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4. Brief description
The SIRAX BP 902 backplane is designed for 8 plug-in
SIRAX modules. It establishes the connections between the
modules and the system of which it is part. The back of the
holder is shaped to fit onto a top-hat rail.
Backplanes in version [EEx ia] IIC may only be used for con-
necting the correspondingly certified devices manufactured
by Camille Bauer Ltd.
Refer to the type test certificate of the device inserted into
holder for the electrical data.
5. Technical data
Backplane
Electrical
connections:
Screw terminals with wire guards
for max. 2 × 0.75 mm
1 × 2.5 mm
EN 60 947-7-1
Edge connectors:
96 pin
acc. to DIN 41 612, pattern C
Coding strips:
For code inserts
Power supply fuse:
1.6 AT
Installation data
Mounting:
For fixing onto top-hat rail
(35 × 15 mm or
35 × 7,5 mm) acc. to EN 50 022
Mounting position:
Any
Standards
Protection
(acc. to IEC 529
resp. EN 60 529)
IP 20
Test voltages:
3.7 kV, Power supply versus
measuring output and measuring
input
2.3 kV, all outputs versus each other
and all inputs versus each other
6. Mechanical coding of the backplane
The user must code the SIRAX BP 902 back-
plane for the module in use!
Otherwise there is a danger of plug-in
modules being exchanged.
To avoid the possibility of inserting the wrong SIRAX module
by mistake, each type of device has its own unique code.
Plug the sets of code (standard accessories) into the loca-
tions given in Table 1 in columns C to M into the coding strip
of the backplane.
36
or
2
acc. to
2
Table 1: Coding of the backplane
Instrument types
Works
(SIRAX
set-
plug-in module)
tings
A
B
X
X
V 644-6
X
X
SV 824-6
X
X
SD 810-6.1
(14V)
X
X
SD 810-6.2
(18V)
X
X
TV 808-61/-62
X
X
TV 808-615/6/7/8
X
X
TI 807-6
(non-Ex)
X
X
TI 807-6
(output Ex)
X
X
TI 807-6
(input Ex)
X
X
SI 815-6
X
X
B 811-6
X
X
C 402-6
X
V 606-6
X
X in columns C to M means:
- acc. to type - sets of code must be inserted in these positions
in the coding strip for the particular type of device.
X in column A:
Ex versions of the backplane are supplied ex works with a set of
code already inserted in position A of the coding strip.
X in column B:
All backplanes are supplied ex works with a set of code fitted in
position B of the coding strip. (It prevents SIRAX plug-in modules
with a low power supply from being inserted in slots with a high
power supply).
6.1 Coding example for one slot
Figure 3 shows an example of the coding for a SIRAX
V 644 with intrinsically safe ignition protection [EEx] ia IIC for
85...230 V AC. According to Table 1, sets of code are have
to be inserted at positions C, E and M.
Coding comb
Snap off sets of
with 12 sets of
code that are
codes
not needed
(standard
accessories of
the plug-in
module)
Fig. 3. Coding example SIRAX V 644, order code 644-64.
Coding peg positions
Code positions to be set
by the user
C
D E
F
G
H
I
K
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Insert the three remaining
sets of code at positions C,
E and M and snap off the
comb
Coding strip
A
A
Coded in
B
B
works
C
C
D
D
E
E
F
F
G
G
Coded by
H
the user
H
I
I
K
K
L
L
M
M
= With set of
code
= Without set
of code
L
M
X
X
X
X
X
X
X
X
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