Moog E0-LVDT Series Microvalves With Spool Position Feedback
2
Ashchurch, Tewkesbury, Glos. GL20 8NA Tel: (01684) 296600 Fax: (01684) 278410 Moog Controls Limited Registered Office Ashchurch, Tewkesbury, Glos. GL20 8NA Tel: 01684 296600 Registered No 1171948 PDS-72-FAX Series 50 Valve with Spool position Feedback Description This special version of the MOOG E050 series motorsport servovalve incorporates an integral L.V.D.T. position sensor. The L.V.D.T. (Linear Variable Differential Transformer) allows the valve spool position to be continuously monitored during normal operation. Typical applications for this valve include high- resolution control systems and servovalve condition monitoring for safety critical systems (see below). Design Features Standard series 30 port pattern Small size and weight, for motorsport applications Rugged construction suitable for motorsport applications Integral spool position sensor L.V.D.T. sensor is non-contacting giving extended life Single flying lead incorporates connections for both the valve drive signal and spool position sensor. Typical Applications Valve configured as high-resolution control valve N.B. Using a high gain electronic controller in the above configuration allows very high valve resolution (typically 0.2%) and minimal null drift Valve condition monitoring N.B. Monitoring the difference between demand and actual spool position can sense a spool position error in less than 2mS. Valve drive Comparator +/- 10V +/- 10mA Valve drive signal SPOOL POSITION Valve OK LVDT T Closed loop control Amp (High gain) Valve command signal Feedback Servovalve LVDT
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Transcript of Moog E0-LVDT Series Microvalves With Spool Position Feedback
Ashchurch, Tewkesbury, Glos. GL20 8NA Tel: (01684) 296600 Fax: (01684) 278410 Moog Controls Limited
Registered Office Ashchurch, Tewkesbury, Glos. GL20 8NA Tel: 01684 296600 Registered No 1171948 PDS-72-FAX
Series 50 Valve with Spoolposition Feedback
Description
This special version of the MOOG E050 seriesmotorsport servovalve incorporates an integralL.V.D.T. position sensor. The L.V.D.T. (LinearVariable Differential Transformer) allows the valvespool position to be continuously monitored duringnormal operation.
Typical applications for this valve include high-resolution control systems and servovalvecondition monitoring for safety critical systems(see below).
Design Features⇒ Standard series 30 port pattern⇒ Small size and weight, for motorsport
applications⇒ Rugged construction suitable for motorsport
applications⇒ Integral spool position sensor
⇒ L.V.D.T. sensor is non-contacting givingextended life
⇒ Single flying lead incorporates connections forboth the valve drive signal and spool positionsensor.
Typical Applications
Valve configured as high-resolution control valve
N.B. Using a high gain electronic controller in theabove configuration allows very high valveresolution (typically 0.2%) and minimal null drift
Valve condition monitoring
N.B. Monitoring the difference between demandand actual spool position can sense a spoolposition error in less than 2mS.
Valvedrive
Comparator
+/- 10V
+/- 10mAValvedrivesignal
SPOOLPOSITIONValve OK
LVDTT
Closed loopcontrol Amp(High gain)
Valvecommandsignal
FeedbackServovalve
LVDT
Ashchurch, Tewkesbury, Glos. GL20 8NA Tel: (01684) 296600 Fax: (01684) 278410 Moog Controls Limited
Registered Office Ashchurch, Tewkesbury, Glos. GL20 8NA Tel: 01684 296600 Registered No 1171948 PDS-72-FAX
SpecificationsRated flow at 70 bar 5.0 lpmMax. Supply pressure 210 barRated Current
Series coils 5 mAParallel coils 10 mA
Resistance per coil 900-1100 Ω ± 10%Inductance per coil 0.25 HNull Leakage at 70 bar <0.7 lpmOperating temperature -20oC to + 135oCMass of valve + Cable 0.245 kg
Performance *Threshold <0.5%Hysteresis <3.0%Linearity < ± 7%Symmetry < ± 5%Null Bias < 2.0%Frequency response
90o phase lag >150 Hz
*. Performance quoted using internal mechanicalfeedback spool position system.
Installation Details
SHIELDED
YELLOW(G)
BLACK(F)
BLUE(D)
GREEN( C )
BROWN(E)
RED(B)
LVDT SERVOVALVE
30.0 MAX 42.0 MAX
480.0/490.0 LEADWIRE LENGTH
28.3
7
19.2 MAX
65.5 MAX
39.5
MA
X
CONTROLPORT C1
RETURNPORT R
CONTROLPORT C2
PRESSUREPORT P
NOTE: ALL DIMENSIONS IN MM
