161936 / 941160310020
2015-09-15·BA00·III·en·08
Mounting and Installation
17
Zone 1 Ex e field device coupler
Series 9411/11
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Shielding Class A Singlepoint
Shielding Class B Multipoint
10634E00
• Lay all cable shields
of the trunk and spur
on the shield bus
• Remove the cable
connection between
the shield bus and the
earth bolt
(delivery status)
• Insulate the cable
shields of the spurs
connected to the field
devices and do not
earth them
11345E00
• Lay all cable shields
of the trunk and spur
on the shield bus
• Connect the earth
bolt with the shield
bus so that good
conductance is
achieved
(delivery status)
• Connect the shield
bus to earth via the
shortest possible
route
• Directly earth the
cable shields of the
spurs to the field
devices
S
HOST
Single Point Grounding
-
+
TRUNK OUT
TRUNK IN
S
-
+
T
FPS
S
-
+
TRUNK IN
TRUNK OUT
TERM
T1T2
S - +
S - +
Shielding bar
SPUR 1
SPUR 2
SPUR 3
SPUR 4
S - +
S - +
S - +
S - +
nicht
Ex i
TRUNK IN
TRUNK OUT
TERM
T1T2
S - +
S - +
Shielding bar
SPUR 1
SPUR 2
SPUR 3
SPUR 4
nicht
Ex i
nicht
Ex i
TRUNK OUT
- +
- +
- +
- +
S
S
S
S
Foundation Fieldbus H1
oder Profibus PA
Trunk
nicht
Ex i
S
HOST
Multi Point Grounding
-
+
TRUNK OUT
TRUNK IN
S
-
+
T
FPS
S
-
+
TRUNK IN
TRUNK OUT
TERM
T1T2
S - +
S - +
Shielding bar
SPUR 1
SPUR 2
SPUR 3
SPUR 4
S - +
S - +
S - +
S - +
nicht
Ex i
TRUNK IN
TRUNK OUT
TERM
T1T2
S - +
S - +
Shielding bar
SPUR 1
SPUR 2
SPUR 3
SPUR 4
nicht
Ex i
nicht
Ex i
TRUNK OUT
- +
- +
- +
- +
S
S
S
S
Foundation Fieldbus H1
oder Profibus PA
Trunk
nicht
Ex i