AVS78E PF | Alldatasheet
Document overview
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Technical content
Features
Up to 16 Bit singleturn ATEX approval IECEx approval Flameproof enclosure Removable connection cap G alvanically isolated RS 422 interface
Description
This absolute rotary encoder returns a position value corresponding to the shaft position via the SSI interface. In order to obtain the position data, the controller sends a start sequence to the absolute rotary encoder. The encoder then responds synchronously to the pulses from the controller with the position data. The modular design enables you to order the absolute rotary encoder so that it fulfills your requirements. A listing of the part options can be found in the ordering information. You can select the counting direction via 2 functional inputs and set the zero position. 0102 SYNCHRON SERIELLES INTERFACE
Singleturn absolute encoder AVS78E Release date: 2019-08-23 11:33 Date of issue: 2019-08-23 t157828_eng.xml Germany: +49 621 776 1111Pepperl+Fuchs Group Refer to "General Notes Relating to Pepperl+Fuchs Product Information". USA: +1 330 486 0001 Singapore: +65 6779 9091 Dimensions Encoder length L Version Radial cable exit Axial cable exit Clamping flange Servo flange Clamping flange Servo flange Length L 118 mm 118 mm 134 mm 134 mm ø48 ±0.1 15° 15° ø69 ±0.1 L 20 16 5 ø10 g7 ø36 f7 ø78 117 -0.05 -0.10 3.5 Nm ±0.5 NmClamping flange, cable exit radial 3 x M6, 6 deep 3 x 120° 3 x M3, 6 deep 3 x 120° 3 x M4, 6 deep 3 x 120° ø 3, 8 deep L 117 ø42 ±0.1 ø60 ±0.1 20 ø10 g7 ø50h7 ø78 -0.05 -0.10 3.5 Nm ±0.5 NmServo flange, radial cable exit 3 x M6, 10 deep 3 x 120° 3 x M4, 9 deep 3 x 120° ø48 ±0.1 15° 15° ø69 ±0.1 L 20 16 5 ø10 g7 ø36 f7 ø78 -0.05 -0.10 3.5 Nm ±0.5 Nm Clamping flange, axial cable exit 3 x M6, 6 deep 3 x 120° 3 x M3, 6 deep 3 x 120° 3 x M4, 6 deep 3 x 120° ø 3, 8 deep
Singleturn absolute encoder AVS78E Release date: 2019-08-23 11:33 Date of issue: 2019-08-23 t157828_eng.xml Germany: +49 621 776 1111Pepperl+Fuchs Group Refer to "General Notes Relating to Pepperl+Fuchs Product Information". USA: +1 330 486 0001 Singapore: +65 6779 9091 Electrical connection Signal Cable Terminal compartment Ground wire green-yellow Grounding terminal GND (rotary encoder) 1 1 +Ub (rotary encoder) 2 2 Pulse (+) 3 5 Pulse (-) 4 6 Data (+) 5 8 Data (-) 6 7 Preset 7 4 Counting direction 8 3 ø42 ±0.1 ø60 ±0.1 L 20 ø10 g7 ø50h7 ø78 -0.05 -0.10 3.5 Nm ±0.5 Nm Servo flange, axial cable exit 3 x M6, 10 deep 3 x 120° 3 x M4, 9 deep 3 x 120° Shaft 12 mm 2 flats at 120° 2 flats at 120°48 M17 x 0.75 42 5 42 5 M17 x 0.75 ø12h7 ø12h7 12 3456 78
Singleturn absolute encoder AVS78E Release date: 2019-08-23 11:33 Date of issue: 2019-08-23 t157828_eng.xml Germany: +49 621 776 1111Pepperl+Fuchs Group Refer to "General Notes Relating to Pepperl+Fuchs Product Information". USA: +1 330 486 0001 Singapore: +65 6779 9091 The Synchronous Serial Interface was specially developed for transferring the output data of an absolute encoder to a control device. The control module sends a clock bundle and the absolute encoder responds with the position value. Thus only 4 lines are required for the clock and data, no matter what the resolution of the rotary encoder is. The RS 422 interface is optically isolated from the power supply. SSI signal course Standard SSI output format Standard At idle status signal lines "Data +" and "Clock +" are at high level (5 V). The first time the clock signal switches from high to low, the data transfer in which the current information (position data ( Dn) and special bit (S)) is stored in the encoder is introduced. The highest order bit (MSB) is applied to the serial data output of the encoder with the first rising pulse edge. The next successive lower order bit is transf erred with each following rising pulse edge. After the lowest order bit (LSB) has been transferred the data line switches to low until the monoflop time T m has expired. No subsequent data transfer can be started until the data line switches to high again or the time for the clock pause T p has expired. After the clock sequence is complete, the monoflop time T m is triggered with the last falling pulse edge. The monoflop time T m determines the lowest transmission frequency. SSI output format ring slide operation (multiple transmission) In ring slide operation, multiple transmission of the same data word over the SSI interface makes it possible to offer the possibility of detecting transmission errors. In multiple transmission, 25 bits are transferred per data word in standard format. If the clock change is not interrupted after the last falling pulse edge, ring slide operation automatically becomes active. This means that the information that was stored at the time of the first clock change is generated again. After the first transmission, the 26 th pulse controls data repetition. If the 26th pulse follows after an amount of time greater than the monoflop time Tm, a new current data word will be transmitted with the following pulses. If the pulse line is exchanged, the data word is generated offset. Ring slide operation is possible up to max. 13 bits. Block diagram Line length The selection of the counting direction input (cw/ccw) is activated with 0-level. The zero-set input (PRESET 1) is activated with 1-level. Tm: Tp: MSB: LSB: Position data Special bit Most significant bit Least significant bit Duration of period of clock signal ≤ 1 MHz Monoflop time 10 µs ... 30 µs Clock pause ≥ monoflop time (Tp ≥ Tm) LSBMSB Tp Tm T Clock + Data + Dn Dn-1 Dn-2 Dn-3 D2 D1 S Line length in m Baudrate in kHz < 50 < 400 < 100 < 300 < 200 < 200 < 400 < 100 Rotary encoder Interface electronics Receiver Logic Clock generator Data + Data - Clock - Clock +
Singleturn absolute encoder AVS78E Release date: 2019-08-23 11:33 Date of issue: 2019-08-23 t157828_eng.xml Germany: +49 621 776 1111Pepperl+Fuchs Group Refer to "General Notes Relating to Pepperl+Fuchs Product Information". USA: +1 330 486 0001 Singapore: +65 6779 9091
Ordering information
AVS78E 0 0 00 Number of singleturn bits 12 4096 16 65536 Number of multiturn bits
00 Singleturn rotary encoder
I Stainless steel 1.4404 (AISI 316L) Output code B Binary G Gray Option 2
0 Zeroing (preset) and counting direction (F/R)
K2 Cable, 9 strands, 2 m K5 Cable, 9 strands, 5 m KR T erminal compartment, 1 cable gland, 1 stopping plug Flange version
1 Clamping flange
2 Servo flange
01 Shaft Ø10 mm x 20 mm
02 Shaft Ø12 mm x 25 mm
E Explosion-proof, standard IP66 Functional principle S Singleturn Type of shaft V Solid shaft Data format A SSI interface zero-set input (PRESET 1) IN Filter Logic Pull down Input for selection of counting direction (cw/ccw) IN Filter Logic Pull up Ue Ue