The EDM-M* card is a digital ampliﬁer for open loop proportional valves
control. It is designed for rail mounting type: DIN EN 50022.
The unit supplies a variable current in proportion to the reference signal
and independently of temperature variations or load impedance.
The PWM stage on the solenoid power supply allows the reduction of
the valve hysteresis, thus optimising control precision. The unit is
available in three main versions, to control single solenoid valves (M1),
double solenoid valves (M2) and valves with two independent channels
controlling two single solenoid valves (M3). Each version is available
with different maximum current settings and switching frequencies
(PWM), optimised according to the relevant valve.
The parameters adjustment is carried out either through keyboard and
display, placed on the front panel, or with a notebook, via RS232 or via
USB converter (EDMPC/20 software).