The frequency conversion velocity modulation control cabinet selects the international name brand, realizes from zero to the rated speed stepless acceleration, to the electrical network, the pipe network does not have the impact, greatly lengthened the useful life of equipment to select the international name brand programmable controller, the control sequencing is the traditional start control turns to a new generation the product Applicable scope each kind of water pump, alternating current machine smooth starting and control control three phase ac induction type electrical machinery stepless acceleration Technical parameter control mode: Does not limit the starting way: electrical machinery power: <= 315kW control quantity: 1 - 5