2-Channel Rail Speed Sensor GEL 248 - Compact sensor with HTL-/TTL-output signals

Rail Speed Sensor Gel 248 - Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders Rail Speed Sensor GEL 248

Rail Speed Sensor Gel 248 - Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders Rail Speed Sensor GEL 248

Rail Speed Sensor Gel 248 - Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders Rail Speed Sensor GEL 248



General information

  • Application approved speed sensor based on magnetic measurement principle
  • Maintenance- and wear-free operation due to non-contact measurement of rotation
  • Safe detection of slow rotation from 0 Hz without pulse loss and for high-speed rotation up to 25 kHz
  • Suitable for ferromagnetic target wheels like toothed wheels targets, racks, slotted disks and sprocket wheels
  • Two channels shifted by 90 provide the direction of rotation
  • Robust and compact housing suitable for harsh application
  • Simple flange mounting

Features

  • Module target wheel 0.70 to 4.00
  • Measuring range 0 to 25 kHz
  • Temperature range -40 to +120C
  • Protection class IP 68
  • Type test according to EN 50155

Fields of application

  • 2-channel square-wave signals shifted by 90, HTL
  • 2-channel square-wave signals shifted by 90 and their inversed signals, HTL
  • 2-channel square-wave signals shifted by 90 and their inversed signals, 5 V TTL / RS 422

Output signals

  • 1-channel square-wave signals, inversed signals
  • 2-channel square-wave signals, 90-shifted, inversed signals, galvanically isolated

Technical data

Signal pattern V X T
Electrical Data
Supply voltage VS (reverse polarity protected) 10 to 30 V DC 5 V 10 %
Current consumption per channel IS (without load) ≤ 50 mA
Output signal (short circuit-proof) square-wave signals, HTL square-wave signals, TTL
Output signal level high (1) ≥ VS - 2 V ≥ 3.5 V
Output signal level low (1) ≤ 1.5 V ≤ 0.8 V
Output current per channel ≤ 20 mA
Input frequency (target wheel) 0 Hz to 25 kHz
Output frequency 0 Hz to 25 kHz
Duty (depends on measuring scale and air gap) 50 % 5 %
Phase shift 90 20
Slew rate (2 m cable) ≥ 10 V/s
Electromagnetic compatibility Industrial applications (EN 61000-1 to 4)
Insulation 500 V AC (EN 60439-1)
Mechanical data
Module m of target wheel 0.70 / 1.00 / 1.25 / 1.50 / 1.75 / 2.00 / 2.25 / 2.50 / 3.00 / 3.50 /4.00
Permissible air gap (for module m)
m = 0.70
m = 1.00
m = 1.50
m = 2.00
m = 2.50
m = 3.50
m = 4.00
0.2 to 0.8 mm
0.2 to 1.4 mm
0.2 to 1.8 mm
0.2 to 2.2 mm
0.2 to 2.8 mm
0.2 to 3.0 mm
0.2 to 3.5 mm
Width of target wheel ≥ 10 mm
Form of target wheel Involute gear as per DIN 867
Material of target wheel Ferromagnetic steel
Operating and ambient temperature -40 C to +120 C
Storage temperature -40 C to +120 C
Protection class IP 68
Vibration resistance 200 m/s2 (EN 60068-2-6)
Shock resistance 2000 m/s2 (EN 60068-2-27)
Type test EN 50155
Housing material of sensor Zinc
Weight of sensor (2 m cable) Approx. 150 g
Electrical Connection
Cable
Cable halogen free and screened
Cable outlet radial or lateral
Cable length
≤ 100 m
Cable diameter 5.5 mm 5.0 mm
Cable cross section 4 x 0.25 mm2 9 x 0.15 mm2
Cable type LK1062 LK1052
Bending radius
25 mm

(1) Output signal level depends on output current and temperature

Signal pattern, Signal level, Electrical Connection

Signal pattern

This option can be used to reduce the signal output frequency by a given factor. This is useful for applications in which the detection of a pre-specified toothed wheel target would otherwise produce an output frequency too high for the control electronics.

Signal Patterns

Speed Sensor Gel 248 Signal Patterns - Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders

Signal level

Speed Sensor Gel 248 Voltage Output - Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders

Electrical Connection

Speed Sensor Gel 248 Dimensions - Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders

Dimensions

Speed Sensor Gel 248 Dimensions - Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders

Assembly Drawing

Speed Sensor Gel 248 assembly drawing - Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders

Typecode

Speed Sensor Gel 248 typecode - Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders

Notes: For a special customized version a Y-No. will be created. A special version 248Yxxx is manufactured according to a drawing or application description and could differ from the technical standard specification.

Lenord & Bauer: Rail Speed Sensors & Rotary Pulse Encoder

Other products relating to GEL 248 are: GEL 247, GEL 2471, GEL 2472, GEL 2474, GEL 2477, GEL 2478