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

Liquicap M FTI51, FTI52
Endress+Hauser
4.8

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 failsafe mode (MIN) / (MAX) and the point level adjustment are configured on the
Nivotester.
Power supply
Supply voltage: 9.5 to 12.5 V DC
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 switching unit Nivotester 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 on Seite 38 "Operation".
This will ensure that you do not accidentally
trigger any processes by switching on the supply
voltage.
3. Switch on the supply voltage.
PFM PFM
16 mA 16 mA
8 mA 8 mA
0 mA 0 mA
Frequency: 17 to 185 Hz
1 2
EEx ia
PFM
– +
11 12
d4 d2
Wiring
t t
TI418F52
E X
E X
Nivotester
FTC325
FTC625
FTC470Z
FTC471Z
TI418F53
35