Liquipoint T FTW 31, FTW 32
Endress + Hauser 9
Power supply
Electrical connection
(wiring diagrams)
Compact instrumentation with FEW 52
Transistor circuit for load
The load connected to terminal 3 is switched by a transistor, contactless and therefore without
bouncing. In normal switching status, terminal 3 has a positive signal.
The transistor is blocked in the event of a level alarm or a power failure.
Protection against voltage peaks
When connecting a device with high inductance, always connect a voltage limiter.
L00-FTW3xxxx-04-05-xx-en-001
Connecting the FEW 52 electronic insert.
– F: Fine-wire fuse 500 mA, semi-time lag
– M: Ground connection to protective earth
Power supply (FEW 52)
•
Supply voltage: U= 10.8 V...45 V
•
Load connection: open collector; PNP
•
Switching voltage: max. 45 V
•
Connected load, continuous: max. 200 mA
•
Protected against reverse polarity
Power consumption
•
P < 1.1 W
Current consumption
•
I < 25 mA (without load)
(+)
FEW 52
L+ L–
F
R
–
123
M
Mains
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