BSS58 PF | Alldatasheet
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Technical content
Features
Industrial standard housing Ø58 mm 1 3 B i t s i n g l e t u r n Output code: gray and binary Transfer of position data with 4 AS- Interface slaves Parameterization and addressing via AS-Interface Recessed hollow shaft
Description
In modern machines and systems, binary sensors and actuators are connected together via AS- Interface. Until now it was necessary to go back to the use of costly conventional wiring when wanting to use absolute encoders. The reason for this was that the handshake mode with the control module of the analogue profile proved to be too slow for positioning tasks. In order to meet the real-time demands of many applications, a multi-slave solution using the BSS58 AS-Interface rotary encoders was created. The position value of 13 Bits in length is transferred within a single cycle via the 4 integrated AS- Interface chips to the master and made available to the PLC. The absolute encoder is mounted directly onto the application shaft, without any coupling. Rotation of the absolute encoder is prevented by a torque rest. This may simply be a slide-in pin that locks in the plastic receptacle integrated into the flange. Technical data General specifications Detection type photoelectric sampling Device type Singleturn absolute encoder Electrical specifications No-load supply current I0 max. starting current 155 mA , operating current max. 85 mA Linearity ± 1 LSB Output code programmable, Gray code, binary code Code course (counting direction) programmable, cw ascending (clockwise rotation, code course ascending) cw descending (clockwise rotation, code course descending) Interface Interface type AS-Interface Resolution Single turn 13 Bit Overall resolution 13 Bit Transfer rate max. 0.167 MBit/s Standard conformity AS-Interface Connection Connector type V1, M12, 4-pin Standard conformity Degree of protection DIN EN 60529, IP65 Climatic testing DIN EN 60068-2-3, no moisture condensation Emitted interference EN 61000-6-4:2007 Noise immunity EN 61000-6-2:2005 Shock resistance DIN EN 60068-2-27, 100 g, 11 ms Vibration resistance DIN EN 60068-2-6, 10 g, 10 ... 2000 Hz Ambient conditions Mechanical specifications Material housing: powder coated aluminum flange: aluminum shaft: stainless steel Mass approx. 330 g Rotational speed max. 10000 min -1 Moment of inertia 30 gcm 2 Starting torque ≤ 2 Ncm Tightening torque, fastening screws max. 1.8 Nm Shaft load Angle offset 1 ° Axial offset max. 1 mm
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 Singleturn absolute encoder BSS58 Release date: 2019-01-09 11:47 Date of issue: 2019-01-09 t37281_eng.xml Dimensions Electrical connection Signal V1 connector, 4-pin Explanation AS-Interface + 1 Reserved 2 Not wired AS-Interface - 3 Reserved 4 Not wired 4H7, 10 deep Recessed hollow shaft 4 (6 deep) 4H7 ø 12H7 ø 30 30° ø 4H7 8.8 3.5 68.1 35.525.2 17.5 143 2
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 Singleturn absolute encoder BSS58 Release date: 2019-01-09 11:47 Date of issue: 2019-01-09 t37281_eng.xml When readdressing by means of a bus master or a programming device, it is absolutely essential to assign different addresses to the four integrated AS-Interface chips. The four parameter bits of slave A are used to set the parameters of the rotary encoder. The parameter bits of slave B, C and D are not used. From the AS-Interface master to the rotary encoder Data from the AS-Interface master are transferred to the rotary encoder via slave A, which works bidirectionally. Slaves B, C and D work unidirectionally, i.e. they are incapable of receiving data. When a change is made in data bits D2 and D3 from 01 to 10 or vice-versa, position data are resaved in the rotary encoder. From the rotary encoder to the AS-Interface master Depending on the value of parameter bit P1 of slave A, data transfer to the AS-Interface master takes place with or without flag bits. P1 = 1: Transfer without flag bits P1 = 0: Transfer with flag bits MA, MB, MC, MD Address assignments for the four slaves The AS-Interface master accesses all slaves one after the other within an AS-Interface cycle in order to transfer output data to slave A or to read in input data from the slaves. The singleturn absolute encoder uses only four AS-Interface chips to transfer the position data that are 13 bits wide, i. e. four slave addresses are assigned. Since these four slaves are queried one after the other, the data may originate from any one of four different sampling times. To minimise the influence of this effect, sequential addresses (n, n+1, n+2 and n+3) should be assigned to slaves A, B, C and D. Furthermore, it should be noted that slave A is responsible for controlling the functions of the absolute encoder. If the order of the slaves is changed (D = n, C = n+1, B = n+2, A = n+3), the output word, which is supposed to be transmitted by the function control module of the absolute encoder, will not be transmitted until slaves D, C and B have been read in. Addresses Slave A Slave B Slave C Slave D Preset address 1 2 3 4 I O c o d e 7000 I D c o d e FFFF Parameter bits Status of parameter bit Slave A P0 P1 P2 P3
0 Gray code Transfer with flag bi ts Descending counting direction for clockwise rotation Not used
1 Binary code Transfer without flag bits Ascending counting directio n for clockwise rotation Not used
00 Normal mode Position data are not saved! 01 Rotary encoder is set to ¼ of the sing leturn resolution. Position data are saved! 10 Rotary encoder is set to 0. Position data are saved! 11 Normal mode Position data are not saved! Slave A Slave B Slave C Slave D D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3 Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Bit 8 Bit 9 Bit 10 Bit 11 Bit 12 Not used! Slave A Slave B Slave C Slave D D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3 D0 D1 D2 D3 Bit 0 Bit 1 Bit 2 MA Bit 3 Bit 4 Bit 5 MB Bit 6 Bit 7 Bit 8 MC Bit 9 Bit 10 Bit 11 MD Operating modes
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 Singleturn absolute encoder BSS58 Release date: 2019-01-09 11:47 Date of issue: 2019-01-09 t37281_eng.xml A memory command would thus only take effect for slave A. The command would not take effect for slaves that were already read until the next read cycle. Data consistency would be lost because of the change of order. Temporary storage and transfer with flag bits If individual telegrams of the four slaves to the AS-Interface master suffer interference, it may happen in spite of temporary storage in the rotary encoder that the data that are transferred to the control module do not all originate from the same position data set. Transferring one flag bit for each slave makes it possible for the control module to check which position data set an individual data set belongs to by comparing the four flag bits. Data bit D2 is used for this purpose. Example: Bit D2 is influenced by the control module. Bit 4 of the input data corresponds to the value of this bit for each slave. D2 is set to 0 in cycle 1. If the value of bit 4 of a slave were "1", that value would be derived from another cycle. This is a simple way to recognise data consistency. Transferring the flag bits, however, reduces the usable position data from 13 bits to 12. Masking out the fourth bit of each slave increases slightly the effort of putting together the position data set in the control module. Slave A Data bit D2 Position data Cycle Slave A Slave B Slave C Slave D 1 0 XXX0 XXX0 XXX0 XXX0 2 1 XXX1 XXX1 XXX1 XXX1 3 0 XXX0 XXX0 XXX0 XXX0 4 1 XXX1 XXX1 XXX1 XXX1 etc. Order code BS 58N AVR0NN Bit combinations Multiturn (see table) Singleturn 0016 (16 bit = 65,536) Option 2 N Not expanded Output code N Selectable, binary/Gray Option 1
0 No option
AV Plug connector M12 x 1, 4-pin Shaft dimension/flange version 01A Recessed hollow shaft Ø10 mm x 21 mm 02A Recessed hollow shaft Ø12 mm x 21 mm Housing material N Aluminium, powder coated Principle of operation M Multiturn S Singleturn Shaft version S Recessed hollow shaft Data format B AS-Interface