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Binary level sensor

LMT0xA

17

8 Operation

After power-on the device is in the operating mode. It carries out its measurement and evaluation
functions and generates output signals according to the set parameters.

u

Check whether the unit operates correctly.

8.1 Switching states and LED indicators

The table shows the factory settings. In this state OUT1 = Hno and OUT2 = Hnc.

Operating status

LEDs

OUT1

OUT2

Unit ready for operation, no medium detected

green

OFF

ON

Unit ready for operation, medium detected

yellow

on

off

No operating voltage

off

off

off

Short circuit output 1

flashing yellow

-

1)

Short circuit output 2

flashing yellow

1)

-

Error / failure

-

OFF

OFF

Teach operation

(

Ò

 Full adjustment via the teach input) and (

Ò

 Changing the

output function)

Fault during the teach operation

LEDs are flashing green/yellow with 8Hz.

1)

 according to the level

The LEDs always indicate the switching status of output OUT1 (exception: teach operation (

Ò

Parameter setting via the teach input)).

8.2 System events IO-Link

Code

Type

Description

20480 d / 50 00 h

Error

Hardware fault in the unit.

u

Replace device

25376 d / 63 20 h

Error

Parameter error

u

Verify the data sheet and the values

30480 d / 77 10 h

Error

Short circuit

u

Check the installation

36350 d / 8D FE h

Warning

Test event. Event appears by setting index 2 to value 240. Event disappears
by setting index 2 to value 241

36351 d / 8D FF h

Warning

Test event. Event appears by setting index 2 to value 242. Event disappears
by setting index 2 to value 243

GB

Summary of Contents for LMT0 A Series

Page 1: ...Operating instructions Binary level sensor LMT0xA 80301827 00 03 2021 GB...

Page 2: ...9 5 5 1 Installation LMT01A hygiene compliant 10 5 5 2 Installation LMT03A and LMT04A 10 6 Electrical connection 12 7 Parameter setting 13 7 1 IO Link communication interface 13 7 2 Parameter setting...

Page 3: ...unit packaging or at www ifm com 1 1 Symbols used Requirement Instructions Reaction result Designation of keys buttons or indications Cross reference Important note Non compliance may result in malfun...

Page 4: ...the EU directive 94 9 EC annex VIII ATEX group II equipment category 3D 3G If no operating instructions Ex protection related part or EC declaration of conformity are supplied with this product in th...

Page 5: ...253 mm G1 2 1 Sensitivity adjustable Parameter setting 2 Probe length measured from conical sealing edge Technical data 3 2 Restriction of the application area Not suitable for abrasive media e g quar...

Page 6: ...tip generates an electrical field that is influenced by the level The nature of the medium as well as build up or foam have different electrical properties that are used for the evaluation 4 2 Other f...

Page 7: ...Installation preferably in closed metal tanks or pipes The sensor must be in electrical contact with the metal process connection When installed in plastic tanks there may be deterioration caused by...

Page 8: ...ive and viscous media and media prone to sedimentation or build up the installation positions 1 are only suitable to some extent Residues might be detected as level 5 2 2 Unit types with long probe In...

Page 9: ...unit in the system complies with EHEDG guidelines u Use self draining installation u Only use process adapters permitted according to EHEDG with special seals required by the EHEDG position paper The...

Page 10: ...he thread using a suitable lubricating paste which has been approved for this application u Screw the sensor into the respective process connection and tighten it Maximum tightening torque 20 25 Nm u...

Page 11: ...t hygienic zero leak using PEEK gasket 3 4 1 3 4 3 Fig 8 LMT seal PEEK 1 Green flat seal 3 PEEK sealing ring beige accessory E43323 4 Black flat seal E43323 u If needed replace green flat seal 1 on de...

Page 12: ...Normal operation factory setting L 1 BN 2 WH 4 BK 3 BU OUT1 OUT2 L 4 3 2 1 Teach operation L 1 BN 2 WH 4 BK 3 BU IN OUT2 L 4 3 2 1 Pin Core colours 1 BN brown 2 WH white 3 BU blue 4 BK black OUT1 PNP...

Page 13: ...nfiguration of the unit detailed information about process data structure diagnostic information parameter addresses and the necessary information about the required IO Link hardware and software can...

Page 14: ...nimum hysteresis 2 Reference values Aqueous water based media SPx 62 rPx 54 Media with low water content SPx 35 rPx 29 Oils fats powders SPx 8 rPx 5 ou1 ou2 ou1 ou2 output function for OUT1 OUT2 Hno h...

Page 15: ...he teach input The teach input must be activated u This requires previous configuration via IO Link parameter ou2 tch Output OUT2 must be configured as hysteresis function Hnc or Hno If the window fun...

Page 16: ...ellow with 8 Hz w The unit returns to the operating mode with unchanged settings Possible faults Time error teach time too long too short Internal sensor signal not clear Wrong output function Paramet...

Page 17: ...lure OFF OFF Teach operation Full adjustment via the teach input and Changing the output function Fault during the teach operation LEDs are flashing green yellow with 8Hz 1 according to the level The...

Page 18: ...tant to ingress and without dead space u It is not possible to repair the unit u In case of return shipment ensure that the unit is free from soiling especially from dangerous and toxic substances u F...

Page 19: ...y setting LMT0xA User settings SP1 8 rp1 5 ou1 Hno SP2 8 rp2 5 ou2 Hnc FOU1 OFF FOU2 OFF dS1 0 0 dS2 0 0 dr1 0 0 dr2 0 0 P n PnP dFo 0 0 Percentage values refer to the process value Parameter setting...

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