General Feedback Catalog
36Pages

FAGOR Linear and Rotary Encoders

Electrical Output Signals 6 Mechanical Design and Installation 9 Linear Encoder Selection Guide 10 High Performance Linear Feedback Systems Standard Linear Feedback Systems Linear Encoders for Press Brake Applications 24 Connection Components for Linear Feedback 26 Rotary Encoder Selection Guide 28 High Resolution Rotary Encoders 29 General Purpose Rotary Encoders 33 Accesories for Rotary Encoders

Overview Operating principle Linear and rotary feedback systems are systems transforming these types of movements into electronic signals. These signals, properly processed, are the basis for displacements readout for measuring and control equipment. FAGOR Feedback systems use two different elements for generating the electrical feedback signals: - Graduated glass Scales (for linear feedback systems) or graduated glass discs (for rotary encoders). - Graduated Steel Tape Scales. Measuring process FAGOR Feedback Systems provide the output signals through an opto-electronic process based on...

Reference marks (home marker pulses) Applications A reference signal is a special engraving which provides a pulse when run through. The reference signals are used to restore the machine zero position (home) and especially to avoid errors due to accidental axis movement while the CNC or DRO was off. In response to the new challenges that machine manufacturers are facing (high speed machining that cause greater vibration; greater precision; immunity to temperature changes; etc. FAGOR has developed two feedback product ranges according to these new demands. FAGOR Linear Scales offer five...

Electrical Output Signals Linear and Rotary Feedback Systems General Characteristics TTL Signal Measurement, by means of opto-electronic technology: T • On glass linear encoders, by means of a 20 µm-pitch chrome graduated glass. On steel tape linear encoders, using a pitch of 100 µm for the F model and 40 µm for the L model. VA VOL VB • Rotary encoders: by means of a chrome graduated disc with a pitch depending on the number of lines per turn. The signals generated are amplified by an electronic circuit incorporated into the reader head which converts the resulting primary signals into...

Differential TTL Sinusoidal signal: 1Vpp T VA T VOH VA Vo VB VOL Vo VB VIo TIo VIo Two pulse trains A and B shifted 90°, plus their inverted signals /A, /B. VOH ≥ 2.5 V ISOURCE ≤ 20mA VOL ≤ 0.5V ISINK ≤ 20 mA Two voltage modulated signals A and B shifted 90° plus their inverted signals /A, /B. VA =1VPP +20%, -40%, peak to peak. VB =1VPP +20%, -40%, peak to peak. VI0 = 0,2÷0,85V, useful area. V0 = 2.5 V. 5V ± 5%, 150 mA 5 V ± 10%, 100 mA 50 m (163 ft) 150 m (490 ft) • A reference pulse (I0) every 50 • One reference pulse I0 every mm (about 2 inches), plus its inverted signal. •...

~ 0<*H« DC CONTROL OE S / «CURACV TEST^ The Resolution of a measuring system is the measuring unit used for displaying a movement. Accuracy refers to the precision of the On FAGOR linear encoders, the accuracy defines the limits of maximum error (in urn) existing in any 1 meter section chosen at random along its full measuring length. Every single FAGOR linear encoder has undergone a final accuracy control carried out on a computerized measuring table and by means of a LASER interferometer inside a chamber whose temperature Each FAGOR linear encoder comes with the resulting accuracy graph...

Mechanical Design The scale (glass or steel tape) is protected against possible chips, water and dirt by a sturdy aluminum body and rubber sealing lips meeting the IP53 protection standard. The scale also has an air tap for installing an optional compressed air device to reach an IP64 protection standard. Graduated scale Cursor Thermal mounting system (TDMS®) The reader head moves inside the linear encoder on roller bearings that minimize wear and expand the life span of the whole unit. Aluminum Profile Sealing lips Reader head Air intake at both ends (M5) Standard Feedback Systems High...

Linear Encoder Selection Guide The application needs to be evaluated to ensure that the correct linear encoder is installed on the machine. To do this the following points should be taken into account: Installation This takes into account the physical length of the installation and the space available for installation. These are fundamental to determining the type of linear encoder to use (Type of Profile). Accuracy Each linear encoder is supplied with an accuracy chart showing the linear encoders accuracy over it entire length. Signal Product Family Signal selection takes into account the...

Vibration (55 to 2000 Hz) Measuring Lengths Accuracy Grades Signal Period • Without mounting spar: 10g • With mounting spar: 20g • Without mounting spar: 70 mm to 1240 mm • With mounting spar: 70 mm to 2040 ± 5 µm ± 3 µm 4 µm 20g 140 mm to 3040 mm ± 5 µm ± 3 µm 2 µm Output Signals Measuring Steps (Resolution up to) 0.4 µm Page 1 µm SX / SSX 12 and 13 0.5 µm SY / SSY 0.1 µm Differential TTL Model SW / SSW 20 µm 1 Vpp 0.1 µm SP / SSP / SA (*) / SU (**) 4 µm Differential TTL 1 µm GX 0.5 µm GY 0.1 µm GW 2 µm 0.4 µm 20 µm GP / GA (*) 4 µm TTL 1 µm LX 40 µm 1 Vpp 0.1 µm LP 20 µm TTL 5 µm MT / MKT...

GENERAL CHARACTERISTICS Maximum speed Maximum vibration Moving force Light source Power supply Reader head 10 g without mounting support 20 g with mounting support with pressurized air intake With built-in connector (see pages 30-31 for connection devices) Chromed glass scale with 20 urn (0.0008 inch) grating pitch Measuring length: S Series These measuring lengths require ; mounting support plate. Especially recommended for applications with a measuring length of up to 2040 mm in high-speed and high-vibration environments and small places. The special and patented design of the mounting...