PVG 32 Proportional Valves Technical Information

PVG 32 Proportional Valve
Technical Information
Electrical actuation
PVEO,
ON-OFF
Main features of PVEO:
• Compact
• Robust operation
• Simple build-up
PROPORTIONAL
ACTUATION
With electrical proportional actuation the main spool position is adjusted so that it
corresponds to an electric signal – from a remote control unit, for example.
The signal (set-point signal) is converted into a hydraulic pressure which moves the main
spool. The position of the main spool is converted in the positional transducer (C) to
an electric signal (feed-back signal). This signal is registered by the electronics.
The variation between the set-point signal and feed-back signal actuates the solenoid
valves. The solenoid valves are actuated so that hydraulic pressure moves the main spool
into the correct position.
PVEM,
PROPORTIONAL MEDIUM
PVEM versions are recommended where
there is a requirement for simple proportional
control and where reaction and
hysteresis are not critical. Main features
of PVEM:
• ON-OFF modulated
• Inductive transducer, see page 17
• Medium hysteresis
PVEH,
PROPORTIONAL HIGH
PVEH versions are recommended where
among the requirements are fault
monitoring, fast system reaction, low
hysteresis and fine regulation.
Main features of PVEH:
• Inductive transducer, see page 17
• Integrated pulse width modulation,
see page 17
• Short reaction time
• Low hysteresis
• Fault monitoring, see page 17 and 18
Transistor output for signal source,
see page 19
16 520L0344