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Design und Spezifikationen können ohne Ankündigung geändert werden

Installationsanleitung 5850-020

www.baumer.com/process

R

74 - 03

Level Switch LFFS 

WARNING

This product contains no replaceable parts.
In case of malfunction the product must be shipped to Baumer for repair

Description

The Level Switch LFFS designed to detect levels in tanks, media 
separation and provide empty-pipe detection or dry-run protection for 
pumps.

A high frequency sweep signal is radiated from the sensor tip into the 
tank. The media will act as a virtual capacitor, which together with a 
coil in the sensor head, will form a circuit creating the switch point 
signal. This virtual capacity will depend of the di-electric value of the 
media.  
 
By means of the FlexProgrammer 9701 the output can be configured 
to either NPN, PNP or digital output signal. A damping of the output 
signal can be activated in case of a fluctuating media level, e.g. during 
tank filling.

The measurement is precise and unaffected by the mounting position 
in the tank.  In the Flex-software a compensation for foam, bubbles and 
condensate as well as viscous media can be set.

The Flex-software also features an adjustment facility making the user 
able to adjust the sensor to a specific media. 

The Level Switch LFFS measures liquids such as water and beer as 
well as viscous, sticky fluids, such as honey, youghurt, toothpaste and 
ketchup. Even dry medias can be measured, eg. sugar or flour. 

The Level Switch LFFS is resistent against CIP and SIP agents.

Hygienic installation is also possible with the comprehensive range of 
accessories, see the overview at page 6.

When the top cover is removed  

do not look directly at LED 

with unshielded eyes or  

damage to retina may occur !!

Safety instructions

This instrument is constructed and tested according to the current EU-
directives and packed in technically safe condition. In order to maintain 
this condition and to ensure safe operation, the user must follow the 
instructions and warnings given in this instruction.

During the installation local standards have to be observed. Ignoring 
the warnings may lead to severe personal injury or substantial damage 
to property.

The product must be operated by trained staff. Correct and safe 
operation of this equipment is dependent on proper transport, storage, 
installation and operation.

All electrical wiring must conform to local standards and the connec-
tion must be made according to the connecting diagrams.

Before switching on the power supply take care that other equipment 
is not affected. Ensure that the supply voltage and the conditions in the 
environment comply with the specification of the device. 

Before switching off the supply voltage check the possible effects on 
other equipment and the processing system.

Содержание LFFS

Страница 1: ... liquids such as water and beer as well as viscous sticky fluids such as honey youghurt toothpaste and ketchup Even dry medias can be measured eg sugar or flour The Level Switch LFFS is resistent against CIP and SIP agents Hygienic installation is also possible with the comprehensive range of accessories see the overview at page 6 When the top cover is removed do not look directly at LED with unsh...

Страница 2: ...nsor tip can see an ample amount of the metal shaft or welding part Tighten the union with a torque of Std version 20 25 Nm Sliding connection 25 30 Nm After Installation and Configuration Check the leak tightness of the sleeve Check the tightness of glands or M12 plugs Check the tightness of the cover Measuring principle The media acts as a virtual capacitor from the sensor tip to the metal shaft...

Страница 3: ...12 36 VDC or Sensor Output Teach in Case M12plug 1 4 2 3 M12 plug 1 Brown 2 White 3 Blue 4 Black To avoid unintended Teach In be aware not to connect the Teach In pin or expose it to any electrical noise during normal operation Washer Ring Kit for the Sliding Connection Mounting instructions 1 Clean the sliding shaft 2 Mount the smallest ring against the media as indicated 3 Tighten the G1 2 Hygie...

Страница 4: ...p The FlexProgrammer 9701 is a dedicated tool to configure all Baumer configurable Flex products Type No 9701 0001 complies FlexProgrammer Cable with 2 aligator clips Cable from FlexProgrammer to M12 plug for TE2 Cable from FlexProgrammer to M12 Plug for LFFS LBFS CPX USB cable CD with the FlexProgram software 1 2 Disconnect the power supply before connecting the FlexProgrammer 9701 to the Level S...

Страница 5: ...gs If Teach In for some reason do not succeed the Level Switch LFFS will enter Error State and reload factory settings automatically The factory settings can always be reloaded by connecting the terminal Teach In to VDC for more then 6 5 Secs A reloaded factory settings will be confirmed by pulsing light intensity 3 times Note If the media is sticky foamy powdery or in other ways leaving parts of ...

Страница 6: ...03 R 74 03 Accessories Overview CAM023 LFFS xx1 MAM02x xxx PM023 PM021 LAM020 1 VAM 023 PM025 PM022 x RAM020 2 RAM020 1 SAM020 051 1 Welding part 3A DN38 hygienic 81 26 916 Please refer to the data sheet FlexBar Accessories for this accessory Please refer to the data sheet Accessories Universal for these accessories LFFS xx3 4 LFFS xx2 Welding part 3A DN38 hygienic 81 26 928 ...

Страница 7: ...or ATEX approved products please refer to table 1 The working conditions for the sliding connection in different media temperatures and specified ambient temperatures can be found in curve 1 MediaTemperature versus External Length of Sliding Connection Curve 1 External length of sliding connection mm See figure 1 NB Std 3A DN38 35 mm extenal length External length of sliding connection Lumpy or st...

Страница 8: ...elevant The 3 A marked products conforms to the 3 A Sanitary Standard criteria Materials and surfaces fulfill the FDA demands and are certified by EHEDG EPDM O rings supplied with 3 A marked products are conform to Sanitary Standard Class II 8 milk fat max EPDM gaskets supplied with 3 A marked products are conform to Sanitary Standard Class I 8 milk fat max Level Switch LFFS example The FlexProgra...

Страница 9: ...75 W must be used Ex data Supply range 24 30 VDC Temperature class T1 T5 See table 1 Internal inductivity Li 10 µH Internal capacity Ci 33 nF Barrier data U 30 VDC I 0 1 A P 0 75 W Conditions for Ex Certification Table 1 Note 2 Provided that the sensor tip at the instrument is the only part in contact with the media Note 3 Max allowed media temperature 22 120VDC or 90 253 VAC NO COM NC PNP out A B...

Страница 10: ... prevailing guidelines for zone 20 without a barrier Ex data Supply range 12 5 30 VDC max 100 mA Temperature class T100 See table 1 External lamp Level Switch LFFS 12 5 30 VDC Ex nA IIT5 ATEX II 3G Installation Level Switch LFFS 12 5 30 VDC Remote Lamp A Level Switch LFFS 3xx is Ex nA II T5 ATEX II 3G approved for application in hasardous areas in accordance with the current EU directives The prod...

Страница 11: ...Seite 11 Design und Spezifikationen können ohne Ankündigung geändert werden Installationsanleitung 5850 020 www baumer com process ...

Страница 12: ...Seite 12 Design und Spezifikationen können ohne Ankündigung geändert werden Installationsanleitung 5850 020 www baumer com process 5850 020_EN 2011 09 14 This data sheet may only be reproduced in full ...

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