FR200H series special purpose inverters for multi-pump constant voltage watersupply, are developed for multi-pump constant voltage watersupply, based on the core control arithmetic of FR200 vector control inverters, combined with the control requirements of multi-pump constant voltage watersupply application, mached with EXC-RC expansion card.
Featured with the multi-pump watersupply and watertreatment function of living district and municipal engineering, which can achieve the flexible setting of industry-frequency pump, veriable frequency pump, dormancy pump and unloading pump, and auto-control switch according to the system status, also achieve timing constant voltage watersupply, dormancy control, unloading control, timing turn-switch control, featured with perfect tank liquid level, tube pressure detection and protection.