TWK-ELEKTRONIK GMBH

This involves a play-free electronic switching cam encoder (abbreviated to: NOCE) with a maximum of four galvanically separated SIL2 switching outputs that can be set by the customer, and which are activated or deactivated depending on the respective position of the drive shaft. A parameterisable multiturn absolute encoder with SSI interface and the switching cam encoder PCB with separate controller are integrated in the compact housing. The SSI interface can be preset, the encoding direction is adjustable and the switching outputs can be preset. A special shaft design appropriate to the play-compensating measurement gear ZRS is available. The supply voltage, SSI signal and switching contacts are each galvanically separated from one another.

The linear movement of a flexible steel cable, which can have a length of up to 2 m, is converted into an angular movement with the aid of a measuring drum. The measuring drum is coupled via a gear to a conductive plastic potentiometer. The restoring force of the spring drive holds the measuring cable tight at all times and prevents any sagging which would otherwise induce an error. The measuring drum moves axially on a spindle ensuring that the cable is wound up precisely and reproducibly wrap for wrap in the helical groove of the drum. The cable entry contains a brush to remove dust.

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 magnet, 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 digital measuring 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. Electrical connection is implemented via a circular connector. 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.

Rectangular case in anodised aluminium - Shaft in stainless steel - Shaft entry either with floating guidence against dust (AF) or with lip seal (AG) to protection grade IP 65 - Conductive plastic resistance elements - Precious metal wipers - Axial connector or axial or radial cable exit - Ball joints at shaft end and / or case on request.

This involves a play-free electronic switching cam encoder (abbreviated to: NOCA) with a maximum of 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. A parameterisable multiturn absolute encoder with analogue interface plus the switching cam encoder printed circuit board with separate controller are integrated into the compact housing. The analogue signal and switching outputs can be parameterised separately using multifunction pins (MFP and PRE) in the connector.

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 magnet, 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 digital measuring 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. Electrical connection is implemented via a circular connector. 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

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 magnet, 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 measuring 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.

Please note that this product is an accessory. In the "Products" section you will find the corresponding encoders that you can order for your selected article. The linear movement of a 2000 mm long, flexible high strength steel measuring cable is converted into a rotational movement by a measuring drum. The measuring drum, which has a circumference of 102.4 mm, is coupled to the shaft of the encoder. A change of displacement in the measuring cable then corresponds to a change in angle on the shaft of the angle encoder. The restoring force of a spiral spring holds the measuring cable tight and prevents errors due to slackness. The cable is wound with adjacent turns in a reproducible manner on the drum due to the movement of the drum on a spindle.

This involves a play-free electronic switching cam encoder (abbreviated to: NOCN) with a maximum of 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. A parameterisable multiturn absolute encoder with CANopen interface plus the switching cam encoder printed circuit board with separate controller are integrated into the compact housing. The encoder's CANopen position signal and the switching outputs can be parameterised separately. Parameterisation is carried out via the relevant CANopen objects in accordance with the encoder profile according to CiA, DS 406, revision 4.01. The NOCN has a fault monitoring system which outputs a fault message via the CANopen bus (emergency message) on detection of a fault.

Please note that this product is an accessory. In the "Products" section you will find the corresponding encoders that you can order for your selected article. The linear movement of a flexible steel cable, which can have a length of up to 60 m, is converted into an rotary movement with the aid of a measuring drum. The measuring drum is connected to the shaft of an encoder. In this way a change in displacement of the measuring cable causes the shaft of the encoder to rotate by a directly proportional amount which can be recorded. The restoring force of the spring drive holds the measuring cable tight at all times and prevents any sagging which would otherwise induce an error. The measuring drum moves axially on a spindle ensuring that the cable is wound up precisely and reproducibly wrap for wrap in the helical groove of the drum. The nozzle, through which the cable enters the drum, is protected with a brush and a bellow to prevent water or dust entering the drum.