The redundancy function of the Power Plant Manager (PPM) provides extra protection to power plant operation. Two identical PPMs (featuring integrated hybrid controllers) are installed with license activation to create a redundancy function. The devices monitor each other’s operation simultaneously, with one PPM in active control mode and the other in redundant standby mode.
If there are problems with the active controller, the redundant controller automatically and smoothly takes control of the power plant in an instant.This is followed by an automatic reboot attempt to restore the redundant operating state of the PPM. If this does not work due to a physical defect, for example, a corresponding service message is generated, which lets the PV system manager know of any defective components.
A superimposed SCADA system communicates in tandem with both PPMs, which enables the operating state of the redundant PPM system to be monitored in real time.
The SMA Redundancy Connector can be connected to a redundant PPM system to link and process digital input and output signals. This ensures the safe connection of electrical signals and allows for automatic switchover to the active control system.