Connecting The Electronic Insert Fei55; Sil2/Sil3) - Endress+Hauser Liquicap M FTI51 Operating Instructions Manual

Wiring
34
4.7 Connecting the electronic insert FEI55 (8/16 mA;

SIL2/SIL3)

The two-wire DC connection should, if possible, be connected as follows:
• To programmable logic controllers (PLCs),
• to AI modules 4 to 20 mA in accordance with EN 61131-2
The point level signal is sent via an output signal jump from 8 mA to 16 mA.
Power supply
Supply voltage: 11 to 36 V DC
Power consumption: < 600 mW
Reverse polarity protection: yes
Separation voltage: 0.5 kV
Signal on alarm
Output signal on power failure or in the event of device failure: < 3.6 mA
Connectable load
• U = connection DC voltage:
– 11 to 36 V DC (non-hazardous area and Ex ia)
– 14.4 to 30 V DC (Ex d)
• I = 16 mA
max
Connect the FEI55 (8/16 mA) as follows:
1. Make the connection as shown in the
graphic.
2. Turn the cable gland until tight.
3. Set the function switch to position 1
(operation).
!
Note!
Do not switch on the supply voltage until you
have familiarized yourself with the device
functions as described on Seite 38 "Operation".
This will ensure that you do not accidentally
trigger any processes by switching on the supply
voltage.
4. Switch on the supply voltage.
Functional safety (SIL)
The electronic insert FEI55 meets the requirements of SIL2/SIL3 in accordance with IEC
61508/IEC 61511-1 and can be used in safety systems with corresponding requirements.
An exact description of the requirements in terms of functional safety can be found in
document SD278F/00.
Liquicap M FTI51, FTI52
1 2
E X
EEx ia
E X
– +
U– 11...36
e.g. PLC
Endress+Hauser
TI418Fen50