GEL 15x
GEL 15XF
GEL 15xSSI
GEL 235
GEL 2035
GEL 2310
GEL 235 Accessories

GEL 8110
GEL 8115
GEL 8130
GEL 8135
GEL 8140
GEL 8180
GEL 8190
GEL 8310
GEL 8610

GEL 207
GEL 208
GEL 209
GEL 219
GEL 260
GEL 293
GEL 27xx

GEL 212
GEL 213
GEL 214

GEL 176
GEL 177
GEL 220

GEL 2432
GEL 2442
GEL 2443
GEL 2444

GEL 8810
GEL 8819

Programmable Preselect Counter GEL 104

GEL 247
GEL 248
GEL 2471
GEL 2472
GEL 2474
GEL 2477
GEL 2478

Temperature Sensor Gel 2161
Test Device for Minicoder GEL 210K
Test Device GEL 210TX
Accessories

General information

The MiniCoder family from Lenord + Bauer offers spacesaving solutions for the contactless measurement of rotational movements with direction sensing.

The MiniCoders operate from 0 Hz on for the detection of very slow movements without pulse loss and up to 20 kHz for the direct integration into high-speed motors and machines.

The high interference immunity ensures reliable function even under adverse operating conditions. The MiniCoder GEL 2472 accommodates two independent measuring systems in one housing permitting connection of two different electronic control systems, e.g. wheel slip prevention and traction control. This configuration also permits the use of different supply voltages.

Main Features

• module range from m = 2.0 to m = 3.0
• measuring frequency from 0 to 20 kHz
• simple flange-mounting
• robust stainless steel casing
• customized cable fittings
• very high protection class IP 68
• wide temperature range -40 °C to +120 °C
• high electromagnetic compatibility

Fields of application

• rail vehicles
- traction control
- anti-skid protection and wheel slip prevention
- motor speed control - vehicle speed

Output signals

Two electrically isolated systems that can be combined from system 1 optionally:

• one square-wave signal and one direction signal
• one square-wave signal
• two 90°-shifted square-wave signals for direction sensing

and system 2:

• one square-wave signal

Technical data

Electrical Data
Supply voltage	UB = 10 ... 20 V DC, reverse polarity protected
Current consumption without load	IB ≤ 40 mA
Output signals	electrically isolated, push-pull driver Imax = 20 mA
Input and output frequency	0 ... 20 kHz
Duty	0.5 +/- 0.25
Max. cable length	100 m
Electromagnetic compatibility * Case 1: screen connected to housing Case 2: screen not connected to housing	rail vehicles: EN 50121-3-2 industry applications: EN 61000-6-1 to 4 rail vehicles: test in according with EN 50121-3-2 1)
Insulation resistance	500 V
Connection	fully potted cable outlet with stress relief, 2 x 4 x 0,5 mm2 separated screen cable specification: please request separately
Isolation strength	500 V
Mechanical data
Module	m = 2.0; 3.0 (other modules between 2.0 and 3.0 available on request)
Admissible air gap	depending on module, frequency and temperature range up to max. 1.5 mm
Working and operating temperature range	-40°C ... +120°C
Storage temperature range	-40°C ... +120°C
Protection class	IP 68
Vibration resistance (EN 60068 part 2-6)	200 m/s2
Shock resistance (EN 60068 part 2-27)	2000 m/s2
Width of the target wheel	≥ 20 mm taking into account all tolerances
Form of the target wheel	standard: m = 2.0 to 3.0, involute teeth according to DIN 867
Material of the target wheel	ferromagnetic steel
Weight with 2 m cable without fittings	approx. 550 g
Housing	Stainless Steel

¹⁾ When the shield is not connected at the encoder end, the test level in acc. with EN 61000-4-4 may be lowered depending on installation conditions.

* Test according to EN 61000-4-3: In some cases strong electromagnetic fields can inherently affect the sensor’s HF-oscillator when the sensor is mounted in the open. Sensors installed in a casing are generally sufficiently screened from such fields.

Dimensions

Output level (typical course)

Dimensions Gel 2472

Cable Core Assignment

Signal Pattern

EMC installation advice

• Connect the screen at the end of the cable using a large contact surface, if possible.
• Keep all unscreened cables as short as possible.
• Keep grounding connections as short as possible using large cross-sections (low-induction grounding strip, ribbon cable)
• Lay signal and control cables away from power lines.
• The power supply must correspond to installation class 0 or 1 in according with B.3 of EN 61000-4-5 of 1995.

ESD Instructions

As with any other electronic device, when connecting the MiniCoder suitable precautions against electrostatic discharge must be taken. Do not touch connector pins and connecting wires without such precautions. Observe the guidelines in EN 100015-1.

Examples of customized cable connections

Encoder End


standard cable



Encoder End

Lenord & Bauer: Rail Speed Sensors & Rotary Pulse Encoder