Unic URW295CR - Acceleration Cylinder Function

Piston
Tobeconnectedtotank
Ifnocurrentflowsthrough
thecoil,spoolispushedup
sothatpilotpressurewill
notbeappliedtocylinder
forextension.
Core
Coil
spool
spuping3
Spring1
spring2
Differentialtransformer
Pailotpressure
（１０−８）
10.8Descriptionofaccelerationcylinderfunction
Whencontrollingthroughtheradioremotecontroller,electric
currentproportionaltothemovementofspeedcontrolleverflows
fromthecontrolboxtothecylindercoilsothattheironcoreis
graduallymagnetizedaccordingly.
Theironcoreandthespoolfacingeachotherwiththespring
1placedthemmovedownwardtoleadthepilot
pressuretothepistonforextension.
Thecylinderextendstothepositionwheretheworkingforce
ofcylinderforextensioncontrolledbymovementof
spoolandtheforceofspring3arebalanced.
Thepositionbeingbalancedis
detectedbythedifferentialtransformer
toprovidefeedbacktothecontrol
boxwhichinturnsendsnextcommand
totheproportionalsolenoid.
3.0MPa(30kgf/cm )
2
Internalpressurechangesfrom
0(zero)to30㎏f/c㎡accordingto
extentofopeningofthespool.