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Vibration sensor NVA system description

Vibration sensor NVA system description
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Vibration sensor NVA system description - 1

TWIC ELEKTRONIK Specifications for vibration sensor NVA65-A552S-1 -Bxx (and similar designs) Acceleration measurement for wind power plants with analogue output and programming interface standard CAN CANopen DS 301 For additional information, refer to data sheet NVA 12634 and filter specifications for each single version. TWK-ELEKTRONIK GmbH Heinrichstrasse 85 info@twk.de www.twk.de

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Vibration sensor NVA system description - 2

CAN specifications, acceleration sensor NVA Datum: 21.11.2018 Page 2 of 51 Document no.: NVA 12657 GE

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Vibration sensor NVA system description - 3

CAN specifications, acceleration sensor NVA

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CAN specifications, acceleration sensor NVA Datum: 21.11.2018 Page 4 of 51 Document no.: NVA 12657 GE

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CAN specifications, acceleration sensor NVA The sensor system is intended as a component for use e.g. in wind power plants to measure and evaluate vibrations in the mast head. Registration of dynamic accelerations by means of MEMS sensors (Micro-Electro-Mechanical System) with subsequent digitisation by a controller. The device consists of an acceleration sensors, a controller unit and three types of output interface. Data output is carried out via two analogue interfaces with 4 ... 20 mA plus CANopen and via 4 relay contacts (currently 1 error relay contact). The NVA is parameterised via...

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CAN specifications, acceleration sensor NVA Evaluation of the switching points of the alarm and warning level outputs takes place at the filter output. On evaluation of the switching points, conversion to the output value amount always takes place, irrespective of the filter's measurement type setting. The CANopen interface can be used to set the parameters and call up the 6 filters' outputs. With the exception of the filter characteristics, all parameters are programmable. For further information concerning the electrical and mechanical specification please refer to datasheet NVA12634,...

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CAN specifications, acceleration sensor NVA

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CAN specifications, acceleration sensor NVA Flow diagrams Figure 1: System in complete

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CAN specifications, acceleration sensor NVA Anwendungsparameter Filtereinstellungen Limiteinstellungen Relais Konfiguration Abgleichparameter Array T_FILTER_OUT Priorität: 4 Delay: 10 Stackgröße: 100 Priorität: 4 Delay: 10 Stackgröße: 100 Priorität: +2 Delay: Stackgröße: 100 Priorität: +1 Delay: Stackgröße: 100 Priorität: +1 Delay: Stackgröße: 100 Priorität: +0 Delay: Stackgröße: 100 Priorität: +0 Delay: Stackgröße: 100 Priorität: +0 Delay: Stackgröße: 100 CAN Priorität: 1 Delay: Stackgröße: 100 Datentyp: CANOPEN_TRANSMIT_MSG Länge: 8 PDO Datentyp: CANOPEN_MSG Länge: 4 NMT Datentyp:...

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Vibration sensor NVA system description - 10

CAN specifications, acceleration sensor NVA 2 CANopen functionality 2.1 General The software is equipped with the standard CANopen stack (TWK development). The baud rates are implemented according to the following table. The baud rate of 20 kBit/s is defined as the default setting. Bit timing table EMC error codes: 0x FFFF 0x8120 0x8140 0x8110 Customer-specific error, error in the sensor system Passive error status Return from bus off status Overrun error; a message has been lost Error register codes, see object 1001. The data are implemented on the bus in Intel format. Datum: 21.11.2018...

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CAN specifications, acceleration sensor NVA A distinction is made between two types of error: 1. Error in the sensor system (error code OxFFFF) All errors which render proper operation of the sensor impossible. 2. Communication error (error code 0x81xx) Errors due to the bus system; these are not usually caused by the sensor but indicate a malfunction in the bus system. The user of the overall system must assess errors in the bus system and determine his reaction on this basis. Examples: EEPROM CRC error Datum: 21.11.2018 Page 11 of 51 Document no.: NVA 12657 GE

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CAN specifications, acceleration sensor NVA Table of all objects contained in the profile Datum: 21.11.2018 Page 12 of 51 Document no.: NVA 12657 GE

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Datum: 21.11.2018 Page 13 of 51 Document no.: NVA 12657 GE

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The following meanings apply: rw read/write M mandatory according to profile O optional according to profile Datum: 21.11.2018 Page 14 of 51 Document no.: NVA 12657 GE

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3.2 Process data objects PDO The outputs of those filters which are not connected to an analogue output are represented in the PDOs. The data are output in Intel format. PDO 1/2 Datum: 21.11.2018 Page 15 of 51 Document no.: NVA 12657 GE

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CAN specifications, acceleration sensor NVA Datum: 21.11.2018 Page 16 of 51 Document no.: NVA 12657 GE

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CAN specifications, acceleration sensor NVA 3.3.3 Object 1005 COB-ID-SYNC Identifier of the sync message which is transmitted from the master. No range or plausibility check takes place. 29-bit identifiers are not supported. The node address is added to the selec Datum: 21.11.2018 Page 17 of 51 Document no.: NVA 12657 GE

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CAN specifications, acceleration sensor NVA 3.3.8 Object 1010 store_parameters On inputting "save” as the password in sub-index 01, all writable objects are saved to the E2PROM. The object cannot be changed on writing. Reading the object is possible. 1 (saving via command, page 93 DS 301 4.1) is returned. Store_parameters Datum: 21.11.2018 Page 18 of 51 Document no.: NVA 12657 GE

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CAN specifications, acceleration sensor NVA 3.3.12 Object 1017 producer_heartbeat_time If a value greater than zero is entered here, the heartbeat message on the identifier guard COB ID + node ID is transmitted in the producer_heartbeat_time interval in ms. Producer_heartbeat_time 1) Written in factory programming status. Datum: 21.11.2018 Page 19 of 51 Document no.: NVA 12657 GE

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CAN specifications, acceleration sensor NVA The process data are output via two process data objects (PDOs). MSB LSB 1) On reading (upload), the node address is added to the selected identifier. Datum: 21.11.2018 Page 20 of 51 Document no.: NVA 12657 GE

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TWTC ELEKTRONIK CAN specifications, acceleration sensor NVA 3.5 Mapping objects 3.5.1 Object 1A00 transmit PDO 1 mapping The parameter contains the following coding for each "mapping” object: Datum: 21.11.2018 Page 21 of 51 Document no.: NVA 12657 GE

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