Endress+Hauser FEC 12, Руководство по эксплуатации

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2 Installation
This section describes the electrical connection of the electronic insert. See Section 6
for instructions on replacing the electronic insert.
2.1 Electrical Connection
Insert the power cable through the cable
entry on the probe housing. Unscreened
or general purpose multi-core cable can
be used as the connecting cable. If
strong electromagnetic interference
occurs due to, e.g. machinery or radios,
then screened cable, grounded at the
probe end, should be used. Connect the
screening to the ground terminal on the
probe housing.
The power cable is connected to
Terminals 1 - and 2 + of the electronic
insert. The electronic insert has built-in
polarity protection. The black ground wire
in the probe is always connected to
Terminal 3.
Warning!
•
When using the probe in explosion-hazardous areas, ensure that the type and
routing of the intrinsically safe power and signal line is in accordance with the
certificate and local regulations.
•
See the certificate of conformity for maximum permissible values for capacitance
and inductance.
Note!
After connection, ensure that the cover is screwed down securely and that the cable
gland of the probe housing is screwed tight.
1
3 4 5
FEC 12
✔
✔
1 2
- +
Fig. 3
Connecting the
FEC 12 electronic insert to the
power supply
4...20 mA
EX EX
min 230
Ω
230
Ω
min
1
3 4 5
FEC 12
✔
✔
1 2
I
O
I
O
I
O
transmitter
power supply unit
Control room
Not permitted
with protection
Ex d
Field
follow-up units or e.g.
communications resistor
Fig. 4
Connecting the handheld terminal
to the load or power cable
Warning!
Note!
2 Installation Electronic insert FEC 12 (HART)
4 Hauser