ATOS ATEX, IECEx, EAC Specifications

Ex-proof solenoid directional valves

on-off, direct operated, spool type

- ATEX, IECEx, EAC or CULUS

EX010

DHA-06*

 valve body  spool  ex-proof solenoid  manual override  threaded connections for cable gland  internal terminal board for cable connection

DHA Spool type, direct operated directional

valves equipped with ex-proof solenoids certified for safe operation in hazardous environments with potentially explosive atmosphere.

Certifications:

•

Multicertification ATEX, IECEx and EAC for gas group II 2G and dust category II 2D

•

Multicertification ATEX and IECEx for gas group I M2 (mining)

•

cULUS North American certification for gas group C&D

DHA valves are SIL compliance with IEC 61508 (TÜV certified)

The flameproof enclosure of solenoid prevents the propagation of accidental internal sparks or fire to the external environment.

The solenoid is also designed to limit the surface temperature within the classified limits.

Size: 06 - ISO 4401 Max flow: 70 l/min Max pressure: 350 bar

A

B













Ex-proof solenoid directional valve, direct operated

Solenoid threaded connection for cable gland fitting: GK = GK-1/2” - not for

CULUS

M = M20x1,5 - not for

CULUS

NPT = 1/2” NPT

1

MODEL CODE

Configuration

, see section

:

2

Spool type

, see section

:

2

Series number

Valve size (ISO 4401) 0 = 06

(1) The valves with Multicertification for Group II are also certified for Indian market according to PESO (Petroleum and Explosives Safety Organization).

The PESO certificate can be downloaded from www.atos.com

(2) Not for multicertification M group I (mining) (3) For possible combined options, see 11.1 (4) Options MV and AMV are available only for configuration 61, 61/A, 63, 63/A, 71 and with spool type 0, 0/2, 1, 1P, 1/2, 1/2P, 3, 3P, 4, 7.

Not available in combination with option WP

Options (3): A = solenoid at side of port B

(for single solenoid valves)

O = horizontal cable entrance (2) WP =

manual override protected by metallic cap

Hand lever options

(4):

MV = vertical hand lever AMV = vertical hand lever installed at side of port B

DHA

// //-

M * 24DC

** *

* 0 1/2

63

Certification type:

Multicertification ATEX, IECEx, EAC:

- = omit for Group II 2G / II 2D (1) M = Group I M2 (mining)

North American Certification: UL =

CULUS

Voltage code, see section

5

Seals material,

see section

:

- =

NBR

PE = FKM BT = HNBR

(1)

6

The pressure at T port makes difficult the manual override operation that can be possible only if its value is lower than 50 bar

Table EX010-1/E

Replaces E120-28/E

E125-16/E

2

1

2

1

02

1

0

1

71

63

61

75

67/A

63/A

61/A

67

2

CONFIGURATIONS AND SPOOLS (representation according to ISO 1219-1)

0

8

49

1

90

16

2

09

17

3

91

58

4

19

5

93

6

39

7

94

02

0

1

2

1

0/2

1/2

2/2

(1)

Configurations Spools Configurations Spools

2

1

70

2.1 Special shaped spools

- spools type 0 and 3 are also available as 0/1 and 3/1 with restricted oil passages in central position, from user ports to tank.

-

spools type 1, 4, 5 and 58 are also available as 1/1, 4/8, 5/1 and 58/1.

They are properly shaped to reduce water-hammer shocks during the swiching.

- spools type 1, 1/2, 3, 8 are available as 1P, 1/2P, 3P, 8P to limit valve internal leakages.

Operating pressure

Ports P,A,B: 350 bar; Port T 210 bar

Rated flow

See diagrams Q/Δp at section

12

Maximum flow

70 l/min, see operating limits at section

13

4

HYDRAULIC CHARACTERISTICS

For spool type 2 and 2/2 port T of the valve must be connected to tank if the operating pressure exceed the max T pressure reported at section

(1): not available for configuration 75

3

Assembly position / location Any position Subplate surface finishing Roughness index Ra 0,4 - flatness ratio 0,01/100 (ISO 1101) MTTFd values according to EN ISO 13849

150 years, for further details see technical table P007

Ambient temperature

Standard = -20°C ÷ +70°C /PE option = -20°C ÷ +70°C /BT option = -40°C ÷ +70°C

Storage temperature range

Standard = -20°C ÷ +80°C /PE option = -20°C ÷ +80°C /BT option = -40°C ÷ +70°C

Surface protection

Zinc coating with black passivation (body and solenoid housing)

Compliance

Explosion proof protection, see section

7

3

GENERAL CHARACTERISTICS

01 02

EX010

7

CERTIFICATION DATA

Type examination certificate (1)

Method of protection

Cable entrance: threaded connection vertical (standard) or horizontal (option /O)

DHA

DHA/M

DHA/UL

T6

≤ 85 °C

-40 ÷ +45 °C

ATEX: CESI 02 ATEX 014 IECEx: IECEx CES 10.0010x EAC: TC RU C-IT. 08.B.01784

ATEX: CESI 03 ATEX 057x IECEx: IECEx CES 12.0007x

20170324 - E366100

OA

OA/M OA/EC

Multicertification Group II Multicertification Group I North American

CULUS

-

≤ 150 °C

-20 ÷ +70 °C

T4

≤ 135 °C

-40 ÷ +70 °C

T6

-40 ÷ +55 °C

T5

-40 ÷ +70 °C

Valve type

Solenoid certified code

UL 1203 and UL429, CSA 22.2 n°30-1986

CSA 22.2 n°139-13

Temperature class Surface temperature Ambient temperature

(2)

≤ 85 °C ≤ 100 °C

ATEX IECEx EAC

CULUS

Certifications

ATEX IECEx

• ATEX 2014/34/EU Ex I M2 Ex db I Mb

• IECEx

Ex db I Mb

• ATEX 2014/34/EU Ex II 2G Ex d IIC T6/T4/T3 Gb Ex II 2D Ex tb IIIC T85°C/T200°C Db

• IECEx Ex d IIC T6/T4/T3 Gb Ex tb IIIC T85°C/T200°C Db

• EAC Ex II 2G Exd IIC T6/T4

• UL 1203 Class I, Div.I, Groups C & D Class I, Zone I, Groups IIA & IIB

GK = GK-1/2” M = M20x1,5 NPT = 1/2” NPT

1/2” NPT ANSI/ASME B46.1

5

ELECTRICAL CHARACTERISTICS

(1) For alternating current supply a rectifier bridge is provided built-in the solenoid

For power supply frequency 60 Hz, the nominal supply voltage of solenoids 110AC and 230AC must be 115/60 and 240/60 respectively

Coil insulation

VAC 50/60 Hz ±10%

Voltage code (1)

V

DC

±10%

Duty factor

Power consumption at 20°C

Protection degree with relevant cable gland

DHA

DHA/M

DHA/UL

Valve type

12DC, 24DC, 28DC, 48DC, 110DC, 125DC, 220DC

12DC, 24DC, 110DC,

125DC, 220DC

12AC, 24AC, 110AC, 230AC

8W

12W

class H

IP66/67 to DIN EN60529

raintight enclosure, UL approved

100%

Seals, recommended fluid temperature

NBR seals (standard) = -20°C ÷ +60°C, with HFC hydraulic fluids = -20°C ÷ +50°C FKM seals (/PE option) = -20°C ÷ +80°C

HNBR seals (/BT option) = -40°C ÷ +60°C, with HFC hydraulic fluids = -40°C ÷ +50°C Recommended viscosity 15÷100 mm2/s - max allowed range 2.8 ÷ 500 mm2/s Max fluid contamination level ISO4406 class 20/18/15 NAS1638 class 9, see also filter section at www.atos.com or KTF catalog

Hydraulic fluid Suitable seals type Classification Ref. Standard

Mineral oils NBR, FKM, HNBR HL, HLP, HLPD, HVLP, HVLPD DIN 51524 Flame resistant without water FKM HFDU, HFDR

ISO 12922

Flame resistant with water NBR, HNBR HFC

6

SEALS AND HYDRAULIC FLUIDS - for other fluids not included in below table, consult our technical office

(1) Performance limitations in case of flame resistant fluids with water:

-max operating pressure = 210 bar

-max fluid temperature = 50°C

The ignition temperature of the hydraulic fluid must be 50°C higher than the max solenoid surface temperature.

(1) The type examinator certificates can be downloaded from www.atos.com (2) The solenoids Group II and CULUS are certified for minimum ambient temperature -40°C

In case the complete valve must withstand with minimum ambient temperature of -40°C, select /BT in the model code

WARNING: service work performed on the valve by the end users or not qualified personnel invalidates the certification

Applicable standards

EN 60079-0: 2012+A11:2013 EN 60079-1:2014 EN 60079-31:2014

IEC 60079-0:2017 IEC 60079-1:2017-04 IEC 60079-31:2013

10

CABLE GLANDS only for Multicertification

Cable glands with threaded connections GK-1/2”, 1/2”NPT or M20x1,5 for standard or armoured cables have to be ordered separately, see tech. table KX600

Note: a Loctite sealant type 545, should be used on the cable gland entry threads

Max ambient temperature [°C]

Temperature class

Group I Group II

Max surface temperature [°C]

Group I Group II

Min cable temperature

45 °C not prescribed 70 °C 90 °C

Max ambient temperature [°C] Temperature class Max surface temperature [°C] Min cable temperature

55 °C T6 85 °C 100 °C 70 °C T5 100 °C 100 °C

CULUS certification

Multicertification

9

CABLE SPECIFICATION AND TEMPERATURE - Power supply and grounding cables have to comply with following characteristics:

9.1 Cable temperature

The cable must be suitable for the working temperature as specified in the “safety instructions” delivered with the first supply of the products.

Power supply: section of coil connection wires = 2,5 mm

2

Grounding: section of internal ground wire = 2,5 mm

2

section of external ground wire = 4 mm

2

Multicertification Group I and Group II

cULus certification:

• Suitable for use in Class I Division 1, Gas Groups C

• Armored Marine Shipboard Cable which meets UL 1309

• Tinned Stranded Copper Conductors

• Bronze braided armor

• Overall impervious sheath over the armor Any Listed (UBVZ/ UBVZ7) Marine Shipboard Cable rated 300 V min, 15A min. 3C 2,5 mm

2

(14 AWG) having a suitable service temperature

range of at least -25°C to +110°C (“/BT” Models require a temperature range from -40°C to +110°C) Note 1: For Class I wiring the 3C 1,5 mm

2

AWG 16 cable size is admitted only if a fuse lower than 10 A is connected to the load side of the

solenoid wiring.

85 °C

135 °C

150 °C 150 °C

T6 T4

-

1 = Coil 2 = GND 3 = Coil

PCB 3 poles terminal board suitable for wires cross sections up to 2,5 mm

2

(max AWG14)

8

EX PROOF SOLENOIDS WIRING

Standard version

Option /O





 cover with threaded connection for vertical cable gland fitting  cover with threaded connection for horizontal cable gland fitting  terminal board for cables wiring  standard manual override  screw terminal for additional equipotential grounding

Multicertification

C

UL

US

certification







 

Standard version

Option /O





 cover with threaded connection for vertical cable gland fitting  cover with threaded connection for horizontal cable gland fitting

 terminal board for cables wiring  standard manual override









1 = Coil + 2 = GND 3 = Coil -

alternative GND screw terminal connected to solenoid housing

Pay attention to coil polarity

PCB 3 poles terminal board suggested cable section up to 1,5 mm

2

(max AWG16), see section note 1

9

3

n°4 M4 locking torque 4Nm

3

n°4 M4 locking torque 4Nm

12

Q/Δp DIAGRAMS (based on mineral oil ISO VG 46 at 50°C)

Valve pressure drop Δp [bar]

Flow rate [l/min]

GF

E

D

C

B

A

Flow rate [l/min]

Inlet pressure [bar]

C

A

B

13

OPERATING LIMITS (based on mineral oil ISO VG 46 at 50°C)

0, 0/1, 1, 1/1, 8 0/2,1/2, 3, 6, 7

3/1, 4, 4/8, 5, 5/1, 16, 17, 19, 39 49, 58, 58/1, 09, 90, 91, 93, 94

A

B

C

Spool type

diagram

Flow direction

Spool type

P씮A P씮B A씮T B씮T P씮T

0, 0/1 A A C C D 1, 1/1 D C C C

3, 3/1

D D A A 4, 4/8, 5, 5/1, 49, 58, 58/1, 94 F F G C E 1/2, 0/2 D D D D 6, 7, 16, 17 D D D D 8 A A E E 2 D D 2/2 F F 09, 19, 90, 91 E E D D 39, 93 F F G G

24

20

16

12

8

4

0

0 15 30 45 60 75 90

400

320

240

160

80

0

0 15 30 45 60 75

11

OPTIONS

A = solenoid at side of port B (for single solenoid valves) O = Horizontal cable entrance , to be selected in case of limited verical space WP = Manual override protected by metallic cap

11.1 Possible combined options: /AO, /AWP, /OWP, /AMV, /OMV, /AOWP, /AOMV

Total angle stroke [°deg] ± 28° Working angle stroke [°deg] ± 15°

Lever actuating force [N] 1 ÷ 8 Lever device weight [g] 880

Hand lever option: MV = Auxiliary vertical hand levers

This option allows to operate the valves in absence of electrical power supply, i.e. during commissioning, maintenance or in case of emergency. When the valve is electrically operated the hand lever remains stopped in its rest position The hand lever execution does not affect the performances of the original valves

EX010

AMV=Vertical hand lever installed at side of port B

Notes:

Options MV and AMV are available only for configuration 61, 61/A, 63, 63/A, 71 and with spool type 0, 0/2, 1, 1P, 1/2, 1/2P, 3, 3P, 4, 7 Not available in combination with option WP MV option

and AMV

allow to operate the valve in absence of electrical power supply.

For detailed description of DHA with hand lever option see tech. table E138

14

INSTALLATION DIMENSIONS [mm] - Multicertified and UL

ISO 4401: 2005 (see table P005) Mounting surface:

4401-03-02-0-05

Fastening bolts: 4 socket head screws: M5x50 class 12.9 Tightening torque = 8 Nm Seals: 4 OR 108 Ports P,A,B,T: Ø = 7.5 mm (max)

P = PRESSURE PORT A, B = USE PORT T = TANK PORT

ø5.5

40.5

30.2

21.5

12.7

31

25.9

15.5

5.1

0.75

31.75

164.5

66 1180.57

49

25 24

68.5

87

18.5

241

6680.57 80.5 7

164.5

6680.5711

184

6680.526.5 11

164.5

6611 80.5 7

50

25 25

68.5

87

18.5

49

25 24

68.5

115.5

47

49

25 24

68.5

87

18.5

98.5

for UL

30 for UL

98.5

for UL

30 for UL

98.5

for UL

30 for UL

DHA-06 /A

DHA-06

DHA-07

DHA-06 /O

DHA-06 /WP

27

Valve’s bottom view

Mass [kg]

DHA-06 2,65 DHA-07 4,3 Option /O +0,35 Option /WP +0,25

ISO 4401: 2005 (see table P005) Mounting surface:

4401-03-02-0-05

Fastening bolts: 4 socket head screws: M5x30 class 12.9 Tightening torque = 8 Nm Seals: 4 OR 108 Ports P,A,B,T: Ø = 7.5 mm (max)

P = PRESSURE PORT A, B = USE PORT T = TANK PORT

ø5.5

40.5

30.2

21.5

12.7

31

25.9

15.5

5.1

0.75

31.75

219.5

55 1180.57

51

25 26

157

66

219.5

55 780.511 66

304

66 1180.555

304

55 1180.56611 80.5

11 80.5

DHA-06 /MV

DHA-06 /AMV

DHA-07 /MV

DHA-07 /AMV

51

26 25

157

51

25 26

157

51

26 25

157

01/19

Valve’s bottom view

Mass [kg]

DHA-06/MV 2,9 DHA-07/MV 4,55

15