Catalogs >
TWK-ELEKTRONIK GmbH >
Magnetostrictive displacement transducer MSK

Magnetostrictive displacement transducer MSK
4Pages

Catalog excerpts

Magnetostrictive displacement transducer MSK - 1

i-TWK. ELEKTRONIK- MAGNOSENS Magnetostrictive Displacement Transducers Model series MPK / MSK with EtherCAT interface ■ Model MPK: Profile version ■ Model MSK: Rod version ■ Measuring strokes from 25 to 7600 mm ■ Contactless, robust system ■ Resolution up to 1 pm ■ Up to 5 positions measurable simultaneously ■ Speed signal ■ Transmission rate up to 100 MBit/s ■ Parameterisable via the bus ■ Protection types up to IP 67 ■ Operating temperature range -40°C ... +75°C ■ Rod version pressure stability up to 350 bar Structure and operation The displacement transducers operate according to the principle of run time measurement between two points of a magnetostrictive waveguide. One point is determined by a moveable position ring, whose distance from the null point corresponds to the section to be measured. The run time of an emitted impulse is directly proportionate to this section. Conversion to a displacement signal takes place in the downstream electronics. The waveguide is housed in a pressure-resistant stainless steel tube or extruded profile. To the rear of this is a die-cast aluminium housing containing the electronics in SMD technology. In the rod version, the position magnet is located in a ring, which is guided over the rod without contact. In the profile version, it is located either in a slider, which is linked to the moving part of the machine via a ball joint, or it moves as a liftable position magnet, without wear, over the profile. Standard measuring strokes □ Up to 1000 mm in 50 mm steps □ Up to 5000 mm in 250 mm steps (profile version: MPK) □ Up to 7600 mm in 250 mm steps (rod version: MSK) Characteristics of the EtherCAT interface The MXK magnetostrictive displacement transducers meet all EtherCAT requirements and can be connected directly to the field bus. Their measured data are converted to displacement-proportionate, bus-capable output signals in the sensor and are transmitted directly to the control system. In addition to useful data transmission, software integrated into the sensor supports extensive monitoring and diagnostic functions, which can be configured via the enclosed XML file during installation. Use of the CANopen over EtherCAT message enables parameters and diagnostic data to be handled as usual in the case of CANopen. The most important key data of the displacement sensors with EtherCAT interface include: Sensor output signals: - 4-byte position data - 4-byte speed data - 2-byte status and error messages Selectable parameters: - Measuring direction: Forwards/backwards - Resolution - Extrapolation Address setting: Manual setting of the node address and the baud rate is omitted. The network subscribers only have to be selected and arranged according to their sequence in the EtherCAT master. XML file: The XML file for integrating the sensor into the EtherCAT master system and the user manual in PDF format are contained in the enclosed CD-ROM. TWK-ELEKTRONIK GmbH ■ PB. 10 50 63 ■ D-40041 Dusseldorf ■ Tel.: +49/211/96117-0 ■ Fax: +49/211/96117-0 ■ info@twk.de ■

Open the catalog to page 1

Magnetostrictive displacement transducer MSK - 2

EtherCAT mating connector M12 connector D-coded 4-pin Die-cast zinc, nickel-plated, straight Pins, gold Cage tensioning spring Max. 0.75 mm2 6 - 8 mm IP 67 M8 connector, A-coded, 4-pin Plastic, straight CuZn, CuSn Screws Max. 0.5 mm2 Max. 5 mm ■ Connection type: ■ Contacts: ■ Cable type: ■ Cable cross-section: ■ Cable diameter: ■ Protection type: The LEDs (green/red) in the sensor head are used for setting and additionally provide information on the sensor status. ■ Connection type: ■ Housing: ■ Contacts: ■ Wire connection: ' ■ Connection cross-sec.: ■ Cable diameter i ■ Protection type:...

Open the catalog to page 2

Magnetostrictive displacement transducer MSK - 3

Order code formats Electrical and mechanical variants* M = connector version M8 / M12 Number of magnets: 1 - 5 Resolution = 1 pm (Adjustable via EtherCAT) Signal sense: S = positively ascending on movement from the flange towards rod end (Adjustable via EtherCAT) Measuring stroke in mm Design MSK (rod): 1 = with threaded connection M 18 x 1.5 2 = with threaded connection 16 UNF % “ MPK (profile): 1 = position slider central ball joint 2 = position slider front ball joint 3 = liftable position magnet Model MPK = profile version MSK = rod version Industrial Ethernet data cable with M12...

Open the catalog to page 3

Magnetostrictive displacement transducer MSK - 4

Magnetostrictive Displacement Transducers MPK / MSK Dimensions in mm Model: MSK (rod version) 51 Metal connector Threaded connection Set null point Sensor head Standard position ring PR02 Positioning ring Measuring range Installation zone Damping zone With measuring strokes of 1000 mm and over, mechanical rod support is recommended. The sensor’s fastening should be manufactured from non-magnetic materials (e.g.: brass, plastic). Note installation instruction MWA10318 on installation in magnetisable materials. Model: MPK (profile version) Front ball joint Sensor head Metal connector Central...

Open the catalog to page 4