Magnetic absolute rotary encoder GEL 25 Singleturn, Multiturn up to 28 bits (SSI) Technical information version 09.06 Unique Nonius-evaluation Measuring principle: magnetic, high resolution Evaluation: Nonius-principle Measuring scale: metallic code disc Features Resolution up to 28 bits SSI interface with Gray code or binary code SSI programmable (optionally using parameter kit: ST/MT resolution, output code, counting direction, preset) Counting direction (CW/CCW) and preset are selectable via control input in any way Additional sine wave signals with 64 periods per revolution (sin/cos V pp differential signal), suitable for interpolation Axial or radial connector or cable exit Cable exit optionally with low-profile cable cover or cable gland Internet: http://www.lenord.de Tel.: +49 (0)208 996-0 Lenord, Bauer & Co. GmbH E-Mail: info@lenord.de Fax: +49 (0)208 676292 ohlenstrasse 2 4645 Oberhausen, Germany
General information General The GEL 25 series absolute encoders produce an unique position value for each angular position via a digital interface with a resolution of up to 28 bits. The absolute position value is available immediately after the absolute rotary encoder is put into operation. The new encoder series includes singleturn absolute encoders (ST), which detect the absolute position within one full turn of 60, and multiturn absolute encoders (MT), which use mechanical gearing to detect the number of complete turns. Compact design Using a standard flange size of 58 mm, extremely compact ST and MT encoders with solid and semi hollow shafts have been designed and include mechanical gearing within a housing length of just 46.5 mm. Robust construction Anodised aluminium is used to provide a highly durable housing The double-bearing steel shaft of the absolute rotary encoder combined with the metallic code disc provides an extremely robust unit. A back cover with O-ring (with optional preset button) seals the housing hermetically. IP 67 protection is achieved with an optional shaft sealing ring. Magnetic measuring principle The operating principle of the absolute rotary encoder is based on the non-contact magnetic scanning of a new type of code disc made of ferromagnetic steel. Giant- Magneto-Resistance (GMR) sensors scan the code disc. The vernier principle is used to calculate the absolute position to a high degree of resolution and accuracy. The magnetic measuring principle provides a high degree of robustness and reliability as well as an extremely stable temperature response. Immune to temperature variations, effects of dirt and oil mist, ew-point proof, Suitable for heavy-duty applications, Resistant even to aggressive media, Magnetic scanning is not subject to ageing, Long, maintenance-free service life. Interface The absolute encoder provides its position data in binary or Gray-Tanne code via a high-speed SSI interface. Parameterisation of output codes, resolution, counting direction and preset is optionally possible using software and an interface card. A high resolution of up to 28 bits and a high clock rate of up to 2 MHz enable even highly dynamic motion processes to be detected with absolute certainty. In addition, the encoder provides sine / cosine signals and their inverse signals with 64 periods per turn and Vpp differential signal levels. The sine / cosine signals are highly interpolatable due to their signal quality. Principles of serial data transmission Gray code (25 bits), RS 422 / RS 485 standard clock + data + MSB T LSB Tp f > 62.5 khz Tp = clock pulse space min. 6 µs T = cycle duration of the clock signal Innovative code disc: + + = 2 Lenord +Bauer S22-25(09.06)
Output signals SSI data word The timing diagram is read out at a clock rate of 66.6 khz (RS 485 differential signal) for example. At maximum SSI clock rate the current position data are available in t > µs. After the supply voltage has been switched on, the current position can be interrogated after 0 ms. clock time out 6 µs SSI data Incremental signal In addition to the SSI data word, the GEL 25 also provides sin/cos and inverse output signals. These sin/cos signals ( V pp differential signal) are produced with 64 periods per revolution and can be highly interpolated. S22-25(09.06) Lenord +Bauer
Technical data escription Electrical data Mechanical data Ambient data I ncremental deviation < 0.0 R epeat accuracy < 0.0 A ccuracy ± 0. O perating voltage... 0 V C with reverse battery protection (option: 5 V C) P ower consumption <.6 W (without load) Resolution Transmission Output code frequency Singleturn ST Multiturn MT SSI 8, 9,,..., 6 Bit (measuring step at 60 ) 4, 8, 2 Bit (revolution, mechanical gear) 62.5 khz... 2 MHz binary, Gray river SSI, to RS 485 Analogue Transmission The irection signal immunity to interference Referencing of rotation (Preset) Parameterisation Housing Flange Material Weight Operating speed (limit value) Shaft Option diameter, housing length load (axial/radial) Sin/Cos signals and invers signals about 64 periods V - difference signal ( ) P P max.,200 m depending on transmission rate per resolution high immunity to interference via symmetrical transmission adjustable, according to standard with view of the (CW) increasing position values about input level (pin 9), optional with pushbutton S SI option: software and hardware (parameter kit) Singleturn ST Multiturn MT Singleturn ST Multiturn MT shaft sealing ring (IP 67, Viton) clamping flange 58 mm, 46.5 mm synchro flange anodised aluminium 00 g g 2,000 min - ( IP 64), 6,000 mi n (IP 67 6,000 min - ( short time 2,000 mi n - ) 50 N / 50 N shaft clockwise semi hollow shaft - ) reduced operating speed and shaft load C able (optional) halogen-free PUR ( 6 x 2 mm, AWG 22) 9 - Bearing life > at,000 min Operating torque h < Ncm P rotection class IP 64, IP 67 (optional) Shock Vibration protection (IEC 68, 2-27) protection (IEC 68, 2-6) 2 2,000 m/ s,ms 2 200 m/ s, 2.000 Hz W orking temperature range -40 85 C (optional -40 5 C in preparation) O perating temperature range -40 85 C (optional -40 5 C in preparation) Storage temperature range -40 85 C R elative humidity of air max. 0 % Condensation permissible EMC EN 600-6- to -4 Insulation strength Ri > M at 500 V AC 4 Lenord +Bauer S22-25(09.06)
imensioned drawing Clamping flange 6 L 20 L * * Ø 48 ±0. Ø 58 Ø 5.8 Ø 6 g7 46.5 * 4 x M 4 / 7 deep x 20 5 Synchro flange 6 L 20 L 4 * * Ø 42 ±0. * 4 Ø 58 Ø 58. Ø 50 46.5 x M 4 / 7 deep x 20 Semi hollow shaft 7.5 Ø 5 +0. * * * 4 Ø 42 ±0. Ø 58 Ø 52 46.5 Ø 5 +0. x 20 29 x M / 5 deep * see connection variants of the next page S22-25(09.06) Lenord +Bauer 5
Connection variants Connector- or cable outlet over screwed cable gland 22.4 View on connector (contact side) 22.4 8 Pin Signal Colour (Cable outlet) escription GN blue ground connection 8 SW 7 Cable outlet with cable cap axialflex R SW 7 8 2 ata+ Takt+ white yellow 4 -Sin gray 5 + Sin green 6 -Cos pink 7 + Cos black difference data signal according to RS 485 difference clock signal according to RS 485 64 periods / 60 difference signal V PP 8 SW 7 SW 7 Accessories Coupling / spring plate / support coupling / bearing pedestal Parameter kit (in preparation) For further accessories please refer to the technical information sheet on encoder accessories 8 U B red 9 Preset ata- Takt- 2 CW/CCW Screen grey /pink brown purple red / blue operating voltage electronic adjustment, t > 0 ms U B difference data signal according to RS 485 difference clock signal according to RS 485 counting direction CW = GN (default) CCW = 5 V Spring plate (stainless steel) FB250/02, straight pin width 4 / 6 mm FB2504/05, bolt circle 6 mm / angle 20 Other spring plates on request FB250... FB2504 FB2505 Reduction sleeves (made from non-conductive plastic) RH250... 8 mm mm 2 mm 6 Lenord +Bauer S22-25(09.06)
Type code Magnetic absolute rotary encoder SG SB SP 25 Interface SSI Gray SSI binary SSI programmable 08 09 2 4 5 6 Resolution singleturn 8 bit, 256 steps/revolution 9 bit, 52 steps/revolution bit, 24 steps/revolution bit, 2048 steps/revolution 2 bit, 4096 steps/revolution bit, 892 steps/revolution 4 bit, 684 steps/revolution 5 bit, 2768 steps/revolution 6 bit, 6556 steps/revolution 00 04 08 2 Revolution multiturn only singleturn (ST) 04 bit, 6 revolution 08 bit, 256 revolution 2 bit, 4096 revolution A B C E Y Flange, shaft clamping flange, = 6 / L = mm clamping flange, = / L = 20 mm synchro flange, = 6 / L = mm synchro flange, = / L = 20 mm semi hollow shaft, = 5 / T = 25 mm customized flange/shaft A B C E Outlet, position R cable cap axialflex, axial screwed cable gland, axial screwed cable gland, radial 2-pole connector, Typ M 2, axial 2-pole connector, Typ M 2, radial S B C Y Cable length connector outlet / without cable meter meter 5 meter customized length 2 4 _ Protection class, pushbutton protection class IP 64 protection class IP 64, Preset-pushbutton protection class IP 67 protection class IP 67, Preset-pushbutton Options in bold face are standard options. S22-25(09.06) Lenord +Bauer 7
We have agencies in: Austria Belgium Canada enmark 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 ohlenstrasse 2 4645 Oberhausen, Germany Phone: +49 208 996-0 Fax: +49 208 676292 info@lenord.de www.lenord.de SensorLine and axialflex are registered trademarks of Lenord, Bauer & Co. GmbH. Subject to technical modifications and typographical errors. For the latest version please visit our web site : www.lenord.de. 8 Lenord +Bauer S22-25(09.06)