Stahl BusRail 9494, User Manual, Page: 6 / 12

BusRail Series 9494
2
201 - - ·BA00·III·en·0 200875 / 9494601310 www.stahl-ex.com
2
perating Instructions for the IS1-System
IS1 I/O-Modules
Components
Designing
✗ The BusRail serves for electric connection between the
CPU & Power Module and the I/O Modules.
✗ The BusRail can be installed in hazardous areas of Zone 1/
Division 1, Zone 2/Division 2, Zone 21 or Zone 22. Actually
certified application area of IS1 system depends on the
modules installed.
✗ A mixed arrangement of the BusRail with different
I/O modules is permitted. When assembling a Zone 1 module
near Zone 2 module (94../15) it is required to assemble a
partition (ID No.: 162740)!
✗ Permitted assembly direction of the BusRail depends on the
modules installed. The distance between the BusRail and
enclosure walls or other equipment depends on the modules
installed.
✗ At the beginning or end of every BusRail segment a BusRail
termination must be assembled in order to secure the
BusRail against loosening and to protect the pins of
extendable BusRail against soiling and unintended contact.
✗ The DIN rail of every BusRail segment must be connected to
the shield buses installed in the enclosure! In Zone 1 the
Ex e terminal must be used for this purpose.
✗
The maximum equipment of a BusRail segment is:
in Zone 1: 10 Modules (2 x CPM, 8 x IOM)
in Zone 2: 18 Modules (2 x CPM, 16 x IOM).
✗ The number of effectively used I/O modules can be limited by
the fieldbus protocol.
✗
Subsequent extension of the BusRail to the maximum length
is possible. For the simple extension the last BusRail part of
the segment should be extendable (Type 9494/A 1-M4).
Assembly and Installation
Version Description Order number Weight
kg
BusRail
04829E00
for 4 modules 9494/S1-M4 0.100
07005E00
for 2 modules begin 9494/S1-B2 0.062
for 2 modules end 9494/S1-E2 0.062
End cover BusRail
04826E00
begin 9494/A1-B0 0.044
04810E00
end 9494/A1-E0 0.044
End cover with
connection cable
04769E00
0.7 m / 27.5 in 9494/L1-V7 0.210
1.10 m / 43.3 in 9494/L1-V8 0.260
length acc. specification 9494/L1-V9 --
DIN rail
04768E00
For inserting the BusRail
(
>
0.5 m / 19.7 in and
<
2 m / 78.7 in),
35 x 15 x 1.5 mm
(EN 50022)
103714 1.410
The national installation instructions
(e.g. IEC/EN 60079-14) must be observed.
Intrinsically-safe and non-intrinsically safe circuits must
not be used in a common cable duct!
Ensure that there is a distance of at least 50 mm
between connection facilities of intrinsically-safe and
non-intrinsically safe circuits!
The national installation instructions
(e.g. IEC/EN 60079-14) must be observed.
Intrinsically-safe and non-intrinsically safe circuits must
not be used in a common cable duct!
Ensure that there is a distance of at least 50 mm
between connection facilities of intrinsically-safe and
non-intrinsically safe circuits!
At the beginning or end of every BusRail segment a
BusRail termination must be assembled in order to
secure the BusRail against loosening and to protect the
pins of extendable BusRail against soiling and
unintended contact.
The DIN rail of every BusRail segment must be
connected to the shield buses installed in the
enclosure! In Zone 1 the Ex e terminal must be used for
this purpose.
The maximum equipment of a BusRail segment is:
• in Zone 1: 10 Modules (2 x CPM, 8 x IOM)
• In Zone 2: 18 Modules (2 x CPM, 16 x IOM)
For assembly only DIN rails are certified similarly to
EN 50022, Type NS35/15 (35 x 15 x 1.5),
In order for the BusRail to be inserted correctly only
screws with a maximum screw head height 4 mm can
be used for the DIN rail assembly.
The assembly position of the DIN rail depends on the
modules installed.
During operation all modules must be assembled
vertically or horizontally.
The assembly position "lying" or "hanging upside
down" is not permitted for all modules!