2.5 Connection
General notes Cerabar S is loop-powered transmitter (type 111) with Foundation Fieldbus output. Note
the following before connecting up:
•
Turn off the power before connecting up.
•
Connect the external ground terminal of the transmitter to the plant grounding
system before connecting up.
Power The Cerabar S has the following power requirements:
I = 10.5 mA ± 1 mA
Non-Ex: U = 9...32 VDC
Ex: U = 9…24 VDC
Cable Twisted, shielded pairs must be used. The cable specifications can be taken from the
FF specification or IEC 61158-2. The following have been found suitable:
Non-Ex-area: Siemens 6XV1 830-5BH10,
Belden 3076F,
Kerpen CEL-PE/OSCR/PVC/FRLA FB-02YS(ST)YFL.
Ex-area: Siemens 6XV1 830-5AH10,
Belden 3076F,
Kerpen CEL-PE/OSCR/PVC/FRLA FB-02YS(ST)YFL
Screening General information on wiring can be found at the Fieldbus Foundation website:
www.fieldbus.org. For maximum protection against electromagnetic interference, e.g.
when the bus is operating near frequency converters, it is recommened that high integrity
potential bonding be provided between the housing and the cable screening.
The external ground terminal on the transmitter must be connected to ground.
The continuity of the cable screening between tapping points must be ensured.
The screening must be grounded at each end of the cable.
If there are large differences in potential between grounding points, the grounding should
run via a capicitor that is suitable for high frequency use
(e.g. ceramic 10 nF/250 V~).
ENDRESS+HAUSER
Made in Germany
Maulburg
CERABAR
Order Code PMC731-R11P1F11R1
Ser.-No. 4FY0832
Material AL203 CRN-STEEL VITON IP 65
P –1...10 bar
Pmin. 500 mbar
Pmax. 40 bar U = 9…32VDC
Foundation Fieldbus
1
2
3
+
0004
Foundation Fieldbus
FF FF
cable gland
Nameplate
external
ground
connection
compartment
BA211Y23
ground
terminal
Figure 2.11
Cerabar S connection
compartment and nameplate
2 Installation Cerabar S FF
14 Endress+Hauser
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