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

Electrical connection
32
4. Switch on the supply voltage.
5.3.5

SIL2 / SIL3 electronic insert FEI55

The two-wire DC connection should, if possible, be connected as follows:
• to programmable logic controllers (PLC)
• 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 to 16 mA.
Power supply
• Supply voltage: 11 to 36 V
• Power consumption: < 600 mW
• Reverse polarity protection: yes
• Separation voltage: 0.5 kV
Signal on alarm
The output signal on power failure or in the event of device failure: < 3.6 mA
Connectable load
• U :
max
• 11 to 36 V for non-hazardous area and Ex ia
DC
• 14.4 to 30 V for Ex d
DC
• I = 16 mA
max
Do not switch on the supply voltage until you have learned about the device functions
as described in section "Operation operation" →  36. This will ensure that you do
not accidentally trigger any processes by switching on the supply voltage.
Connecting the FEI55
1. Connect the FEI51 according to the schema.
2. Tighten the cable gland.
3. Set the function switch to position 1.
4. Switch on the supply voltage.
DC
1 2
-
Ex ia
.
— +
Liquicap M FTI51
A0042391
Endress+Hauser