Multi-stage fuse concept

Energy storage units based on double-layer capacitor technology can have high internal resistances. At low voltage, a short-circuit current that occurs may consequently not be large enough to trigger the corresponding fuse in the supply line. Therefore, a smaller fuse is switched on or off if necessary. The software module takes over this control automatically. If xCurrentLimitActive is set to "TRUE", the current supplied by the device (MDP92A, MDE90A) is automatically limited to 80% of the nominal value of the smaller fuse.

INFORMATION

The limitation of the current by the function must be considered in the application. If current limiting is active, there should be no travel operation.

INFORMATION

If fuse protection is active and the type of fuse protection is set to "multi-stage fuse concept" (MultipleFuseControl), the digital input DI 01 and the digital output DO 01 in MDP92A/MDE90A are preset for controlling the multi-stage fuse circuit. As such, they cannot be used by the structures Inverter.IN and Inverter.OUT.