Control device for electro-actuators with protection against short-circuits to ground or to the supply of the terminals of the electro-actuators
DRIVE
May 25, 2005
A control device (2) for an electro-actuator (3) comprising a first and a second input terminal (4, 5) connected to an electrical energy source (6); a first and a second output terminal (10, 11) connected to the electro-actuator (3); and selectively controlled switches (16, 17, 18) which can be activated in order to connect the first and second output terminals (10, 11) to the first and second input terminals (4, 5) in predetermined operative conditions; the controlled switches (17, 18) comprise first controlled switches (17) which are connected between the first input terminal (4) and the first output terminal (10) and second controlled switches (18) which are connected between the second input terminal (5) and the second output terminal (11); the control device (2) additionally comprises first sensors (31) which are connected to the ends of the first controlled switches (17) and provide a first signal (VHS) which is indicative of the current flowing in the first controlled switches (17)
Discussion in the ATmosphere