2 Safety
8
OZD Profi G12D... ATEX 1 V. 03 07/2014
Excessive force on the glands may endanger the protec-
tion class. For ensuring protection class IP 54:
all seals must be fitted intact and correctly,
all screws of the housing/housing cover must be
tightened with the appropriate torque,
only cables of appropriate sizes must be used in the
cable glands,
all cable glands must be tightened with the appropri-
ate torque,
all free cable glands must be sealed with sealing
plugs.
The PROFIBUS Fiberoptic Repeater are delivered in
housings of protection class IP 66. The same provisions
are applicable for this.
1.7.2 Assembly in zone 1 or zone 21
The devices must be installed in a housing with minimum
protection class IP 54 as per gas-ex in zone 1.
IP 6* must be complied for conductive and non-conduc-
tive dust.
Temperature class T4 specified in the EC-type examina-
tion certification PTB 04 ATEX 1030 must be maintained
at maximum ambient temperature of the housing of
<
_ 60 °C.
The housing cover may be opened in zone 1 for servicing
during ongoing operation.
Terminals in increased safety are covered.
The cover may be removed only if there is no explosion
hazard circuits are switched to zero potential before-
hand.
1.7.3 Assembly in zone 2 or zone 22
The devices must be installed in a housing with minimum
protection class IP 54 as per gas-ex in zone 2. For the
assembly, besides devices in housing design, even DIN
rail modules are available as per the data sheet. The
modules must be installed as asso ciated equipment in
safe area or in su itable housing in zone 2.
IP 6* must be complied for conductive and non-conduc-
tive dust.
Temperature class T4 specified in the statement of con-
formity must be maintained at maximum ambient -
temperature of the housing of <
_ 60 °C under normal
operating conditions.
The housing cover may be opened in zone 2 for servicing
during ongoing operation. In Zone 22 the housing cover
may be opened only in the current-free state.
All terminals are covered.
The cover may be removed in zone 2 and also in the safe
area for servicing. The terminals are then accessible.
Select the assembly location such that climatic limit val-
ues specified in the technical data are maintained.
