Assembly position Any position
Subplate surface finishing Roughness index, flatness ratio 0,01/100 (ISO 1101)
Ambient temperature See section 1
Fluid Hydraulic oil as per DIN 51524 ... 535 for other fluids see model code sections
Recommended viscosity 15 ÷100 mm
2
/s at 40°C (ISO VG 15÷100)
Fluid contamination class ISO 18/15 achieved with in line filters of 10 μm and β
10 _>75 (recommended)
Fluid temperature -20°C +60°C (standard and /WG seals) -20°C +80°C (/PE seals)
2 MAIN CHARACTERISTICS OF EX-PROOF PROPORTIONAL VALVES
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Ex-proof proportional valves with integral digital drivers
with or without integral position or pressure transducer - ATEX certification
Table F600-0/E
F600
DKZA-TES-
*
valve body
ex-proof solenoid
ex-proof position transducer
ex-proof electronics housing
digital integral electronics
ex-proof cable glands (to be ordered separately)
ex-proof solenoid
3
CERTIFICATION
= Equipment for explosive atmospheres
II = Group II for surfaces plants
2 = High protection (equipment category)
G = For gas and vapours
d = Flame proof housing
IIC = Gas group
T6/T5/T4/T3
In the following are resumed the valves marking according to Atex 94/9/CE
3.1 EXAMPLE OF NAMEPLATE MARKING
Notified body and certificate number
Marking according to Atex Directive
Zone 1
Zone 2
= Temperature class of solenoid surface referred to
the max ambient temperature
=
Possibility of explosive atmosphere during normal functioning
= Low probability of explosive atmosphere
WARNING: service work provided on the valve by the end users or not qualified personnel invalidates the certification
.
.
.
.
.
.
Ex-proof ZA valves are proportional val-
ves equipped with specific solenoids and
integral digital electronic drivers certified
to ATEX 94/9/CE, protection mode:
쐌 Ex II 2 G Ex d IIC T6/T5/T4/T3 (group II
for surface plants with gas or vapours
environment, category 2, zone 1 and 2)
The solenoid and the electronics housing
are designed to contain the possible
explosion which could be caused by the
presence of the gas mixture inside the
housing, thus avoiding dangerous propa-
gation in the external environment. They
are also designed to limit the external
temperature according to the certified
class to avoid the self ignition of the
explosive mixture present in the environ-
ment.
The integral digital drivers in explosion
proof construction provides consistent
advantages respect to the separated ana-
log drivers for ex-proof valves:
쐌 compact execution
쐌 simplified valve wiring
쐌 reduced risk of electromagnetic distur-
bances on the valve’s transducer feed-
back signal
쐌 possibility to exploit in hazardous envi-
ronment all the advantages provided by
the standard digital electronics: softwa-
re setting of the main functional parame-
ters as bias, ramps, scale, linearization
of the hydraulic regulation characteristic
쐌 complete diagnostics of the driver sta-
tus, and fault condition.
Following communication interfaces are
available:
쐌 PS, Serial communication interface for
the software setting of the functional
parameters. The valve is operated by
analogue command signal.
쐌 BC, CANopen interface
쐌 BP, PROFIBUS DP interface
The valves with -BC and -BP interfaces
can be integrated into a fieldbus
communication network and thus digitally
operated by the machine control unit.
The ex-proof digital integral electronics is
available for the full range of proportional
valves, as shown in the following pages.
ATEX certification Ex II 2G Ex d IIC T6/T5/T4/T3
1 EXPLOSION PROOF CERTIFICATION MAIN DATA
VALVE TYPE
Temperature class
(only for Group II)
Surface temperature
Ambient temperature
DOUBLE SOLENOID VALVES
(with or without transducer)
SINGLE SOLENOID VALVES
(with or without transducer)
T4
≤ 135 °C
-20 ÷ +40 °C
T3 (option /7)
≤ 200 °C
-20 ÷ +60 °C
T6
≤ 85 °C
-20 ÷ +45 °C
T5 (option /7)
≤100 °C
-20 ÷ +60 °C
Mechanical construction
Cable entrance and
electrical wiring
Protection degree
IP 66 According to IEC 144 when correctly coupled with the relevant cable gland
see section
20
Flame proof housing classified Ex d, according to EN 60079-0: 2006, EN 60079-1: 2007
Internal terminal board for cable connections
M20x1.5 threaded connection for cable entrance
.
Note:
This technical table contains information about ex-proof certification data, model codes,
dimensions and wiring of the ex-proof proportional valves with integral digital electronics.
For detailed information about:
-valve’s functional characteristics and mounting surface dimensions
-digital drivers technical data and functional parameters setting
see the relevant technical tables of the standard proportional valves and digital drivers.