© KROHNE 03/2002 7.02241.21.
&RQWHQWV Safety information 2 Product liability and warranty 2 CE / EMC / Standards / Approvals 2 1 1.1 1.2 1.3 1.4 3 3 3 4 6 Product description Function and configuration Principle of operation Technical data Dimensions 2 Mounting 2.1 Mounting instructions 8 8 Electrical connection 3 3.1 Connection instructions 3.2 Wiring plan 10 10 11 4 4.1 4.2 4.3 Setup Switching status Switching point Functions chart 14 14 14 14 5 5.1 5.2 5.
1.1 3URGXFW GHVFULSWLRQ Function and configuration LS 4100/LS 4150 detect levels of liquids with a viscosity of 0.2 up to 10.000 mPa s and a density of ≥ 0.6 g/cm3. Modular construction enables their use in machines, plants, vessels and pipelines, even in applications severely limited in space. Typical applications are overfill and dry run protection. LS 4100 is optionally available with threads G 1 A and 1" NPT. The stainless steel housing (1.4571) is in protection class IP 67.
1.3 Technical data Housing Housing material Protection Torque on the hexagon Plug connection stainless steel 1.4571/ 316Ti IP 67 80 Nm 4-pole plug with status indication (illuminated ring) max. 1 x 1.5 mm2 Terminals Process connection LS 4100 - thread - material LS 4150 - thread - cone - Tri-Clamp - bolting - Tuchenhagen Varivent - hygienic connection with compression nut - hygienic connection with tension flange F40 PN 25 DN 32 PN 25 Tuning fork Material 1.
Electronics - General Integration time Measuring frequency Hysteresis approx. 0.5 s approx. 400 Hz approx. 4 mm with vertical installation Control lamp illuminated ring with two-colour LED for status indication green – output conductive red – output blocks Electronics - Transistor output (SW E72 T) Power supply Power consumption Output Load current Voltage loss Turn-on voltage Blocking current Protection class Overvoltage category Mode 10 … 55 V DC max. 0.
1.
LS 4100/LS 4150 03/2002 LS 4100/LS 4150 7
2.1 0RXQWLQJ Mounting instructions In principle, the level switch can be mounted in any position. The instrument must be mounted such that the tuning fork is at the height of the required switching point. Note the following installation instructions: Switching point The tuning fork is provided with lateral markings (notches, 25 mm from the fork tip), marking the switching point with vertical installation for the medium water.
Transport Do not hold level switch on the tuning fork. The tuning fork can be damaged. Polished version LS 4150 Treat instruments with polished tuning fork LS 4150 very carefully and do not touch the polished surface. Unpack LS 4150 directly before mounting. Insert LS 4150 carefully into the provided opening and avoid contact with vessel parts. Cable entries When mounting outside, on cooled vessels or in humid areas in which e.g.
3.1 (OHFWULFDO FRQQHFWLRQ Connection instructions Note Switch off the power supply before starting connection work. Remove the plug. Loosen the screw (7) and disassemble the plug. Lead the connection cable through the cable entry and connect the cables according to the following illustration. Fig. 3.1 1 Socket insert 2 Angle housing 3 Seal ring (3 pcs.
3.2 Wiring plan Floating transistor output (SW E72 T) Power supply: 10 … 55 V DC (for further information see the following connection examples as well as technical data) To determine the switching status of the transistor output (mode A/B), the supply cable (terminals 1 and 4) must be polarised respectively. Mode A Max. detection or overfill protection: - terminal 1: + - terminal 4: – Mode B Min.
The transistor switches a second, galvanically isolated voltage source to the binary input of a PLC or to an electrical load. Mode A UB UB UB UB For mode B you have to switch the polarity of terminals 1 and 4. NPN action PNP action Control of alternating current loads The transistor switches a galvanically separated alternating voltage 10 … 42 V AC to a load.
A/B-mode Mode A Max. detection, overfill protection Mode B Min. detection, dry run protection In mode A, terminal 3 remains free. Therefore do not connect a cable to terminal 3, not even up to the next junction box, since the cable can pick up interfering signals.
4.1 6HWXS Switching status The switching status can be checked with closed instrument by means of the illuminated ring in the upper part of the housing. By interchanging of the connection cables, you can modify the switching status of the transistor output (T). For the electronics version contactless electronic switch (C) you have to use a jumper in the plug between terminal 2 and 3 to modify the switching status. You can adjust the requested mode acc. to "4.3 Functions chart" (see "3.2 wiring plan").
'LDJQRVWLFV 5.1 Function test LS 4100/LS 4150 are equipped with an integrated test switch which can be activated magnetically. Proceed as follows to test the instrument: • • Make sure that the tuning fork is uncovered. Hold the test magnet (accessory) to the magnet symbol on the instrument housing (see fig. 5.1). The test magnet simulates a covering of the tuning fork. If the tuning fork is uncovered, the signal lamp of the level switch changes status.
5.2 Replacement of the electronics The removal of the electronics unit will damage the housing seal. Therefore only open the instrument if you want to insert a new electronics unit. To replace the electronics in case of failure, the instrument must not be removed. Proceed as follows to replace the electronics unit: • • • • • • • • • • Separate level switch from operating voltage. Loosen the plug (1), by screwing on the knurled ring.
,I \RX QHHG WR UHWXUQ D GHYLFH IRU WHVWLQJ RU UHSDLU WR .52+1( If the instrument has been operated with toxic, caustic, flammable or water-endangering liquids, you are kindly requested Your instrument has been carefully manufactured and tested. If installed and operated in accordance with these operating instructions, your instrument will rarely present any problems.
Notes 18 LS 4100/LS 4150 03/2002
Notes 03/2002 LS 4100/LS 4150 19
