Description
The GUARDIAN AUTO has been designed to operate connected to submerged and surface electric pumps, but it may be used with any asynchronous electric motor. A wide range of electric pumps may be managed with just one version. The rated current is calibrated by programming via the keys on the front of the panel. In the event of phase failure, overload or overvoltage, the system disconnects the motor [OVERLOAD], after a time which simulates the tripping of a thermal overload cut-out.
The dry running protection does not require sensors (source of errors and extra costs), but functions by checking the COScp (power factor) value absorbed by the motor.
The system may be connected to external automated systems such as pressure switches, floats, alarm signals, timers, computers, etc. through an electrically clean (not live) NC contact connected to the SW terminals on the main terminal board.
