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Farmer 400
Fav 700
Fav 900
Power lift / EPC electrohydraulic power lift control
Control valve EHR 23 - LS
A
General
Fav 900 chassis number 23/3001 and up
19.04.2001
8610
000011
A
a
1/2
Capitel
Docu-No.
Index
Date
Version
Page
Control valve EHR 23 - LS
Text-module
Control valve EHR 23 - LS, functional description
PM-Picturemodule
Text-module
The valve has been designed in disc mode so that it can be incorporated in series SB 23 LS directional
control valve units.
The control valve is the actuating element in the closed-loop control circuit and therefore the link
between the hydraulics and electrics/electronics.
It consists of one main valve and two flange-mounted proportional magnets.
The control valve has 3 switching statuses which are assigned to the functions "Neutral", "Lift" and
"Lower". The control valve's proportional magnets ensure that the coil current is transformed into a
proportional oil flow, thereby generating a lifting or lowering speed which is proportional to the system
deviation.
PM-Picturemodule
Text-module
Text-module
PMTAB_Picture
Control valve EHR 23 - LS
PMTAB_Picture
Control valve EHR 23 - LS (hydr. circuit diagram)
1
3-way pressure governor
A
To hydraulic cylinder
2
3/2 proportional directional control valve,
"Lift"
R
To return flow
3
Proportional throttle valve, "Lower"
P
From variable-displacement pump PR
4
Non-return valve
Y
Control connection for
variable-displacement pump (LS line)
5
Secondary pressure-relief valve
6
"LS pressure" shuttle valve