Danfoss ECO 80 User guide

Technical Information

Directional Control Valve

ECO 80

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Technical Information

ECO 80 Directional Control Valve

Revision history Table of revisions

Date Changed Rev

September 2020 Document entirely re-worked - new version of document 0301

February 2020 Updated document number to match online reference 0201

August 2019 Updated code numbers for EVO end plates 0103

March 2017 Updated schematic 0102

October 2016 First edition 0101

2 | © Danfoss | September 2020 BC199786485316en-000301

Technical Information

ECO 80 Directional Control Valve

General information

General description......................................................................................................................................................................... 5

ECO modules......................................................................................................................................................................................5

Safety in systems...............................................................................................................................................................................5

ECO 80 LS sectional view............................................................................................................................................................... 6

Mechanical acting ECO 80

ECO 80 mechanical modules overview.................................................................................................................................... 8

EVP inlet modules - mechanical acting

Open center EVP.............................................................................................................................................................................10

Closed center EVP.......................................................................................................................................................................... 12

EVB basic modules - mechanical acting

EVB low body...................................................................................................................................................................................15

EVB medium body......................................................................................................................................................................... 16

EVB basic modules accessories

PVLP shock/anti-cavitation valve............................................................................................................................................. 18

PVLA suction valve and cavity plug.........................................................................................................................................20

EVBS mechanical flow control spools

EVBS fluid flow characteristics - Theoretical performance..............................................................................................22

EVBS - female extension.............................................................................................................................................................. 24

EVBS - female extension and through acting...................................................................................................................... 25

EVBS - female extension and Detent 03 and 02 position spool out or in..................................................................26

EVBS - female extension and Micro Switch...........................................................................................................................27

ECO 80 mechanical - actuation

EVOS - open spool through action.......................................................................................................................................... 29

EVOS - open spool mechanical actuation............................................................................................................................. 31

EVME - open spool centering.................................................................................................................................................... 33

EVME - micro switch NO.............................................................................................................................................................. 35

EVOS x EVME combination overview......................................................................................................................................36

EVO - end plate

EVO......................................................................................................................................................................................................37

EVO with LX-connection..............................................................................................................................................................37

Electrical actuated ECO 80

ECO 80 electrical modules overview.......................................................................................................................................39

EVP inlet modules - electrical

Open center EVP with PPRV....................................................................................................................................................... 41

Closed center EVP with PPRV.....................................................................................................................................................44

EVP inlet module accessories

EVPX electrical LS pressure unloading valve........................................................................................................................46

Plug for external pilot oil supply.............................................................................................................................................. 47

EVB basic modules - electrical actuation

EVB low body...................................................................................................................................................................................49

EVB medium body......................................................................................................................................................................... 50

EVB basic modules accessories

PVLP shock/anti-cavitation valve............................................................................................................................................. 51

PVLA suction valve and cavity plug.........................................................................................................................................52

EVBS electrical flow control spools

EVBS fluid flow characteristics - Theoretical performance..............................................................................................54

EVBS - electrical flow control spool......................................................................................................................................... 55

EVBS - electrical flow control spool with soft spring for EVHCO...................................................................................56

EVBS - EVPN spool..........................................................................................................................................................................56

ECO 80 electrical - actuation

EVM mechanical actuation.........................................................................................................................................................57

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Technical Information

ECO 80 Directional Control Valve

Contents

EVM without adjustment screws........................................................................................................................................ 57

EVM with adjustment screws............................................................................................................................................... 57

EVM dimensions, torque, and part numbers..................................................................................................................57

EVC - cover for mechanical actuation.....................................................................................................................................59

EVH - hydraulic actuation............................................................................................................................................................60

EVHC - electrical actuation..........................................................................................................................................................61

EVHCO - Low current on/off electrical actuation................................................................................................................63

EVPN - pneumatic actuation......................................................................................................................................................64

EVPN - electrical pneumatic action..........................................................................................................................................65

EVO - end plate

EVO with pneumatic port............................................................................................................................................................68

EVT - assembly kit for both mechanical and electrical acting ECO 80 dimension overview

4 | © Danfoss | September 2020 BC199786485316en-000301

Technical Information

ECO 80 Directional Control Valve

General information

General description

The ECO 80 LS is a hydraulic load sensing proportional valve group designed to give maximum flexibility in design and build concept. The ECO 80 LS is designed as a load sensing directional control valve which will lead to increased machine performance, higher efficiency, reduced cooling requirements and fuel saving compared to conventional directional control valves.

ECO 80 LS features

PVG load-sensing proportional valves features and benefits summarized inb bullets below:

•

Load sensing directional control:

Proportional control of oil flow to a work function

‒

•

Modular build concept:

Up to 12 basic modules per ECO 80 LS valve group

‒

Different, interchangeable spool variants

‒

System pressure up to 280 bar

‒

Work port pressure up to 320 bar

‒

Compact design and installation

‒

ECO modules

EVP, pump side modules

•

Built-in pressure relief valve

•

Pressure gauge connection

•

Versions:

Open center version for systems with fixed displacement pumps

‒

Closed center version for systems with variable displacement pumps

‒

Integrated 25 bar pilot oil supply for hydraulic and electrohydraulic actuaqtion

‒

Versions prepared for electrical LS unloading valve

‒

EVB, basic modules

•

Interchangeable spools

•

Load holding check valve in channel P

•

Option for shock and suction valves for port A and B

Actuation modules

The basic module could be fitted with three main different actuation modules:

•

Mechanical

•

Electrical

•

Hydraulic

•

Pneumatic

Safety in systems

All makes and all types of control valves (incl. proportional valves) can fail, thus the necessary protection against the serious consequences of function failure should always be built into the system. For each application an assessment should be made for the consequences of pressure failure and uncontrolled or blocked movements.

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Technical Information

ECO 80 Directional Control Valve

General information

Warning

All makes/brands and types of directional control valves – inclusive proportional valves – can fail and cause serious damage. It is therefore important to analyze all aspects of the application.

Because the proportional valves are used in many different operation conditions and applications, the manufacturer of the application is alone responsible for making the final selection of the products – and assuring that all performance, safety and warning requirements of the application are met.

The process of choosing the control system – and safety levels – is governed by the machine directives EN 13849 (Safety related requirements for control systems).

ECO 80 LS sectional view

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Technical Information

ECO 80 Directional Control Valve

General information

1 Work Section (EVB)

2 Spool (EVBS)

3 Check valve

4 Open spool centering (EVME)

5 Mechanical actuator (EVOS)

6 Inlet module (EVP)

7 Load sense relief valve

8 Unloader spool

9 Uloader spool spring

10 Mechanical actuator (EVM)

11 Electrical actuator (EVHC)

12 Shock valve (PVLP)

13 Shuttle disc

Option moutn only possible with EVOS/EVME configuration

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Technical Information

ECO 80 Directional Control Valve

Mechanical acting ECO 80

This section will only be about the mechanical acting modules of the ECO 80 portfolio. For information on the electrical actuated modules of the ECO80 portfolio, see Electrical actuated ECO 80 on page 39.

ECO 80 mechanical modules overview

8 | © Danfoss | September 2020 BC199786485316en-000301

[3.86]

[3.86] 98

[2.10]

53,4

[4.90]

124,5

[0.17]

4,3

Technical Information

ECO 80 Directional Control Valve

EVP inlet modules - mechanical acting

The ECO 80 EVP inlet modules, also referred to as pump side modules, act as an interface between the ECO 80 directional valve group and the hydraulic pump and tank reservoir.

EVP Inlet module EVP Inlet module dimensions

Fixed displacement pump symbol Variable displacement pump symbol

The EVP inlet module variants are based on a generic platform with a selection of additional features, enabling you to tailor the EVP to suit the demands of any hydraulic system:

•

Open center EVP (for fixed displacement pumps)

•

Closed center EVP (for variable displacement pumps)

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Technical Information

ECO 80 Directional Control Valve

EVP inlet modules - mechanical acting

Open center EVP

The basic Open Center EVP inlet module is intended for use with fixed displacement pumps in applications, where a valve group with mechanically controlled work sections is desired.

The Open Center EVP features:

•

Integrated LS pressure relief valve

•

Threaded ports for P/T/LS and M measuring gauge

Open center EVP schematic

Technical specification for EVP

Max. P-port continuous Max. T-port static/dynamic Max. rated flow

280 bar [4061 psi] 25/40 bar [365/580 psi] 100 l/min [26.4 US gal/min]

Technical specification

Parameter Minimum Recommended range Maximum Fluid temperature Fluid viscosity Fluid cleanliness Operating temperature

-30°C [-22°F] 30 to 60°C [86 to 140°F] 90°C [194°F]

4 mm2/s [39 SUS] 12 to 75 mm2/s [65 to 347 SUS] 460 mm2/s [2128 SUS]

23/19/16 (according to ISO 4406)

Ambient: -30 to 60°C [-22 to 140°F]

10 | © Danfoss | September 2020 BC199786485316en-000301

20 40 60 80

[l/min]

[US gal/min]

4 8 12 16 20

300

250

200

150

100

4000

3000

2000

1000

[psi] [bar]

10 30 50 70

50 bar 100 bar 150 bar 200 bar 250 bar

280 bar

90 100

Curves to inlet pressure x flow

20 40 60 80

[l/min]

[US gal/min]

4 8 12 16 20

Δ PΔ P

240

160

[psi] [bar]

100

320

Neutral flow pressure in EVP open center inlet

Technical Information

ECO 80 Directional Control Valve

EVP inlet modules - mechanical acting

Theoretical performance graphs

Pressure relief valve characteristics

Neutral by-pass pressure drop characteristics (open center)

Part numbers for Open Center EVP

Part numbers P-port T-port M-, LS-port Mounting 11173005 11172981

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G 1/2 G 1/2 G 1/4 M8 x 1.25

7/8-14 UNF 7/8-14 UNF 9/16-18 UNF M8 x 1.25

Technical Information

ECO 80 Directional Control Valve

EVP inlet modules - mechanical acting

Closed center EVP

The basic Closed Center EVP inlet is intended for use with variable displacement pumps in applications where a valve group with mechanically controlled work sections is desired.

The Closed Center EVP features:

•

Integrated LS pressure relief valve

•

Threaded ports for P/T/LS and M measuring gauge

Closed center EVP schematic

Technical specification for EVP

Max. P-port continuous Max. T-port static/dynamic Max. rated flow

280 bar [4061 psi] 25/40 bar [365/580 psi] 100 l/min [26.4 US gal/min]

Technical specification

Parameter Minimum Recommended range Maximum Fluid temperature Fluid viscosity Fluid cleanliness Operating temperature

-30°C [-22°F] 30 to 60°C [86 to 140°F] 90°C [194°F]

4 mm2/s [39 SUS] 12 to 75 mm2/s [65 to 347 SUS] 460 mm2/s [2128 SUS]

23/19/16 (according to ISO 4406)

Ambient: -30 to 60°C [-22 to 140°F]

12 | © Danfoss | September 2020 BC199786485316en-000301

20 40 60 80

[l/min]

[US gal/min]

4 8 12 16 20

300

250

200

150

100

4000

3000

2000

1000

[psi] [bar]

10 30 50 70

50 bar 100 bar 150 bar 200 bar 250 bar

280 bar

90 100

Curves to inlet pressure x flow

Technical Information

ECO 80 Directional Control Valve

EVP inlet modules - mechanical acting

Theoretical performance graphs

Pressure relief valve characteristics

Part numbers for Mechanical Acting Closed Center EVP

Part numbers P-port T-port M-, LS-port Mounting 11173006 11173002

G 1/2 G 1/2 G 1/4 M8 x 1.25

7/8-14 UNF 7/8-14 UNF 9/16-18 UNF M8 x 1.25

Danfoss | September 2020 BC199786485316en-000301 | 13

[2.70]68.5

[1.70]43

[0.35]9

[1.57]40

[1.38]35

[0.79]

[0.20]5

[0.19]4.8

[4.80]122

[3.58]91

[1.08]

27.5

[0.31]

[3.72]94.5

[4.49]114

[0.19]4.7

[3.07]78

[1.69]43

[2.70]68.5

[0.35]9

[1.57]40

[1.38]35

[0.79]

[0.20]5

[2.42]61.5

[4.49]114

[0.31]8

[3.72]94.5

[1.08]27.5

[0.28]7

Technical Information

ECO 80 Directional Control Valve

EVB basic modules - mechanical acting

The ECO 80 EVB basic modules, also referred to as work sections, are the interface between the ECO 80 directional control valve and the work function such as a cylinder or a motor. The EVB comes in two main variants – a low body and a medium body with shock/anti-cavitation valve facility (PVLP)

EVB low basic module EVB low basic module dimensions

EVB medium basic module EVB medium basic module dimensions

The EVB basic module variants are based on a generic platform with a selection of additional features, enabling you to tailor the EVB to suit the demands of any hydraulic system:

•

EVB low body

•

EVB medium body

14 | © Danfoss | September 2020 BC199786485316en-000301

Technical Information

ECO 80 Directional Control Valve

EVB basic modules - mechanical acting

EVB low body

The EVB low body is intended for controlling a work function where the function behavior in terms of flow and pressures allows dependency on the load pressure of other functions used simultaneously. The integrated load drop check valve prevents flow back from work ports influencing other functions.

The EVB low body features:

•

Integrated LS shuttle network

•

Load drop check valve

Schematic

Technical specification for A/B-port

Max. continuous pressure Max. intermittent pressure Max. rated flow

280 bar [4061 psi] 320 bar [4641 psi] 100 l/min [26.4 US gal/min]

Technical specification

Parameter Minimum Recommended range Maximum Fluid temperature Fluid viscosity Fluid cleanliness Operating temperature

-30°C [-22°F] 30 to 60°C [86 to 140°F] 90°C [194°F]

4 mm2/s [39 SUS] 12 to 75 mm2/s [65 to 347 SUS] 460 mm2/s [2128 SUS]

23/19/16 (according to ISO 4406)

Ambient: -30 to 60°C [-22 to 140°F]

Part numbers

Part numbers A/B-port 11168505 11168504

G 1/2

7/8-14 UNF

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Technical Information

ECO 80 Directional Control Valve

EVB basic modules - mechanical acting

EVB medium body

The EVB medium body features:

•

Integrated LS shuttle network

•

Load drop check valve

•

Shock/anti-cavitation valve and suction facility (PVLP/PVLA)

Schematic

Technical specification for A/B-port

Max. continuous pressure Max. intermittent pressure Max. rated flow

280 bar [4061 psi] 320 bar [4641 psi] 100 l/min [26.4 US gal/min]

Technical specification

Parameter Minimum Recommended range Maximum Fluid temperature Fluid viscosity Fluid cleanliness Operating temperature

-30°C [-22°F] 30 to 60°C [86 to 140°F] 90°C [194°F]

4 mm2/s [39 SUS] 12 to 75 mm2/s [65 to 347 SUS] 460 mm2/s [2128 SUS]

23/19/16 (according to ISO 4406)

Ambient: -30 to 60°C [-22 to 140°F]

Part numbers

Part number A/B-port 11168503 11168502

G 1/2

7/8-14 UNF

Technical Information

ECO 80 Directional Control Valve

EVB basic modules accessories

The generic EVB module accessory platform include the PVLP shock and anti-cavitation valve and PVLA suction valve.

•

PVLP Shock and Anti-cavitation valve

•

PVLA Suction valve

•

Cavity plug

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Port pressure

Technical Information

ECO 80 Directional Control Valve

EVB basic modules accessories

PVLP shock/anti-cavitation valve

The PVLP will relief a pressure peak to the internal tank galleries and will furthermore suck oil from the tank to the work port to prevent cavitation. Pressure settings range 32-320 bar [460-4641 psi].

Features:

•

Shock valve

•

Anti-cavitation

•

Lifetime of 200,000 actuations

•

Optional fixed or adjustable

PVLP schematic

Technical specification

Parameter Minimum Recommended range Maximum Fluid temperature Fluid viscosity Fluid cleanliness Operating temperature

-30°C [-22°F] 30 to 60°C [86 to 140°F] 90°C [194°F]

4 mm2/s [39 SUS] 12 to 75 mm2/s [65 to 347 SUS] 460 mm2/s [2128 SUS]

23/19/16 (according to ISO 4406)

Ambient: -30 to 60°C [-22 to 140°F]

Part numbers for fixed PVLP

Part number Pressure setting in bar [psi]

157B2032 32 [460] 157B2050 50 [725] 157B2063 63 [914] 157B2080 80 [1160] 157B2100 100 [1450] 157B2125 125 [1813] 157B2140 140 [2031] 157B2150 150 [2175] 157B2160 160 [2320] 157B2175 175 [2538] 157B2190 190 [2755] 157B2210 210 [3045] 157B2230 230 [3335] 157B2240 240 [3480] 157B2250 250 [3625] 157B2265 265 [3845] 157B2280 280 [4061] 157B2300 300 [4351] 157B2320 320 [4641]

Technical Information

ECO 80 Directional Control Valve

EVB basic modules accessories

Part numbers for adjustable PVLP

Part number Pressure setting in bar [psi]

11006594 121-250 [1755-3626] 11006595 251-285 [3640-4134]

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Port pressure

Technical Information

ECO 80 Directional Control Valve

EVB basic modules accessories

PVLA suction valve and cavity plug

The PVLA will suck oil from the tank to the work port to prevent cavitation by the 0.5 bar spring. The plug will ensure that when using a single acting spool, all flow returning through the work port is led to tank.

PVLA schematic

Cavity plug schematic

Technical specification

Parameter Minimum Recommended range Maximum Fluid temperature Fluid viscosity Fluid cleanliness Operating temperature

-30°C [-22°F] 30 to 60°C [86 to 140°F] 90°C [194°F]

4 mm2/s [39 SUS] 12 to 75 mm2/s [65 to 347 SUS] 460 mm2/s [2128 SUS]

23/19/16 (according to ISO 4406)

Ambient: -30 to 60°C [-22 to 140°F]

Part numbers for PVLA and plug

PVLA Cavity plug

157B2001 11177714

Technical Information

ECO 80 Directional Control Valve

EVBS mechanical flow control spools

The mechanical acting EVBS spools determine the flow out of the work section and are based on a generic platform with a wide selection of additional features, enabling you to tailor the EVBS to suit the demands of any hydraulic system and any function.

The mechanical acting EVBS spool comes in four different main variants:

•

EVBS Female Extension

•

EVBS Female Extension and through acting

•

EVBS Female Extension and Detent 03 position and 02 position spool out or in

•

EVBS Female Extension and Micro Switch

For 02 position detent spool out is necessary to use an accessory part number 11173406, see EVME, detent 02 position spool to A or

Danfoss | September 2020 BC199786485316en-000301 | 21

[l/min]

[US gal/min]

[mm]

<-Spool stroke->

[in]

0-0.04-0.08-0.12

-0.16-0.20

-0.24

-0.28-0.31-0.35

-0.39

100

0-1

-2

-3

-4

-5

0.39

0.350.310.28

0.240.20

0.16

0.120.080.04

[mm]

[in]

Flow

105

110

115

120

Spool types:

A = 8/min B = 25 l/min C = 40 l/min D = 60 l/min E = 80 l/min

F = 100 l/min*

Technical Information

ECO 80 Directional Control Valve

EVBS mechanical flow control spools

EVBS fluid flow characteristics - Theoretical performance

Oil flow as a function of spool travel

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