PVE Series 7 Electrical Actuator................................................................................................................................................... 5
PVE Series 7 variants overview.................................................................................................................................................... 6
Safety in Systems..............................................................................................................................................................................8
PVEO
PVEO Schematics and Dimensions..........................................................................................................................................11
PVEO Variants for PVG..................................................................................................................................................................13
PVEO-HP
PVEO-HP Schematics and Dimensions...................................................................................................................................16
PVEO-HP Variants for PVG...........................................................................................................................................................18
PVEM
PVEM Schematics and Dimensions......................................................................................................................................... 20
PVEM Hysteresis and Ripple.......................................................................................................................................................22
PVEM Variants for PVG................................................................................................................................................................. 23
PVEA
PVEA Schematics and Dimensions.......................................................................................................................................... 25
PVEA Hysteresis and Ripple........................................................................................................................................................27
PVEA Variants for PVG.................................................................................................................................................................. 28
PVEH
PVEH Schematics and Dimensions.......................................................................................................................................... 30
PVEH Hysteresis and Ripple........................................................................................................................................................32
PVEH Variants for PVG.................................................................................................................................................................. 33
PVES
PVES Schematics and Dimensions...........................................................................................................................................36
PVES Hysteresis and Ripple........................................................................................................................................................ 38
PVES Variants for PVG...................................................................................................................................................................39
Standard and Fixed US 0-10 Vdc.............................................................................................................................................. 44
PWM Voltage Control..............................................................................................................................................................45
PVE Power Save.............................................................................................................................................................................. 50
Special Features
Direction Indication (-DI).............................................................................................................................................................51
Spool Position (SP).........................................................................................................................................................................54
Hysteresis and Ripple................................................................................................................................................................... 57
Current Consumption.................................................................................................................................................................. 58
Dimension Overview for PVE Series 7.....................................................................................................................................59
The analog PVE Series 7 is an electro-hydraulic actuator used to control a single work section of a PVG
proportional valve group. The PVE Series 7 actuator program includes variants with different
performance levels and features for PVG 32/100/120/128/256.
The actuator positions the main spool in a PVG work section in order to control either the flow or the
pressure of the oil distributed to/from the work function. The control signal to the actuator is an analog
voltage signal, enabling the user to operate the work function remotely by means of a joystick, a
controller or the similar.
The analog PVE Series 7 actuator program features five different main hydraulic principle variants (PVEO/
PVEM/PVEA/PVEH/PVES). The different hydraulic principles combined with the different solenoid valve
regulation principles determine whether the actuator controls the spool proportionally according to a
demand signal or ON/OFF according to a voltage signal.
The electro-hydraulic solenoid valve bridge of the actuator is available in different designs utilizing
different regulation principles, depending on performance variant. The actuator positions the main spool
by distributing pilot oil pressure to either side of it, pressurizing one side by pilot pressure while relieving
the opposite side to tank and vice versa, as illustrated below. All proportional actuators feature a closedloop spool control and continuous fault monitoring.
Danfoss | February 2021BC218286485446en-000310 | 7
PVES – proportional spool control for functions with high performance and reaction demands,
see PVES
9–32 VDC multi-voltage power supply
•
Analog voltage control signal 25-75% of supply voltage
•
DEUTSCH, AMP or DIN/Hirschman connectors
•
Standard PVE pilot oil pressure of 13.5 bar [196 psi]
•
LED indicating error state and active or passive fault monitoring
•
Variants available with Spool Position output (-SP) or 0-10 VDC control signal (-U) functionality
•
W
Technical Information
PVE Series 7 — Electro-Hydraulic Actuators
PVE Electrical Actuator
Safety in Systems
All types and brands of control valves, including proportional valves, can fail. Therefore, the necessary
protection against the serious consequences of a functional failure should always be built into the
system.
General safety considerations
For each application an assessment should be made for the consequences of the system in case of
pressure failure and uncontrolled or blocked movements.
Warning
Because the proportional valve is used in many different applications and under different operating
conditions, it is the sole responsibility of the manufacturer to ensure that all performance, safety and
warning requirements of the application is met in his selection of products and complies with relevant
machine specific and generic standards.
Control system example
An example of a control system using an aerial lift is shown below:
Aerial lift
This example breaks down the control system into smaller bits explaining the architecture in depth. Even
though many Danfoss components are used in the PVG control system.
The function of the control system is to use the output from the PVE together other external sensors to
ensure the PLUS+1 main controllers correct function of the aerial lift.
It is the responsibility of the equipment manufacturer that the control system incorporated in the
machine is declared as being in conformity with the relevant machine directives.
Caution
A mix of electrical actuation and hydraulic actuation on the same valve stack is not safe. PVE and PVH are
designed for different pilot pressure.
Cost-free repairs, as mentioned in Danfoss General Conditions of Sale, are carried out only at Danfoss or
at service shops authorized by Danfoss.
Danfoss | February 2021BC218286485446en-000310 | 9
21
0
Pp
LVDT
LED Circuit /
Microcontroller
Power
Supply
PVEO-DI
A
B
DI_B
DI_A
LED
Udc
RampRamp
SV1SV2
P109126
Technical Information
PVE Series 7 — Electro-Hydraulic Actuators
PVEO
The PVEO actuator is a non-proportional ON/OFF control actuator with open-loop spool control primarily
used to control simple ON/OFF work functions where a proportional control of speed or oil flow is not a
requirement
The PVEO is available in two different performance variants, the standard PVEO and the PVEO-R with
ramp.
PVEO
PVEO functionality
The standard PVEO functionality includes the simplest electric circuit of the PVE Series 7 actuator
program, using a fixed 12 Vdc or 24 Vdc supply voltage or signal voltage and a simple LED circuit to
control the LED light indicating Power ON/OFF.
The PVEO-DI variant includes an LVDT spool position monitor and a more advanced electric circuit with
an embedded micro-controller and separate power supply to handle the Direction Indication
functionality.
An energization of solenoid valve SV1 and a simultaneous de-energization of SV2 will cause the main
spool to move to the right direction and vice versa. If both SV1 and SV2 are energized or de-energized
simultaneously, the main spool stays locked in its neutral position.
Danfoss | February 2021BC218286485446en-000310 | 11
100
0
Spool Position [%]
Time
T0T1
T2
Spool Position
PFC (%)
Supply Voltage (UDC)
Max. spool pos. to neutral
T2
Neutral to max. spool pos.
T1
Boot-up
T0
P301823
Technical Information
PVE Series 7 — Electro-Hydraulic Actuators
PVEO
Operating Conditions
DescriptionTypeValue
Pilot PressureNominal13.5 bar[196 psi]
Oil ConsumptionNeutral0.0 l/min[0.0 gal/min]
Max T-port pressureStatic25 bar[365 psi]
Max T-port pressureIntermittent40 bar[580 psi]
Storage TemperatureAmbient-50 to +90°C[-58 to +194°F]
Operating TemperatureAmbient-40 to +90°C[-40 to +194°F]
Oil ViscosityOperating range12 to 75 cSt[65 to 347 SUS]
Oil CleanlinessMaximum18/16/13 (according to ISO 4406)
The PVEO-HP actuator is a non-proportional ON/OFF control actuator with open-loop spool control
primarily used to control simple ON/OFF work functions where a proportional control of speed or oil flow
is not a requirement.
PVEO-HP
All variants are available with following features:
Neutral position or max. spool stroke according to control signal
•
12 VDC or 24 VDC supply voltage
•
DEUTSCH, AMP or DIN/Hirschman connectors
•
PVH/PVHC pilot oil pressure of 25 bar [362.6 psi]
•
LED only indicating Power ON or Power OFF
•
PVEO-HP functionality diagram
The standard PVEO/PVEO-HP functionality includes the simplest electric circuit of the PVE actuator
program, using a fixed 12 VDC or 24 VDC supply voltage or signal voltage and a simple LED circuit to
control the LED light indicating Power ON/OFF.
An energization of solenoid valve SV1 and a simultaneous de-energization of SV2 will cause the main
spool to move to the right direction and vice versa. If both SV1 and SV2 are energized or de-energized
simultaneously, the main spool stays locked in its neutral position.
The PVEM actuator is a proportional control actuator with closed-loop spool control primarily used to
control work functions with medium performance requirements. The PVEM is available in three different
performance variants, the standard PVEM, the PVEM-R with ramp and the PVEM-Q with quick reaction.
PVEM
Variants are available with following features:
11-32 VDC milti-voltage power supply
•
Analog voltage control signal 25–75% of supply voltage
•
DIN/Hirschman connectors
•
Standard PVE pilot oil pressure of 13.5 bar [196 psi]
•
LED indicating error state and passive fault monitoring
•
Float (-F), quick Ramp (-R) or Quick reaction functionality (-Q)
•
PVEM functionality
The PVE functionality includes an electric circuit with a closed-loop logic. An embedded micro-controller
processes the signal voltage and the LVDT feedback signal and regulates the solenoid valves accordingly.
An energization of solenoid valve SV1 and a simultaneous de-energization of SV2 will cause the main
spool to move to the right direction and vice versa. If both SV1 and SV2 are energized or de-energized
simultaneously, the main spool stays locked in its neutral position.