Switching cam encoder NOCN/S3 SIL2/PLd


Catalog excerpts

Switching cam encoder NOCN/S3 SIL2/PLd - 1

Electronic switching cam encoder Absolute encoder Models NOCN / S3 with SIL2 Certificate / CANopen  Cam switch with encoder and safety-cams SIL2  Encoder, singleturn or multiturn without cams (see NOC 13292)  Play-free version for use instead of electromechanical switching cam encoders  For use in stationary and mobile machines and systems, particularly for wind turbines, power plants, cranes, etc.  Up to four electronically controlled SIL2- switching outputs: Normally open contacts  Integrated absolute multiturn encoder with CANopen Safety / CANopen interface  Parameterisable via CANopen bus  Option: Special slewing ring software for non-reversing operation - Robust housing manufactured from seawater-proof aluminium (AlMgSi1) or stainless steel (material: 1.4305 optionally 1.4404). - Shaft fitted with ball bearings bears the magnet for recording the angular position and the drive gear of the multiturn transmission for absolute revolution counting. - Shaft and transmission are located in the prechamber. Sealed off from this, the main chamber contains all electronic components for position recording, evaluation and output. - Available Versions: Ø 58 mm with different flange and shaft designs. 2 x relay NO contacts SIL2 at maximum. Ø 64 mm (standard) with clamping collar and M6 threaded holes plus two device connectors. 2 x relay NO contacts SIL2 at maximum. Ø 79 mm (on request) with clamping collar, M6 threaded holes. 4 x relays NO contacts SIL2 at maximum. - Electrical connection for voltage supply, switching out puts and CANopen data via M12 connectors or cables. The number of connectors or cables varies (up to a maximum of three) depending on version or customer specifications. - Output via SRDO and PDO possible. PDO is independently adjustable. The two/four switching contacts are SIL2 certified safety contacts. They are suitable for the safety chain. TWK-ELEKTRONIK GmbH Heinrichstrasse 85

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Switching cam encoder NOCN/S3 SIL2/PLd - 2

General functional principle This involves a play-free electronic switching cam encoder (abbreviated to: NOCN) with two (At version 79 four) galvanically separated switching outputs (cams), which can be set by the customer and which are activated or deactivated depending on the relevant position of the drive shaft. An absolute mulitturn encoder with CANopen interface, adjustable parameters and an electronic switching cam module is realized in the compact housing. A separate controller unit monitors the function of the cams. The encoder's CANopen position signal and the switching outputs can...

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Switching cam encoder NOCN/S3 SIL2/PLd - 3

(Code 'S' in order code number) Slewing ring functionality This slewing ring functionality is only valid for models NOCN without cams. In some applications it is necessary to get directly the angle of the slewing unit. A rotary encoder is coupled via a gear to a toothed gear or with a worm gear / gear units mounted on the worm shaft. This results in a certain ratio due to the number of teeth. The software in the encoder can be set (by the factory or the customer) in a way that the output signal of the encoder is the angle position of the slewing unit. The angle resolution can be set for...

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Switching cam encoder NOCN/S3 SIL2/PLd - 4

Model NOCN / S3 Principle circuit diagram (Design of switching outputs) 2 of 4 shown drive from drive from Controller Controller contact evaluation Controller emergency shut down relays drive from Controller contact evaluation Controller drive from Controller contact evaluation Controller drive from Controller drive from Controller relay monitoring Technical data Electrical data n Sensor system: ASIC with HALL elements n Operating voltage range: 4096 steps / 360° - 12-bit or 8192 steps / 360° - 13-bit At version NOCN79 up to 15 bits possible (32.768 steps / 360°) 4096 revolutions, (option...

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Switching cam encoder NOCN/S3 SIL2/PLd - 5

Mechanical data ■ Operating speed: ■ Angular acceleration: ■ Moment of inertia (shaft): ■ Operating torque: ■ Starting torque: ■ Perm. shaft load: ■ Bearing service life: ■ Weight: 1000 rpm (option 2000 rpm) (Remark: Shaft with sealing ring: 105 rad/s2 max. 20 gcm2 < 8 Ncm (at speed 500 rpm) < 4 Ncm 250 N axial 250 N radial 109 revolutions Approx. 0.8 kg max. 1000 rpm. Else use Nilos ring) Environmental data ■ Operating temperature range: ■ Storage temperature range: ■ Maximum relative humidity: ■ Resistance: □ To shock: (DIN EN 60068-2-27) □ To vibration: (DIN EN 60068-2-6) ■ Protection...

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Switching cam encoder NOCN/S3 SIL2/PLd - 6

Order code number NOCN 64 - KP A 2 - 4096 R 4096 S3 Standard version Electrical and mechanical variants: 01 Standard 38 Like standard but with shaft seal Interface: N CANopen (SSI or inkremental output ^ On request) Galvanic separation *. (See pages H, 12): V1 -VS * CAN_GND * screening/housing ^ Recommended V2 -VS = CAN_GND * screening/housing V3 -VS = CAN_GND = screening/housing Electrical connections (see remark on pages H, 12): ^ Combine any kind and number of desired connection 1 = 1 connection S Via device connector M12, radial T Via device connector M12, axial (at NOCN79 only on...

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Switching cam encoder NOCN/S3 SIL2/PLd - 7

Function A CAN controller at the output enables integration into the CANopen network. According to "CANopenApplication Layer and Communication Profile, CiA Draft Standard 301, Version 4.1" and according to "Device Profile for Encoders CiA Draft Standard Proposal 406 Version 4.01" and "CANopen Layer Setting Services and Protocol (LSS), CiA DSP 305". Parameters for the absolute encoder's position signal, which is output via the process data objects (PDO), can be parameterised via the bus in order to adapt the NOCN to the application. The details of the CANopen profile are exhaustively...

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Switching cam encoder NOCN/S3 SIL2/PLd - 8

PDO - data format Data byte 0 Note: SRDO is valid for CANopen Safety Profile. PDO is valid for CANopen Standard profile. When using PDO the NOCN behaviour is like a CANopen Standard device. It depends on resolution and measuring range how many bits are significant data bits (i.e. 24 (bit 0 to 23) for 12 bits resolution and 12 bits measuring range). Function The function of the switching outputs (cams) is implemented by means of relays. The relays have normally open contacts. The contacts are galvanically separated in terms of operating voltage and the CANopen bus. The switching outputs are...

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