Endress+Hauser Levelflex M FMP41C Operating Instructions Manual page 22

Wiring
22
Wiring with M12 connector
Before connection please note the following:
"
●
PROFIBUS devices are marked on the nameplate (1). The
voltage is determined by the PROFIBUS standard and the
Caution!
desired safety concept. (see chapter 4.3).
●
Connect potential matching line to transmitter earth terminal
before connecting up the device.
●
Tighten the locking screw:
It forms the connection between the probe and the housing
earth potential.
When you use the measuring system in hazardous areas, make sure you comply with
national standards and the specifications in the safety instructions (XA's).
Make sure you use the specific cable gland.
-
On devices supplied with a certificate, the explosion protection
is designed as follows:
●
Housing F12 - Ex ia:
Power supply must be intrinsically safe.
●
The electronics and the current output are galvanically
separated from the antenna circuit.
The Levelflex M is connected as follows:
●
Insert plug (2) into bushing (3).
●
Screw firmly
●
Ground the device according to the desired safety concept.
Cable specification PROFIBUS
Twisted, screened pairs must be used. The following specification must be met for explosion
hazardous application (EN 50020, FISCO model):
• Loop-resistance (DC): 15 to 150 Ω/km
• Specific inductance: 0.4 to 1 mH/km
• Specific capacitance: 80 to 200 nF/km
The following cable types can be used, for example
Non-Ex-area:
• Siemens 6XV1 830-5BH10
• Kerpen CEL-PE/OSCR/PVC/FRLA FB-02YS(ST)YFL
• Belden 3076F
Ex-area:
• Siemens 6XV1 830-5AH10
• Belden 3076F
• Kerpen CEL-PE/OSCR/PVC/FRLA FB-02YS(ST)YFL
Connectors
For the versions with a connector, the housing does not have to be opened for connecting the signal
line.
PIN assignment for M12 connector
4
+
1
–
3
nc
2
A0011175
Levelflex M FMP41C PROFIBUS PA
ENDRESS+HAUSER
LEVELFLEX-M
Order Code:
Ser.-No.:
LN= PN=
1
Profibus PA
Foundation Fieldbus
90 ... 253 V AC 1VA
10,5 ... 32 V DC 1W
16 ... 3 V DC 0,8W
4 ... 20 mA HART 2-wire
4-wire
TA > 70°C : t >85°C
Dat./Insp.:
3 2
PIN Meaning
1 Signal +
2 Not assigned
3 Signal –
4 Earth
Made in Germany
D-79689 Maulburg
IP68 / NEMA 6P
if modification
Patents
X =
see sep. label
D01301-A
L00-FMP40xxx-04-00-00-en-007
Endress+Hauser