Speed sensor MiniCoder GEL 2471

Transcription

1 Speed sensor MiniCoder GEL 2471 for electrically conducting toothed-wheels Technical information version 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 2471 works according to the induction principle and scans targets made of electrically conducting materials. The sensor can be factory-programm to scan either toothed wheels made of steel or for example, a weightsaving aluminium toothed ring mounted on an existing motor fan wheel. Main features module range from m = 2.0 to m = 3.0 measuring frequency from 0 to 20 khz simple flange-mounting without adjustment robust stainless steel casing straight or side cable outlet 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 - wheel slip prevention - engine speed machine automation - measurement of speeds and positions in machines and motors Output signals signal forms: - single-track square-wave signals - two 90 -shifted square-wave signals for direction sensing - one square-wave signal and one direction signal All signals are also available in their inverted form. Internet: Tel.: +49 (0) Lenord, Bauer & Co. GmbH info@lenord.de Fax: +49 (0) Dohlenstrasse Oberhausen, Germany

2 Technical data Electrical data Supply voltage U B = V DC, reverse polarity protected Current consumption without load I B < 40 ma Output signals square-wave, push-pull driver I m ax = 20 ma Signal pattern Input and output frequency for sense of rotation see installation drawing khz Duty 0.5 +/ R ise time (2 m cable) > 10 V/µ s Max. cable length Electromagnetic compatibility * Case 1: screen Case 2: screen Isolation Connection strength Mechanical data Module Admissible air gap Working connected to housing not connected to housing and operating temperature range 100 m rail vehicles: EN industry applications: EN and 2; EN and 2 1) r ail vehicles: test in according with EN V 2 fully potted cable outlet with stress relief, 6 x 1 mm screen connected at encoder (recommended), optionally insulated cable specification: please request separately m = 2.0; 3.0 (other modules between 2.0 and 3.0 available on request) depending on module, frequency and temperature range up to max. 1.5 mm -40 C C Storage temperature range -40 C C Protection class IP 68 Vibration Shock resistance (EN part 2-6) resistance (EN part 2-27) m/ s m/ s W idth of measuring toothed-wheel > 10 mm taking into account all tolerances Form of measuring toothed-wheel Material of measuring toothed-wheel Weight with 2 m cable without fittings involute teeth, slotted teeth, others on request steel or alternatively aluminium other electrically conducting materials on request approx. 500 g Housing stainless steel 1) When the shield is not connected at the encoder end, the test level in acc. with EN may be lowered depending on installation conditions. * Test according to EN : 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. 2 Lenord +Bauer DS (10.02)

3 Dimensions Dimensions GEL 2471 (straight cable outlet) Dimensions GEL 2471 (side cable outlet) DS (10.02) Lenord +Bauer 3

4 Installation drawing, EMC and ESD instructions Installation drawing recommended fastening screws M 8 x 20 DIN 912 / ISO 4762 detail X bevelling X O-ring 21 x 2,5 mat.: NBR ±0.6 recommended air gap 0.7 mm 1.5 R Drill pattern 13.5 min.10 M 8 ø26 H7 7 index pin visible area, toothed wheel turning clockwise ø ±0.2 EMC instructions To improve the electromagnetic environment please observe the following 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) If the event of differences in potential between machine ground and ground of electronic circuit, appropriate measures must be taken to prevent equalizing currents from flowing via the cable shield (e.g. by providing for large-section equipotential bonding conductors or by using cables with separate double shielding where the shields are connected only at one end). 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 of ESD instructions (Components sensitive to electrostatic discharge) As with any other electronic device, the MiniCoder must be connected with the necessary precautions against the risk of electrostatic discharge. Connector pins and connecting wires must not be touched without suitable discharge protection devices. Observe the instructions of EN Lenord +Bauer DS (10.02)

5 Supply voltage concept 1st case (standard, screen connected at the encoder housing) 2nd case (option, screen not connected at the encoder housing) DS (10.02) Lenord +Bauer 5

6 Examples of customized cable connections Encoder end standard cable, straight outlet standard cable, side outlet flexible conduit, straight outlet flexible conduit, side outlet rubber conduit, straight outlet flexible conduit, extended side outlet Cable end flexible conduit connection and cable end open rubber conduit and cable end open round connector with flexible conduit HTS connector with flexible conduit connector with shrink moulded sleeve round connector, 90 elbow with flexible conduit 6 Lenord +Bauer DS (10.02)

7 Cable wire assignment (GEL 2471 without fittings, screened) Cable wire assignment, Type code Type code GEL 2471 E F V X S G Signal pattern E-signal, V DC F-signal, V DC V-signal, V DC X-signal, V DC S-signal, V DC G-signal, V DC Module module 2.0 module 3.0 (other modules in between on request) A B S Material of measuring toothed wheel aluminium steel others on request L P Cable screen cable screen connected to encoder housing cable screen not connected to encoder housing F G Cable outlet straight bent 90 xxxx Cable length (cm) cm of cable length N S Preparation standard cable with special fittings 2471 Ordering information If customized cable, conduit and connectors are required, please supply detailed specifications. DS (10.02) Lenord +Bauer 7

8 We have agencies in: Austria Belgium Canada Denmark Finland France Germany Great Britain Israel Italy Korea Malaysia Norway Portugal Sweden Switzerland Spain the Czech Republic the Netherlands the USA Turkey Lenord, Bauer & Co. GmbH Dohlenstrasse Oberhausen, Germany Tel.: +49 (0) Fax: +49 (0) Subject to technical modifications and typographical errors. For the latest version please visit our web site : 8 Lenord +Bauer DS (10.02)