2-Channel Rail Speed Sensor GEL 247

Speed Sensor Gel 247 -  Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders Absolute Encoder GEL 247

Speed Sensor Gel 247 -  Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders Absolute Encoder GEL 247

Description

  • 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
  • Two channels shifted by 90 provide the direction of rotation
  • Robust and compact stainless steel housing suitable for harsh application
  • Simple flange mounting
  • Customized cable fittings

Features

  • Module target wheel 1.00 to 3.50
  • Measuring range 0 Hz to 25 kHz
  • Temperature range -40 to +120 C
  • Protection class IP 68
  • Type test according to EN 50155

Fields of application

Rail Vehicles

    - Traction control
    - Anti-slip
    - Motor Speed

Automation

    -Measurement of speed and positions at gears, motors and roller

Output signals

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

Technical data

Signal pattern E F V X D H
Electrical Data
Supply voltage VS (reverse polarity protected) 10 to 30 V DC
Current consumption per channel IS (without load) ≤ 30 mA (optional with
frequency divider)
≤ 60 mA
Output signal (short circuit-proof) square-wave signals
Output signal level high (1) ≥ VS - 1.8 V
Output signal level low (1) ≤ 1.5 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% 25%
Phase shift typ. 90
Slew rate (2 m cable) ≥ 10 V/s
Electromagnetic compatibility rail vehicles (EN 50121-3-2)
industrial applications (EN 61000-6-1 to 4)
Insulation 500 V AC (EN 60439-1)
Mechanical data
Module m of target wheel
1.00 / 1.25 / 1.50 / 1.75 / 2.00 / 2.25 / 2.50 / 3.00 / 3.50
Permissible air gap (for module m)
m: 1.00 to 1.25 [D.P.: 25.4 to 20.3]
m: 1.50 to 3.5 [D.P.: 16.93 to 7.26]
typ. 0.7 mm (0.1 to 0.8 mm)
typ. 0.7 mm (0.1 to 1.3 mm)/td>
Width of target wheel
≥ 10 mm (smaller ones on request)
Form of target wheel
involute gear as per DIN 867
Material of target wheel
ferromagnetic steel
Operating and ambient temperature
-40C to +120 C
Storage temperature
-40C to +120 C
Protection class
IP 68
Vibration resistance
200 m/s2 (acc. EN 60068-2-6)
Shock resistance
2000 m/s2 (acc. EN 60068-2-27)
Type test
EN 50155
Housing material of sensor
stainless steel
Weight of sensor (2 m cable)
approx. 550 g
Electrical Connection
Cable
Cable halogen free and screened (specification on request), cable outlet straight or lateral
Cable length
≤ 100 m
Cable diameter 8.2 mm 8.0 mm
Cable cross section 6 x 1 mm2 12 x 0.34 mm2
Cable type LK1069 LK1076
Bending radius static / dynamic
24 mm / 41 mm

Frequency Divider

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 would otherwise produce an output frequency too high for the control electronics.

Signal Pattern

Speed Sensor Gel 247 Signal Patterns -  Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders

Signal level, Electrical connection Dimensions

Signal level


Speed Sensor Gel 247 Voltage Output -  Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders

Electrical Connection


Speed Sensor Gel 247 Electrical Connection -  Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders

Dimensions


Speed Sensor Gel 247 Dimensions -  Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders

Assembly Drawing


Speed Sensor Gel 247 Assembly Drawing -  Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders

Type Code for Rail Speed Sensor Gel 247


Speed Sensor Gel 247 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 247Yxxx is manufactured according to a drawing or application description and could differ from the technical standard specification.


Examples of customized cable connections:

Encoder End

Speed Sensor Gel 247 Encoder End -  Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders

Cable End

Speed Sensor Gel 247 Cable End -  Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders

Lenord & Bauer: Rail Speed Sensors & Rotary Pulse Encoder

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