Namur Electronic Insert Fei58 - Endress+Hauser Liquicap M FTI51 Operating Instructions Manual

Electrical connection
34
11 The negative terminal in Nivotester FTC325
12 The positive terminal in Nivotester FTC325
1. Connect the FEI51 according to the schema.
2. Tighten the cable gland.
3. Switch on the supply voltage.
5.3.7

NAMUR electronic insert FEI58

The two-wire connection for a separate switching unit in accordance with NAMUR
specifications (IEC 60947-5-6), e.g. Nivotester FTL325N from Endress+Hauser.
Change in the output signal from high to low current in event of point level detection.
Additional function: test key on the electronic insert.
Press the key to breaks the connection to the isolating amplifier.
In the case of Ex d operation, the additional function can only be used if the housing is
not exposed to an explosive atmosphere.
When connecting to Multiplexer: set 3 s as the cycle time at least.
Power supply
• Power consumption:
• < 6 mW at I < 1 mA
• < 38 mW at I = 2.2 to 4 mA
• Interface connection data: IEC 60947-5-6
Signal on alarm
The output signal in the event of damage to the sensor: < 1.0 mA
Connectable load
• The technical data of the connected isolating amplifier as per IEC 60947-5-6 (NAMUR)
• The connection also to isolating amplifiers which have special safety circuits I > 3.0 mA
Do not switch on the supply voltage until you have learned about the device functions
as described in section "Operation option" →  38. This will ensure that you do not
accidentally trigger any processes by switching on the supply voltage.
Connecting the FEI58
1 2
-
Ex ia
PFM
.
— +
11 12
Liquicap M FTI51
A0050141
Endress+Hauser