Angular Position Transducers

Transcription

1 Angular Position Transducers

2 Angular Position Transducers Construction Measuring systems For measuring angular positions and converting them into electrical signals for teletransmission purposes, either potentiometric (see data sheet precision rotary potentiometer ), inductive, magnetic, incrementally or absolutely coded angular position transducers can be used according to the particular application. Inductive angular position transducers of the non-contacting type are preferably used on measuring points, which are exposed to extreme vibration or shock or to aggressive atmospheres. This applies mainly to measurement problems one is confronted with in energy industry and chemical plants, for instance while measuring the actual value of the position of variable speed drives, or of machines in paper-processing and textile industry, while measuring the position of dancer rollers and very frequently in pendulum systems for measuring tilt angles on cranes and excavators. Optoelectronic angular position transducers possess code disks, whose tracks are digitally scanned. They are high-resolution measuring systems with low temperature coefficient, available in a single- or multi-turn version, outputting analogue or digitally coded signals. Single-turn transducers are used e. g. in the railway vehicle domain in connection with master controllers or on cranes as slewing ring transmitters. Multi-turn transducers are preferably used together with rope length measuring systems on hauling plants, bearer cable winches of crane systems or in the field of machine tool engineering for sensing the tool position. potentiometric inductive magnetic optoelectronic Magnetic angular position transducers are extremely robust measuring systems completely hermetically encapsulated of two-chamber design with a protection degree of IP 8. In shaft exit design e. g. they are used to record the angular position of a permanent magnet mounted on the measuring object. Transducers of this type are predominately used in commercial vehicles for sensing the position of steering type axles or the angle of the articulated arm of excavators. Transducers with shaft exit also contain a hermetically encapsulated electronic unit. They are universally used in mechanical engineering exposed to extreme atmospheres in order to record angular positions. Signals of the single- or multi-turn version are output either analogue as current or voltage signals or digital as CAN open configuration. Potentiometric angular position transducers contain a highr e s o - lution resistance element of conductive plastic with a linearity of ± 0. %. Signals are output either in form of a resistance, current or voltage variation. N S C ma

3 System versions series WD and PK differential inductor or resistance element ma Inductive transducer systems (WD) are available as models of synchro size 0 (series 0) and synchro size (series 0). They contain a differential inductor designed in form of a ring winding with a non-contact tapping. The electrical output signals representing zero and final value of the mechanical drive shaft angle are available within a broad range of limits via trimming potentiometers of the incorporated or separate electronics. For use in explosive installations, transducer systems as well as electronic components are available with a degree of protection EEx and Exd with ATEX approval. Potentiometric transducer systems (PK) are also available in synchro sizes 0 and. They contain an incorporated signal converter with current or voltage signal output. series MR and MH permanent magnet N S sin/cos ma Magnetic transducer systems (MR and MH) are available as models of synchro sizes 9,, 0 and. They are fully enclosed in an aluminium casing of two chamber design and contain a permanent magnet with a high-precision angular encoder. Signals are output either analogue, e. g. with - 0 ma, or digitally coded (CAN open standard). Output signal of transducers with analogue output can be programmed via rear keys of transducer to the respective measuring range. For safety-relevant applications these systems are also available in redundant version according to IEC 508 (SIL). CAN Interface series Xi and XA coded disk ma CAN Interface Optoelectronic transducer systems (XI and XA) are available as models of synchro size in incremental of absolutely coded design. Incremental systems convert the angle to be measured into a proportional number of pulses, appearing in two tracks A and B with an offset of 90 for identification of direction. Absolutely coded systems are available as single- or multi-turn encoders. They contain a gray-coded rotating disk whose concentric tracks are optically scanned by infrared diodes and phototransistors. Signals are output parallel via NPN or PNP transistors or analogue via a digital-to-analogue converter with current output - 0 ma. All transducers can also be supplied with field bus interface CAN open standard and in user-specific data format respectively.

4 Specifications System versions Models Magnetic systems -fold system Series MH 09 MH MH 0 MR 0 MR 0 ext Xi / MR 0 Single-turn / multi-turn Synchro size Casing - Shaft - Dimensional sketch page / Angle of rotation max. Revolution max. Voltage output Current output Pulse output Bus output Redundant electronics Signal adjustment via Linearity Resolution Supply Current consumption IP code of casing up to Connection Weight Approval Root of FSG ident # ± 0.5 % 9. mm V multi-turn 080 bit 5 V DC IP stranded wire 00 g ± % bit.5 mm - 0 ma keys ± 0. % V DC IP 5 multi-turn 50 bit 00 g mm 5 x - 0 ma x - 0 ma cable ± 0. % bit x or x V DC IP cable 00 g 0 / 0 mm and 8-0 ma CANopen multi-turn 00 keys or CAN-Bus ± 0. % bit V DC IP8 / cable special size external magnet - 0 ma ± 0. % bit V DC IP8 / cable 00 g TÜV / 0 mm - 0 ma / 0 pulses ± 0. % bit / 0 pulses x V DC IP8 / cable 0Z0 0Z0 0Z0 50Z0 85Z0 550Z0 555Z0 5850Z0 50Z0 00 g 500 g General data Casing material Shaft material Shaft bearing Temperature range Test voltage Immunity standard Emission standard Shock Vibration Current output Voltage output Supply voltage alu, anodized, partly vanished, special version: saline-resistant coating HART-COAT stainless steel ball bearing -0 C up to 0 C, other ranges on request 500 V, 50 Hz, min EN EN g, ms g Sinus 5-00 Hz R 00 wire system, and wire system on request L R 0 k wire system L 8 - V DC, other supply on request

5 System versions Models optoelectronic systems inductive systems potentiometric systems Series XA 0 Xi 0 WD 0* WD 0* PK 0 PK 0 Single-turn / multi-turn Synchro size Casing - Shaft - Dimensional sketch page / Angle of rotation max. Revolution max. Voltage output Current output Pulse output Bus output Redundant electronics Signal adjustment via Linearity Resolution Supply Current consumption IP code of casing up to Connection Weight Approval Root of FSG ident # bit / 0 mm / 8-0 ma CANopen multi-turn 00 50Z0 ± 0, % V DC IP 00 g bit incremental / 0 mm n x continuous A, B and zero track 800 pulses / V DC < 50 ma IP 00 g external electronics see page 8 ext. electronic ext. electronic 0 g mm ± 0.5 % IP0 0-0 V - 0 ma trimmer V DC < 0 ma Atex 0 g / 0 mm 0-0 V - 0 ma trimmer ± 0.5 % V DC 0 ma IP 00 g Atex mm V - 0 ma trimmer ± 0. % V DC 0 ma IP 0 0 g / 0 mm V - 0 ma trimmer ± 0. % V DC 50Z0 50Z0 80Z50 95Z0 500Z0 5Z0 50Z0 0 ma IP 00 g * series WD also available in intrinsically safe version, see page 8 Switching version wire wire wire color of stranded Terminal connecting plan wire or cable cable / stranded wire supply Us V- or ma -poles V- or ma 5-poles output supply Us output 0 V 0 V supply Us 0 V CAN output Low High Green Brown Yellow White 5 solder-type terminals

6 Models. stranded wires. solder-type terminals. -0. h MH 09 - MU MH MU h h.5-0. h MH - MU MH - - MU WD 0 WDG 0 WD 0 - MU WDG 0 - MU PK 0 - MU

7 . TK - 8 / M 0 0 PG screwing with 5 cable outlet f 5 50 f 5 h h N S 5 h, 0 TK - 0 / M MH 0 - MU MH 0 II - MU MR 0 - MU ext TK- / M * also 0 h * also 0 h 8 TK- / M WD 0 WDG 0 PK 0 XA CAN XA CAN MR 0 - CAN MH 0 - CAN XI 0 XI / MR 0 MR 0 - MU MH MU XA MU XA MU

8 Characteristics of separate components Signal converter Type WEVI / K Input: signal from transducer series WD Output: 0 or - 0 ma, R L 00 Supply: 8 - V DC or 0 V AC Weight: 00 g Root of FSG ident #: 9Z Signal converter Type WEVI EEX / K Input: signal from transducer series WD Output: 0 or - 0 ma, R L 00 intrinsically safe Supply: 8 - V DC intrinsically safe from NBW Type of protection: CE00 EXII()G[EExib]IIc; PTB-Nr. 0 ATEX 0X Weight: 00 g Root of FSG ident #: 99Z5 Power supply with signal isolator Type NBW EEX / K Input: - 0 ma intrinsically safe Output: - 0 ma electrically isolated from input R L 50 Supply: 0 V AC Type of protection: CE00 EXII()G[EExib]IIc; PTB-Nr. 0 ATEX 050 Weight: 00 g Root of FSG ident #: 89Z0 0 h 0h Protective casing Pressure-tight protection for mounting of all angular position transducers Type / GS0 EEX IP code of casing: IP5 Type of protection: EXII G EEX de IIc T5 PTB-Nr. 0 ATEX 0 Weight: g Root of FSG ident #: 85Z0 000 M/8 deeply 0 0 Further protective casings are available which can partly be equipped with gearings and limit switches, degree of protection up to IP 8 for mounting in installations with increased mechanical and climatic stress (see data sheet protective casings ). Berlin Kablow Heppenheim 8 Fernsteuergeräte Kurt Oelsch GmbH Jahnstraße 8 0 Berlin Phone 9 (0) 9 - Fax 9 (0) info@fernsteuergeraete.de FSG Fernsteuergeräte Meß- und Regeltechnik GmbH Mühlenweg Kablow Phone Fax 9 ( 5) ( 5) 9 - Fernsteuergeräte Kurt Oelsch GmbH & Co.KG Weiherhausstraße 0 Heppenheim Phone 9 ( 5) Fax 9 ( 5) 05 -