IFM LK81 Series Operating Instructions Manual Download Page 36

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16 Applications

16.1 Storage tank

Level control and min / max monitoring with 4 switching outputs.

Replaces 4 float switches.

Configuration of the switching outputs 1...4
SP1

maximum value exceeded → alarm

ou1

hysteresis function, normally closed (Hnc)

SP2

upper preset value exceeded

→

finish refilling

ou2

hysteresis function, normally open (Hno)

SP3

below lower preset value

→ start refilling

ou3

hysteresis function, normally closed (Hnc)

SP4

below min. value

→ alarm

ou4

hysteresis function, normally open (Hno)

rP1...4 each slightly below SPx to suppress wave movements

SP1

SP2

OUT1

Hnc

OUT2

Hno

SP3

SP4

OUT3

Hnc

OUT4

Hno

OFS

XX.X

Summary of Contents for LK81 Series

Page 1: ...Operating instructions Electronic level sensor LK81xx UK 80264351 01 11 2018...

Page 2: ...5 2 4 Offset for indicating the real level in the tank 11 5 2 5 Defined state in case of a fault 11 5 2 6 IO Link function 11 6 Installation 12 6 1 Installation instructions for operation with overflo...

Page 3: ...nse of the outputs in case of a fault FOUx 27 10 3 8 Configure display diS 27 10 3 9 Reset all parameters to factory settings rES 27 11 Notes on parameter setting via IO Link 28 12 Operation 28 12 1 O...

Page 4: ...ing applications and environmental conditions without any restrictions Only use the product for its intended purpose Functions and features Only use the product for permissible media Technical data If...

Page 5: ...e unit is not suitable for acids and alkalis hygienic and electroplating applications highly conductive and adhesive media e g glue shampoo granulates bulk material use in grinders increased risk of f...

Page 6: ...nit Observe the distances x u and c x min 4 0 cm u min 1 0 cm c max 14 0 cm Fig 4 1 OP c Ground sensor and tank via an electrical connection 7 Observe the parameter setting sequence MEdI OIL 2 10 2 3...

Page 7: ...d level b A distance a2 greater than 5 0 cm has to be observed between maximum level b and mounting element Observe the parameter setting sequence MEdI Auto 10 2 3 OFS u e g u 1 0 cm 5 2 4 SP1 Set the...

Page 8: ...oils a correspondingly lower signal The active measuring range of the sensor probe is composed of 16 capacitive measuring segments They generate measurement signals depending on the degree of coverage...

Page 9: ...ention is available Automatic media detection can only function properly under certain conditions e g compliance with special mounting specifications restrictions for operation and maintenance 5 2 2 N...

Page 10: ...on of the current level change every second 5 2 3 Display and switching functions The unit displays the current level selectable in cm or inches The set unit of mea surement and the switching status o...

Page 11: ...parameter however is correctly transmitted via IO Link and can therefore be taken into account More information 5 2 6 5 2 5 Defined state in case of a fault In case of a fault a state can be defined f...

Page 12: ...ed IO Link hardware and software can be found at www ifm com 6 Installation CAUTION The housing can heat up considerably risk of burns Cover to prevent accidental injury Fig 6 1 OP c L M c probe lengt...

Page 13: ...ve the minimum distances according to Fig 6 1 and Table 6 2 Observe the notes on the integrated overflow prevention OP The overflow prevention OP must 1 be below the mounting element 2 be set at a min...

Page 14: ...xceed I1 see Table 6 3 Ensure that the maximum level b1 is not exceeded after completed installation see Table 6 3 Observe further minimum distances according to Table 6 4 Fig 6 2 A I1 c I2 b1 a1 x u...

Page 15: ...n b2 L c a2 without offset Observe further minimum distances according to Table 6 4 Fig 6 3 c b2 L u a2 x c outside length max outside length Table 6 1 a2 minimum distance between mounting element and...

Page 16: ...least be 12 cm 4 8 inches Install sensor in the centre For mounting in metal pipes the inside pipe diameter d must be at least Table 6 5 MEdI CLW 1 MEdI CLW 2 OIL 1 MEdI OIL 2 Auto cm inch cm inch cm...

Page 17: ...2 1 4 5 7 3 OUT 4 OUT 1 OUT 3 L OUT 2 L BU BK WH GY PK VT BN 3 4 2 5 6 7 1 Pin Socket ifm to DIN 47100 1 BN brown white 2 WH white brown 3 BU blue green 4 BK black yellow 5 GY grey grey 6 PK pink pin...

Page 18: ...using connection see drawing and a short piece of cable with a core cross section of min 1 5 mm2 When using metal tanks the tank wall serves as the machine earth For plastic tanks a counter electrode...

Page 19: ...is switched LED 7 switching status OUT2 on if output 2 is switched LED 8 switching status OUT1 on if output 1 is switched 9 Mode Enter button selection of the parameters and acknowledgement of the pa...

Page 20: ...4 5 14 5 M SP4 FH4 S M M M S 20 0 20 0 rP4 FL4 S M S M 19 5 19 5 M dS1 dS2 0 0 Hno Hno ou3 ou4 Hnc 0 0 dr1 0 0 dr2 0 0 dS3 0 0 dr3 0 0 dS4 0 0 dr4 0 0 M S M S M S M S M S M S M S M S M S M S M S M S M...

Page 21: ...step by step by pressing the button once or continuously by keeping the button pressed 3 Mode Enter Set Briefly press Mode Enter confirmation The parameter is displayed again the new parameter value b...

Page 22: ...on cOP the unit must be installed in the tank 10 2 Basic settings Setting ranges of all parameters 13 Factory settings of all parameters 15 10 2 1 Set unit of measurement uni Enter uni before entering...

Page 23: ...swarf The settings OIL 1 and OIL 2 suppress a bottom layer of higher dielectric water or swarf which is a few cm high If no oil layer is present or if it is very thin the bottom layer is detected With...

Page 24: ...pty The tank may be partly filled Make sure that the overflow prevention OP is not covered by the medium Observe the minimum distance between the overflow prevention OP and the level Table 10 1 Select...

Page 25: ...OP value an adjust ment cOP must be carried out each time MEdI or OP was changed In this case is displayed The installation position height orientation was changed The connection between the sensor a...

Page 26: ...then rPx Select SPx and set the value at which the output is set SP1 SP4 Select rPx and set the value at which the output is reset rP1 rP4 rPx is always smaller than SPx The unit only accepts values...

Page 27: ...ches ON in case of a fault OFF Output switches OFF in case of a fault A fault is for example defective hardware signal quality too low Overflow is not considered to be a fault 12 3 10 3 8 Configure di...

Page 28: ...tment has been carried out successfully does the unit revert to the cyclical process data transmission After a factory reset button Restore Factory Settings the device reboots and the factory settings...

Page 29: ...n C Loc The unit is temporarily locked Parameter setting via IO Link is active temporary locking S Loc Unit is permanently locked via software This locking can only be removed with a parameter setting...

Page 30: ...Lower the level if possible Clean the probe Observe the notes on installation Correct the position of the overflow prevention OP Repeat the adjustment Deactivate OP 5 2 2 SCx LEDs 5 8 Flashing short c...

Page 31: ...1 50 19 5 15 5 6 1 31 0 12 2 46 18 1 14 3 5 6 28 5 11 2 42 16 7 13 0 5 1 26 1 10 3 39 15 2 11 8 4 7 23 6 9 3 35 13 8 10 6 4 2 21 2 8 3 31 12 3 9 4 3 7 18 8 7 4 28 10 9 8 2 3 2 16 3 6 4 24 9 5 6 9 2 7...

Page 32: ...13 3 1 Definition from the cover Required distance y of the overflow prevention OP from the cover is defined Without offset OFS 0 OP L c y With offset OFS u OP L c y u or OP B y Example LK8122 c 3 0...

Page 33: ...FHx and rPx FLx Table 12 3 LK8122 LK8123 LK8124 cm inch cm inch cm inch SPx FHx 2 5 20 0 1 0 7 8 3 5 39 0 1 4 15 4 6 59 2 5 23 5 rPx FLx 2 0 19 5 0 8 7 6 3 0 38 5 1 2 15 2 5 58 2 0 23 0 Step incremen...

Page 34: ...evention MEdI Auto or MEdI C or O and OP OFF The unit must be reinitialised in the following cases switch the operating voltage briefly off and on again after all maintenance operations after cleaning...

Page 35: ...2 LK8123 LK8124 SP1 6 0 12 0 18 rP1 5 5 11 5 17 SP2 10 0 19 5 29 rP2 9 5 19 0 28 SP3 15 0 29 5 44 rP3 14 5 29 0 43 SP4 20 0 39 0 59 rP4 19 5 38 5 58 OP 20 4 40 7 61 MEdI CLW 1 cOP rES ou1 3 Hno ou4 Hn...

Page 36: ...function normally closed Hnc SP2 upper preset value exceeded finish refilling ou2 hysteresis function normally open Hno SP3 below lower preset value start refilling ou3 hysteresis function normally c...

Page 37: ...ow wire break If the level reaches SP2 output 2 switches upper preset value reached finish refilling If the level is below SP3 output 3 switches below lower preset value start refilling If the level i...

Page 38: ...lower value submersible pump OFF ou3 hysteresis function normally closed Hnc rP1 3 each slightly below SPx to suppress wave movements L SP1 1 0 OUT1 Hnc 1 0 OUT2 Hno SP2 SP3 t 1 0 OUT3 Hnc OFS XX X A...

Page 39: ...39 UK More information at www ifm com...

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