REXROTH R901220113 3DREME 10 P-7X/200YG24K31A1V Solenoid Proportional Valve R901231067 3DREME16P-7X/200YG24K31A1V

The electronics is supplied with voltage via connections A and B. The command value is applied to differential amplifier connections D and E. The characteristic curve generator adapts the command value/solenoid current characteristic curve to the valve so that non-linearities in the hydraulics are compensated for and a linear command value/pressure characteristic curve is obtained. The current regulator regulates the solenoid current independently of the solenoid coil resistance

A chopper amplifier with a clock frequency of approx. 180 Hz to 400 Hz forms the power stage of the electronics for activating the proportional solenoid. The output signal is pulsewidth-modulated (PWM). For checking the solenoid current, a voltage can be measured between Pin F(+) and Pin C(–), which is proportional to the solenoid current. 1 mV corresponds to a solenoid current of 1 mA