Pepperl+Fuchs LC20-2-DR User Manual

Loop detector

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104

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Germany: [phone]Pepperl+Fuchs Group

Refer to "General Notes Relating to Pepperl+Fuchs Product Information".

USA: [phone] Singapore: [phone]

www.pepperl-fuchs.com [e-mail] [e-mail]

[e-mail]

LC20-2-DR 12-24VAC/DC

Sensor system for vehicle detection

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Complete control interface for inductive loops laid beneath the

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surface
Reliable detection with long service life

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Boost function for increasing sensitivity

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Test function

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Version with 2 loop channels

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Version with direction detection

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Sensor system for detecting vehicles, two loops, plug-in base mounting, 24 VAC/DC

Function

In combination with wire loops laid in the floor, loop detectors form a universal sensor system for detecting vehicles. When vehicles drive onto the
loop, the resonance frequency changes. Intelligent automatic frequency selection (AFS) reduces setup time and simplifies the installation of
complex multi-lane entrances. The evaluation process automatically and cyclically adjusts to the respective loop, so that changes in loop
inductance due to temperature, humidity or component ageing are automatically compensated.

Dimensions

Technical Data

General specifications

Adjustment range Sensitivity ΔL/L 4x adjustable on the front panel

Function principle Inductive loop

Marking CE

Presence time One hour for 3 % ΔL/L and option for permanent presence

Self-tuning range 20 μH ... 1500 μH

Operating frequency 4x adjustable on the front panel: 12 kHz ... 80 kHz (with AFS switched off)

Operating mode Pulsed and continuous signal

Indicators/operating means

Function indicator 1 x red LED: Power supply/Status , 2 x green LED: Channel status

Control elements DIP-switch , Refer to the documentation for functions

Release date: 2020-10-08 Date of issue: 2020-10-08 Filename: 70100660_eng.pdf

0.01 % ... 0.1 % with ASB overwrite option

1

123456789101112

+

−

n. c.

Channel 2 relay

Channel 1 relay

Channel 1
loop

Channel 2
loop

DIN Mounting Rail Socket

Function

1

Power supply

Channel 1 loop

2 Channel 1 loop

12 V - 24 V ±10 % DC/AC

Twist pair 1 + 2

Channel 2 loop

Channel 2 loop

Twist pair 4 + 5

3 Earth

4

5

12

6 n. c.

7

8

9

10

11

Channel 2 relay

Channel 2 relay

Channel 1 relay

Channel 1 relay

−
+

Pin

Assignment

Loop detector LC20-2-DR 12-24VAC/DC

Germany: [phone]Pepperl+Fuchs Group

Refer to "General Notes Relating to Pepperl+Fuchs Product Information".

USA: [phone] Singapore: [phone]

www.pepperl-fuchs.com [e-mail] [e-mail]

[e-mail]

Technical Data

Switching state LED

Electrical specifications

Operating voltage U

No-load supply current I

Power consumption P

Input

Number of channels 2

Output

Signal output One configurable relay output per channel

Switching current Relay outputs 1 A at 230 V AC

Pulse length 150 ms or 250 ms (selected via switch)

Response time 200 ms ... 300 ms

Directive conformity

Radio and telecommunication terminal
equipment

Approvals and certificates

FCC approval FCC 47 CFR Part 15

Ambient conditions

Operating temperature -40 ... 70 °C (-40 ... 158 °F)

Storage temperature -40 ... 70 °C (-40 ... 158 °F)

Relative humidity max. 90 % , non-condensing

Mechanical specifications

Degree of protection IP30

Connection 2 x 6 plug-in screw terminals ≤1.5 mm

Material

Housing ABS, anthracite

Installation DIN mounting rail

Mass 250 g

12 ... 24 V AC/DC ± 15%

B

∅ 40.17 mA

0

∅ 0.64 VA

0

2014/53/EU

2

Connection Assignment

Release date: 2020-10-08 Date of issue: 2020-10-08 Filename: 70100660_eng.pdf

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