Industrial hydraulic motors Technical Information Series V12 EO two-position control

The EO is a two-position control, where max and min dis-placements are governed by a DC solenoid attached to the control cover (refer to the installation drawing on page 27).The EO control is utilized in transmissions where onlytwo operating modes are required: Low speed/high torque or high speed/low torque.The servo piston, normally in the max displacementposition, shifts to the min displacement position when the solenoid is activated. Intermediate displacements cannot be obtained with this control.Servo pressure is supplied internally (through the shuttlevalve from one of the main high pressure ports) or exter- nally (port X4).The solenoid is either 12 or 24 VDC, requiring 1.2 and0.6 A respectively. An industrial electrical connector is included (DIN 43650/IP54).The EO two-position control is available in four versions:
Displacement(setting piston position) SolenoidcurrentI Max EOH 01 I -Internal servo supply, 24 VDC EOL 01 I -Internal servo supply, 12 VDC

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EOH 01 E -External servo supply, 24 VDC(optional) EOL 01 E -External servo supply, 12 VDC(optional)Gauge ports (EO control):X1Setting piston pressure (max-to-min) X2Servo supply pressure (after orifice) X4Servo supply pressure (before orifice) X6Setting piston pressure (min-to-max)Ports are:–M14x1.5 (ISO and cartridge versions) –
Min X4X2 s Thresholdcurrent EO diagram. EO H 01 I schematic (non-activated solenoid).
X4X2 A MaxMin X6X1 B A 9 /
16 "-18 O-ring boss (SAE version).
MaxMin X6X1 B EO H 01 E schematic (non-activated solenoid). 23
Parker Hannifin Mobile Controls DivisionTrollhättan, Sweden