Bosch Rexroth M SED 6 VE1 Series Bedienungsanleitung

Explosion-proof

hydraulic valves,

Type M-.SED 6...VE1...

Operating instructions

RE 22049-VE1-B0/12.17

Replaces: 04.13

Material Number:

R901489373

1/16

3/2 and 4/2 directional seat valves

with solenoid actuation

Type M-.SED 6...VE1...

Size 6

Component series 1X

Maximum operating pressure 350 bar

Maximum flow 25 l/min

RA 22049-VE1-B1/04.13

Information on the explosion protection:

– Area of application according to NEC 505: Class I, Zone 1

– Type of protection of the valve solenoid:

AEx e mb IIC T4 Gb according to

ANSI / ISA 60079-7

ANSI / ISA 60079-18

For explosive areas

Part I Data sheet

What you need to know about these operating instructions

These operating instructions apply to the explosion-proof version of Rexroth valves and consist of the following two parts:

Part I Data sheet 22049-VE1-B1

Part II Product-specific instructions 22049-VE1-B2

You can find further information on the correct handling of Rexroth hydraulic products in our publication "General product informa-

tion on hydraulic products" 07008.

Operating instructions 22049-VE1-B0

Actual product may differ

2/16 Bosch Rexroth AG Hydraulics M-.SED 6...VE1... RA 22049-VE1-B1

Table of contents

Contents Page

Features 2

Ordering code and scope of delivery 3

Function, section, control spool symbols 4

Technical data 6

Technical data, information on the explosion protection 7

Switching times 7

Electrical connection 8

General information 10

Performance limits 10

Characteristic curves 11

Dimensions 12

Installation conditions 16

Features

– Direct operated directional seat valve with solenoid actua-

tion for use in explosive atmospheres

– Porting pattern according to ISO 4401-03-02-0-05

– Subplates available in FE/ZN version (see pages 12 to 15)

– Blocked, leak-tight connection

– Safe switching even with longer standstill periods un-

der pressure

– Wet-pin DC solenoids

– Solenoid coil rotatable by 90°

– Electrical connection as single connection with pipe

thread NPT 1/2"

– With concealed manual override

Hydraulics Bosch Rexroth AGRA 22049-VE1-B1 M-.SED 6...VE1... 3/16

3 main ports = 3

4 main ports = 4

Seat valve, electric,

direct operated

Size 6 = 6

Component series 10 to 19 = 1X

(10 to 19: Unchanged installation and connec-

tion dimensions)

Operating pressure up to 350 bar = 350

Solenoid, wet-pin = C

Direct voltage 24 V = G24

Direct voltage 110 V = G110

Ordering code and scope of delivery

Included in the scope of delivery:

Valve operating instructions

no code = NBR seals

V = FKM seals

Notice:

Observe compatibility

of seals with hydraulic

fluid used!

no code = Without

check valve insert,

Without throttle insert

P = With check valve insert

B12 = Throttle Ø 1.2 mm

B15 = Throttle Ø 1.5 mm

B18 = Throttle Ø 1.8 mm

B10 = Throttle Ø 2.0 mm

B12 = Throttle Ø 2.2 mm

Electrical connection

Z2 = Solenoid with terminal box

and cable gland,

For details see chapter

Electrical connection

VE1 =

Explosion protection "Increased Safety",

For details, see information on explosion

protection, page 7

N9 = With concealed manual override

no code = Without manual override

M SED 6 1X 350 C

VE1

Main ports 3 4

Control spool symbols

•–= UK

•–= CK

–•= D

–•= Y

• = available

TAP

741132

711

4/16 Bosch Rexroth AG Hydraulics M-.SED 6...VE1... RA 22049-VE1-B1

Function, section, control spool symbols: 3/2 directional seat valve

Control spool symbol

"UK"

Control spool symbol

"CK"

Type M-3SED 6 UK1X/350C...N9VE1Z2

Type M-3SED 6 CK...

General:

The directional valve type M-.SED is a direct operated di-

rectional seat valve with solenoid actuation. It controls the

start, stop and direction of flow and basically comprises

a housing (1), the solenoid (2), the valve seats (7) and (11)

and the control spool (4).

The manual override (6) allows for the switching of the valve

without solenoid energization.

Basic principle:

The initial position of the valve (normally open "UK" or nor-

mally closed "CK") is determined by the arrangement of the

spring (5). The chamber (3) behind the control spool (4) is

connected to port P and sealed against port T. Thus, the

valve is pressure-compensated in relation to the actuating

forces (solenoid and spring).

By means of the control spool (4), the ports P, A and T can

be loaded with the maximum operating pressure (350 bar)

and the flow can be directed in both directions (see control

spool symbols).

In the initial position, the control spool (4) is pressed onto the

seat (11) by the spring (5), in spool position, it is pressed onto

the seat (7) by the solenoid (2). The flow is blocked in a leak-

free manner.

Seat valves can be used according to the control spool sym-

bols and the related operating pressures and flows (see per-

formance limits on page 10).

TB P A

8109

11 2

Hydraulics Bosch Rexroth AGRA 22049-VE1-B1 M-.SED 6...VE1... 5/16

Function, section, control spool symbols: 4/2 directional seat valve

Type M-4SED 6 Y1X/350C...N9VE1Z2

Using a sandwich plate, the Plus-1 plate, under the 3/2 direc-

tional seat valve, the function of a 4/2 directional seat valve

is achieved.

Function of the Plus-1 plate:

Initial position:

The main valve is not operated. The spring (5) holds the con-

trol spool (4) on the seat (11). Port P is blocked and A con-

nected to T. I addition, one control line is connected from A to

the large area of the control spool (8), which is thus unloaded

to the tank. The pressure applied via P now pushes the ball

(9) onto the seat (10). Now, P is connected to B, and A to T.

Transition position:

When the main valve is operated, the control spool (4) is

shifted against the spring (5) and pressed onto the seat (7).

Thereby, port T is blocked, P, A, and B are briefly connected

to each other.

Spool position:

P is connected to A. As the pump pressure acts via A on the

large area of the control spool (8), the ball (9) is pressed onto

the seat (12). Thus, B is connected to T, and P to A. The

ball (9) in the Plus-1 plate has a "positive spool overlap".

Important:

To prevent pressure intensification in conjunction with

differential cylinders, the annulus area of the cylinder

must be connected to A.

The use of the Plus-1 plate and the seat arrangement offer

the following options:

Control spool symbol "D" Control spool symbol "Y"

ATBP

57411

9108

Schematic illustration: Initial position

3/2 directional

seat valve

Plus-1 plate

6/16 Bosch Rexroth AG Hydraulics M-.SED 6...VE1... RA 22049-VE1-B1

Throttle insert

The use of a throttle insert is required when due to prevail-

ing operating conditions, flows can occur during the switching

processes, which exceed the performance limit of the valve.

Examples:

– Accumulator operation;

– Use as pilot control valve with internal pilot fluid tapping.

3/2 directional seat valve (see page 4)

The throttle insert is inserted into

port P of the seat valve.

4/2 directional seat valve (see page 5)

The throttle insert is inserted into

port P of the Plus-1 plate.

Check valve insert

The check valve insert allows free flow from P → A and clos-

es A → P in a leak-free way.

3/2 directional seat valve (see page 4)

The check valve insert is inserted into port P of the

seat valve.

4/2 directional seat valve (see page 5)

The check valve insert is inserted in

port P of the Plus-1 plate.

Function, section: Throttle insert, check valve insert

Technical data

general

Installation position Any

Ambient temperature range °C –20 … +60

Storage temperature range °C +15 … +30

Admissible vibration load 20 … 2000 Hz amplitude 0.05 g2/Hz (10 g RMS)

Weight 3/2 directional seat valve kg 3.1

4/2 directional seat valve kg 3.9

Surface protection Galvanic coating

hydraulics

Maximum operating pressure bar See table on page 10

Maximum flow l/min 25

Hydraulic fluid Mineral oil (HL, HLP) according to DIN 51524 1); Rapidly

biodegradable hydraulic fluids according to VDMA 24568

(see also RE 90221); HETG (rape seed oil) 1); HEPG (poly-

glycols) 2); HEES (synthetic esters) 2);

Other hydraulic fluids upon request

Ignition temperature > 180 °C

Hydraulic fluid temperature range °C –20 ... +80 (for NBR seals)

–15 ... +80 (for FKM seals)

Viscosity range mm2/s 2.8 … 500

Maximum permitted degree of contamination of the hydraulic

fluid cleanliness class according to ISO 4406 (c) Class 20/18/15 3)

1) Suitable for NBR and FKM seals

2) Suitable only for FKM seals

3) The cleanliness classes specified for the components must

be adhered to in hydraulic systems. Effective filtration

prevents faults and at the same time increases the life

cycle of the components. For the selection of the filters see

www.boschrexroth.com/filter.

Hydraulics Bosch Rexroth AGRA 22049-VE1-B1 M-.SED 6...VE1... 7/16

Technical data

1) Surface temperature > 50 °C, provide contact protection.

Switching times t in ms (installation position: Solenoid horizontal)

Pressure p

in bar

Flow qV

in l/min

DC solenoid

Control spool symbols UK, CK, D and Y

ton toff

without tank pressure UK D

UK CK D Y CK Y

70 25 50 45 55 50 10 10

140 25 65 45 70 50 10 15

210 25 75 55 80 60 10 15

280 25 90 55 95 60 15 20

315 25 95 55 100 60 15 20

350 25 100 55 105 60 20 25

electric

Voltage type Direct voltage

Available voltages V 24, 110

Voltage tolerance (nominal voltage) % –5 / +10

Admissible residual ripple % < 5

Duty cycle / operating mode according to VDE 0580 100 % / S1 (continuous operation)

Switching time according to ISO 6403 See table below

Switching frequency 1/h up to 15000

Nominal power at ambient temperature 20 °C W 17

Maximum power with 1.1 x nominal voltage and ambi-

ent temperature 20 °C W 20.6

Protection class according to NEMA 250 NEMA TYPE 4 1)

1) If the electrical connection is correctly installed.

Area of application according to NEC 505 Class I, Zone 1

Maximum surface temperature 1)

Temperature class

°C 135

Type of protection of the valve solenoid according to

ANSI / ISA 60079-7

ANSI / ISA 60079-18

AEx e mb IIC T4 Gb

FM certificate 3044741

Ambient temperature range °C –20 … +60

Special conditions for safe use The maximum temperature of the valve casing surface

is 125 °C. This has to be considered when selecting the con-

nection cable and contact of the connection cable with the

casing surface is to be prevented.

Information on the explosion protection

8/16 Bosch Rexroth AG Hydraulics M-.SED 6...VE1... RA 22049-VE1-B1

Electrical connection

The type-tested valve solenoid of the valve is equipped with

a terminal box and a type-tested cable gland.

Important

When establishing the electrical

connection, the protective earth-

ing conductor (PE ) has to be

connected properly.

The connection is polarity-independent.

Properties of the connection terminals and mounting elements

Item Function Connectable line cross-section

1 Operating voltage connection Single-wire 0.75 … 2.5 mm2

Finely stranded 0.75 … 1.5 mm2

2 Connection for protective earthing conductor Single-wire max. 2.5 mm2

Finely stranded max. 1.5 mm2

3 Connection for potential equalization conductor Single-wire 6 mm2

Finely stranded 4 mm2

4 Screws for cover –

5 Plug screw –

Connection line

Line type Non-armored cables and lines (outer sheath sealing)

Temperature range °C –20 … > +100

1 45

Adapter with internal thread

NPT1/2"

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