Solenoid valve and system for dust filter units Buschjost Norgren
Actuating solenoid with built-in electronic timer. Two potentiometers
and two slide switches in the terminal box allow flexible adjustment
of pulse and interval duration. When the power is switched on, there
is a delay of about 1.5s before the valve is opened for a preset pulse
duration.
This is followed by a break (Pause). The durations involved are
generated by a microcontroller.
The power supply may be interrupted to carry out an operating test
without waiting for the break. The (N) terminal can be used to
operate the built-in solenoid independently of the cycle set, or to
operate an external "reference solenoid" in parallel with the internal
coil.
The 110/120V version's solenoid coil is operated by means of an
integral bridge rectifier. In this case external solenoids can only be
supplied with power using an additional rectifier.
