... functions of Time Period Control and PID adjusting. The running mode has single-pump mode, fixed mode of 1 ... Start/Stop ControlTerminal control, keypad control or PC/PLC control.Running Command Channels3 kinds of channels from keypad panel, control ... -voltage, over-current, AC drives over-load, motor over-load, over-heat, motor detection fault, external equipment fault, external disturbance, water ...