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Rail Speed Sensor Gel 2477

Absolute Encoder GEL 235 - Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders

Rail Speed Sensor Gel 2477








General Information

Description
  • Rail speed sensor based on magnetic measurement principle
  • Maintenance- and wear-free operation due to non-contact measurement of rotation
  • Suitable for ferromagnetic target wheels
  • Safe detection of slow rotation from 0 Hz without pulse loss and for high-speed rotation up to 25 kHz
  • 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
  • Measuring range 0 Hz to 25 kHz
  • High resolution due to pulse multiplier
  • Temperature range -40 C 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
  • 2-channel square-wave signals, 90-shifted, inversed signals

Technical Data

Signal pattern V X
Electrical Data
Supply voltage VS (reverse polarity protected) 10 to 30 V DC
Current consumption per channel IS (without load) ≤ 50 mA
Output signal (short circuit-proof) ≥ VS - 0.8 V
Output signal level low (1) ≤ 0.5 V
Output current per channel ≤ 20 mA
Input frequency target wheel 0 to 25 kHz
Output frequency (2) 0 to 50 kHz / 0 to 100 kHz / 0 to 200 kHz
Duty (depends on measuring scale and air gap) 50% 30 %
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 target wheel 1.00 (D.P. = 25.4)
Permissible air gap 0.8 mm (0.4...1.0 mm)
Width of target wheel ≥ 10 mm (smaller ones on request)
Form of target wheel involute gear as per DIN 867, slotted disk (on request)
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 EN 61373 cat. 3
Shock resistance EN 61373 cat. 3
Type test EN 50155
Housing material sensor stainless steel
Weight sensor (2 m cable) approx. 650 g
Cable
Electrical connection Cable halogen free and screened (specification on request) cable outlet straight or on the side
Cable length ≤ 100 m
Cable diameter 8.2 mm
Cable cross section 6 x 1.0 mm2
Cable type LK1069
Bending radius static / dynamic 24 mm / 41mm

(1) Output signal level depends on output current and the temperature
(2) Max. value of output frequency belongs to multiplication factor (2x, 4x, 8x) and is also dependent von cable length, load and temperature.

Signal pattern, Output signals, Signal level, Electrical connection

Signal Pattern

Speed Sensor Gel 2477 - Signal Pattern - Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders

Output Signal

Speed Sensor Gel 2477 - Output Signals - Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders

Signal Level

Speed Sensor Gel 2477 - Signal Level/Electrical Connection - Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders


Explanations:

1, 2 = channel 1, channel 2

_
1, 2 = inverse channel 1, inverse channel 2
Vs = supply voltage

Dimensions

Speed Sensor Gel 2477 - Dimensions - Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders

Please observe the EMC-reference into the operating instruction!

Typecode

TypeCode for Rail Speed Sensor GEL 2477

Speed Sensor Gel 2477 - 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 2477Yxxx is manufactured according to a drawing or application description and could differ from the technical standard specification.

Example for customized cable connections

Encoder End

Speed Sensor Gel 2477 - Encoder End - Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders

Cable End

Speed Sensor Gel 2477 - Cable End - Lenord & Bauer Rail Speed Sensors and Rotary Pulse Encoders

Lenord & Bauer: Rail Speed Sensors & Rotary Pulse Encoder

Other products relating to GEL 2477 are: GEL 247 GEL 248, GEL 2471, GEL 24724, GEL 2474, GEL 2478