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GPC Y ASOCIADOS S.A.
Veléz Sarsfield 201640 Martinez
Horne Technologies cc
PO Box 536
Betty's Bay, 7141
FAULHABER MINIMOTOR SA
Zona Artigianale 8, Madonna del Piano
FAULHABER MICROMO LLC
14881 Evergreen Avenue
Clearwater, FL 33762-3008
NRC Engineering & Precision Drives Co., Ltd.
17F., No. 890, Jingguo Rd., Luzhu Dist.
Taoyuan City 33858, Taiwan, R.O.C.
EDEL Teknoloji Sistemleri Sanayi ve Ticaret Ltd.Şti
Folkart TowersAdalet Mah.Manas Blv. No:47B/2809
FAULHABER Asia Pacific Pte Ltd.
Blk 67 Ubi Road 1, #06-07 Oxley Bizhub
Compotech Provider AP
Gustavslundsvägen 145, 4 tr
167 51 Bromma
56 (bldg. 32), Shosse Enthusiastov
Staubo Elektro-Maskin a.s.
FAULHABER Malaysia Sdn Bhd
1A-2-01 & 02 · One Precinct · Lengkok Mayang Pasir
11950 Bayan Baru · Penang · Malaysia
Swiss Amiet Co., Ltd.
W-903, SK V1 Center, 11 Dangsan-ro 41-g
Shinkoh Electronics Co., Ltd.
Tokyo Sales Office, Motor Sales Division8F, REID-C OMORI building, 6-20-8
Minami-oi, Shinagawa-ku, Tokyo 140-0013
Inteltek Automation JV
S.No. 100/5, Ambegaon
Pune - 411046
Lewenstein Technologies Ltd.
1 Ha'arava St. Givat Shmuel
Electro Mechanical Systems Ltd.
Eros House, Calleva Industrial Park, Aldermaston
Reading, RG7 8LN
FAULHABER France SAS
Parc d’activités du Pas du Lac2, Rue Michaël Faraday
Passeig Ferrocarrils Catalans 178
Cornellà de Llobregat 08940 (Barcelona)
Dr. Milady Horákové 185/66
460 06 Liberec
Marte Científica e Instrumentação Industrial Ltda
Av Fco Andrade Ribeiro 430
37540-000 Santa Rita do Sapucai, MG
FAULHABER Drive System Technology (Taicang) Co., Ltd.
Eastern Block, Incubator Building, No. 6 Beijing Road West
Taicang 215400, Jiangsu Province
FAULHABER Benelux B.V.
High Tech Campus 9
5656 AE Eindhoven
FAULHABER Benelux B.V.
High Tech Campus 9
5656 AE Eindhoven
FAULHABER Austria GmbH
ERNTEC Pty. Ltd.
15 Koornang Road
Scoresby, VIC 3179
DR. FRITZ FAULHABER GMBH & CO. KG
East 10H3 Wu Mart Huike Mansion Building, No. 158 W. 4th Ring Road North
Haidian District, Beijing 100097
Room 1415, No. 5 Fuchang Road
Haizhu District, Guangzhou, 510240, Guangdong Province
Room A-509, No. 318 Yanta Road South
Qujiang New District, Xi’an 710061, Shaanxi Province
In combination with the FAULHABER BL-motors, the absolute encoder is ideal for commutation, rotational speed control and position control. Absolute means that each shaft position within a revolution is assigned a unique angular value. Sine commutation is also possible with an absolute encoder.
Unlike the incremental encoder, an absolute encoder determines absolute positions, not relative positions. After switching on the absolute encoder, an absolute return value is available for each position of the motor shaft. A distinction is made between single turn and multi turn encoders. FAULHABER absolute encoders are single turn encoders.
The difference between the two absolute encoders is simple: with a single turn encoder, each position of the motor shaft corresponds to a specific return value. After a complete revolution of the motor shaft, the signals repeat. Thus, the single turn encoder supplies no absolute information about the number of completed revolutions. Positioning of more than one revolution is possible with this absolute encoder as well, however. Comparable to the incremental encoder, this is performed by counting the number of revolutions forward or backward using a counter on the motor control. For travel distances of more than one motor revolution, it is necessary to reference after a power interruption. No referencing is necessary for travel distances of less than one motor revolution.
Multi turn encoders behave differently. This type of absolute encoder also records the number of completed revolutions. This is performed either by means of an additional sensor as well as an electronic memory element or by means of a gearhead. Thus, multi turn encoders supply an absolute value over multiple revolutions of the motor shaft. This can be recorded within a defined number of revolutions, which are limited by the memory element or gearhead. Referencing is generally not necessary if the maximum amount of revolutions is not exceeded.
The resolution of an absolute encoder is defined via the number of steps per revolution and is specified in bits. Absolute encoders generate a serial code from multiple bits. FAULHABER absolute encoders support the SSI Interface with BISS-C Protocol. BISS-C supports communication with clock speeds of up to 2 MHz. Here, the absolute position value (DATA) is transferred in synch with a cycle (CLK) specified by the controller.
Functionality of absolute encoders
Absolute encoders of the AES-4096 series consist of a diametrically magnetized, two-pole sensor magnet which is fastened to the motor shaft. A special angle sensor for detecting the motor shaft position is positioned in an axial direction in relation to the sensor magnet. The angle sensor comprises all necessary functions, such as Hall sensors, an interpolator and driver stages. The analog signal of the sensor magnet detected by the Hall sensors is processed, after appropriate amplification, by a special algorithm to produce a high-resolution encoder signal. At the output there is absolute angle information available with a resolution of 4 096 steps per revolution. This data can be queried by a SSI Interface with BISS-C Protocol.
The absolute encoder is ideal for commutation, rotational speed control and position control. In our Drive Selection Tool, you can find the combination of FAULHABER absolute encoders and FAULHABER motors that ideally suits your requirements.
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