Samson 430 Series, Монтаж и эксплуатация

Страница: 45 / 78

EB 7030 EN 45
Use in hazardous areas
10 Use in hazardous areas
The Type 3430 Controller is suitable for use
in hazardous areas of Zone 1 and 2 without
its own EU-type examination certificate. A
EU-type examination certificate according to
2014/34/EU (ATEX Directive) is not re
-
quired for the controller.
Risk of explosion
− Installation and maintenance of the equip-
ment within hazardous areas must be per -
formed in such a way as to prevent elec -
trostatic charging.
− Only use non-flammable media for pneu-
matic supply.
− Within hazardous areas of zone 21 or
zone 22, the Type 6112 i/p Converter, in-
ductive limit contacts, and Type 3438 Tem-
perature Transmitter (TTH 200-E1H and
Type 6112) must be connected to intrinsi-
cally safe circuits. The housing of the
Type 3430 Indicating Controller does not
meet the requirements of EN 60079-31 for
type of protection Ex t (protected by enclo-
sure).
WARNING !
Conditions for use in hazardous areas:
− The control station is not labeled with the
associated mark of approval for explo
-
sion-protected equipment.
− All installed explosion-protected modules
have their own EU type examination cer
-
tificate.
− The maximum permissible values speci -
fied in the associated type examination
certificates apply when connecting to
certified intrinsically safe circuits.
− Installation, wiring, terminals, cable en -
tries and other components that are rele -
vant to explosion protection comply with
EN 60079-0, EN 60079-11 and
EN 60079-14.
− The measuring current circuit of the
type TTH200-E1H transmitter complies
with type of protection "ia" and can be
connected to sensors routed into zone 0.
The transmitter itself must be installed in
zone 1 or zone 2.
− To prevent static charging, the control
station's transparent door and window
have a conductive coating.
− Due to the plastic coating of the housing,
action to avoid electrostatic charging ac
-
cording to TRGS 727 (Technical Rules for
Hazardous Substances) must be taken
when performing maintenance work.
− Connection to equipotential bonding sys -
tem according to Clause 6.3 of
EN 60079-14.