Danfoss PVE Series 4 Technical Information

Also see for PVE 4 Series: Installation guide

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Danfoss PVE Series 4 Technical Information Manual pdf 17 page image

Spool position feedback (-SP)Spool travelSpool travel0.5V7 mm100%B port7 mm100%A port0 mmNeutral2.5V4.5VUspUsUsUsUspUsp25% UDC50% UDC75% UDCDirection indication feedback (-DI)PVE with build in indication for spool movement direction are available.The PVE–DI has dual power supply. UDC1 only supplies solenoid valves. UDC2 supplies electronics and feedback. The PVE does not work without UDC2. DI-A and DI-B are relative standard mounting. The inputsignal fault monitoring is disabled if UDC1 is disabled. DI-A and DI-B are relative standard mounting.The DI has two direction feeedback signals with output high (close to UDC) when the spool is in neutralposition. If the spool moves out of neutral position, the direction signal switches to low (< 0.2 V). One ofthe signals goes low by spool ~0,8 mm out of neutral and high by spool within 0,4 mm out of neutral.Both direction indication signals go low when the error indicator goes high.Direction indication feedbackDI-A lowDI-B highDI-A highDI-B lowSpool position ‘x’mm [in]B-portPVBS away from PVEA-portPVBS towards PVE0.4 0.8-0.8 -0.4 0As shown in the figure, both “DI-A” and “DI-B” signals are “High” when the spool is in neutral position.When the spool is moving in the A direction, the “DI-A” signal goes “Low” and the “DI-B” signal stays“High”. The reverse is true when the spool is moved in the B direction.Values for both Direction Indicators, pin A and pin BTransition to low from high 0.8 ± 1 mm [0.031 in]Transition to high from low 0.4 ± 1 mm [0.015 in]Transition to low both pins error pin goes highMaximum load of “DI-A” , “DI-B” 50 mAVoltage DI high by load 20 mA > UDC – 1.5 VVoltage DI high by load 50 mA > UDC – 2.0 VVoltage DI low < 0.2 VTechnical Information PVE, Series 4 for PVG 32/100/120 and PVHCSafety and monitoring520L0553 • Rev GD • Jan 2014 17