3-Wire Electronic Insert Fei53 - Endress+Hauser Liquicap M FTI51 Operating Instructions Manual

Liquicap M FTI51
Endress+Hauser
Power supply
• Supply voltage: 10 to 55 V
• Ripple: maximum 1.7 V, 0 to 400 Hz
• Current consumption: < 20 mA
• Power consumption without load: maximum 0.9 W
• Power consumption with a full load (350 mA): 1.6 W
• Reverse polarity protection: yes
• Separation voltage: 3.7 kV
• Overvoltage category: II
Signal on alarm
The output signal on power failure or in the event of device failure: I
Connectable load
• Load switched via transistor and separate PNP connection: maximum 55 V
• Load current: maximum 350 mA cyclical overload and short-circuit protection
• Residual current: < 100 µA with transistor blocked
• Capacitance load:
• maximum 0.5 µF at 55 V
• maximum 1 µF at 24 V
• Residual voltage: < 3 V for transistor switched through
Do not switch on the supply voltage until you have familiarized yourself with the
device functions as described in the section "Operation option" →  36. This will
ensure that you do not accidentally trigger any processes by switching on the supply
voltage.
Connecting the FEI52
L+ Power input +
L- Power input -
F Fuse
R External load: I =350 mA, U
max
1. Connect the FEI52 regarding to the schema.
2. Tighten the cable gland.
3. Set the function switch to position 1.
4. Switch on the supply voltage.
5.3.3

3-wire electronic insert FEI53

The 3-wire DC connection is used in conjunction with the Nivotester switching device
FTC325 3–WIRE from Endress+Hauser. The switching device' s communication signal
operates at 3 to 12 V .
DC
DC
1 2 3
( )
+
F
0.5A
R
L+ L—
= 55 V
max DC
Electrical connection
< 100 µA
R
A0042388
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