Connecting The Electronic Insert Fei57S (Pfm) - Endress+Hauser Liquicap M FTI51 Operating Instructions Manual

Wiring
46
4.10

Connecting the electronic insert FEI57S (PFM)

The two-wire DC connection is used in conjunction with one of the following Nivotester switching
devices from Endress+Hauser:
• FTC325 PFM,
• FTC625 PFM (from SW V1.4),
• FTC470Z,
• FTC471Z
The PFM signal is between 17 and 185 Hz.
The changeover of fail-safe mode (MIN) / (MAX) and the level limit calibration take place on the
Nivotester.
Power supply
Supply voltage: 9.5 to 12.5 VDC
Power consumption: < 150 mW
Reverse polarity protection: yes
Separation voltage: 0.5 kV
Output signal
PFM 17 to 185 Hz (Endress+Hauser)
Connectable load
• Floating relay contacts in the connected Nivotester switching device FTC325 PFM,
FTC625 PFM (from SW V1.4), FTC470Z, FTC471Z
• For the contact load capacity, refer to the technical data of the switching device.
Connect the FEI57 (PFM) as follows:
1. Make the connection as shown in the graphic.
2. Turn the cable gland until tight.
!
Note!
Do not switch on the supply voltage until you have
familiarized yourself with the device functions as
described in chapter 5, "Operation". This will ensure
that you do not accidentally trigger any processes by
switching on the supply voltage.
3. Switch on the supply voltage.
Liquicap M FMI51, FMI52
PFM
16 mA
8 mA
0 mA
Frequency: 17 ...185 Hz
1 2 1 2
EEx ia EEx ia
PFM PFM
– – + +
1 1 1 1 12 12
z4 z4 d2 d2
t
L00–FMI5xxxx–05–05–xx–xx–005
FEI FEI57S 57S
E E X X
E E X X
Nivotester Nivotester
FTC325 FTC325
FTC625 FTC625
FTC470Z/471Z FTC470Z/471Z
L00–FTI5xxxx–04–05–xx–yy–003
Endress+Hauser