay Control mode.

Select Communication Server Select Server LAN Select GPIO Conf. Select Device Type< AC RELAY CTL+RRCR> (for systems with RRCR) or Device Type AC RELAY CTL (for systems without RRCR).

Select Communication Server Select Server LAN Select GPIO Conf. Select Device Type RRCR.
Preparing document for printing…
0%