Electrical Connections - Camille Bauer SIRAX V 644 Mode D'emploi

7. Electrical connections

The transmitter SIRAX V 644 is plugged onto a backplane
BP 902. A 96 pin connector (Model C, DIN 41 612) establishes
the electrical connections between the transmitter and the
backplane. The pin connections can be seen from Fig. 6.
Please refer to our backplane instructions for the back-
plane wiring.
7.1 Alternative measurement connections
Make sure that the cables are not live when
making the connections!
The 230 V power supply and 250 V contact
output is potentially dangerous!
In the case of "Intrinsically safe" explosion-
proof versions [EEx ia] IIC, the supplementary
information given on the type examination
certification, the EN 60 079-14, and also
local regulations applicable to electrical
installation in explosion hazard areas must
be taken into account.
Also note that, ...
... the data required to carry out the prescribed
measurement must correspond to those
marked on the nameplate of SIRAX V 644
( measuring input M,
puts A1 and A2,
output contact K, see Fig. 6)!
... the total loop resistance connected to the
output (receiver plus leads) does not exceed
the maximum permissible value R
"Measuring output" in Section "5. Technical
data" for the maximum values of R
... the measurement input and output cables
should be twisted pairs and run as far as pos-
sible away from heavy current cables!
In all other respects, observe all local regulations
when selecting the type of electrical cable and
installing them!
26
measuring out-
power supply H and
max. see
ext.
!
ext.
Back
c b a
1
2
3
4
5
6
7
8
Ni 100
14
(+) ~
(–) ~
20
–
26
27
+
28
29
–
30
31
+
32
Fig. 6. Plug arrangement seen from the rear of SIRAX V 644.
Legend for Fig. 6
M = Measured variable / measuring input,
Terminal allocation acc. to the measuring mode
and application, see "Table 5: Measuring input"
A1 = Output signal / measuring output
A2 = 2nd output (field indicator)
K = Output contact for open-circuit sensor supervision
or for monitoring a limit GW (see Table 6)
H = Power supply
Ni 100 = Compensating resistor Ni 100 for plugging onto
backplane BP 902
M
Relay
H
c27 c29 c31
A1
K
A2
Energized: c31– c29
De-energized: c27– c29