With the new LI inductive angular measuring system, Hengstler has a linear measurement system for measuring positions and speeds even under difficult conditions. This new system, characterised by its extreme accuracy, is non-sensitive to contamination and mechanical influences. With its non-contact measuring principles, it can handle rev. counts up to 1,200 n/min.

It produces highly accurate 1 Vss sine output signals displaced by 90° with a distortion factor < 1%. These are particularly suited for high resolution interpolation in the sequencing control, up to 0.25µm. 

Optionally, the system can be delivered with interpolation already integrated in the read head which can deliver resolutions from 50 µm to 5µm edge distance as TTL – RS 422 signals. Beside the incremental track, there are also reference marks on the measuring flange to determine the absolute angular position. There are different versions available depending on the application or on the customer requirements as well as several standard versions: single reference marks cyclically positioned or distance coded reference marks for the pseudo-absolute positioning.

• Feedback for linear motors
• Metal processing
• PCB production
• Electronic assembly
• Wood processing equipment
• Punches and presses

Functions and features

LI/MS delivers sine/cosine signals to determine drive position and speed. With real-time signal processing speeds, users can get the best out of their servo control systems 

• Incremental signals a & B and Z pulse: sine 1Vss or TTL according to RS 422
• Travel speed up to 1,200 m/min
• Resolution up to 0.25 µm
• accuracy 20 µm/m
• Measuring length up to 30 m
• Non-contact measurement for maintenance-free operation
• Non-sensitive to magnetic fields, dust, dirt, grease, oil or water

3 different installation versions to cover most applications:

• Self-adhesive measurement tape
• Measurement tape pre-mounted on aluminium profile
• Guided system

With the new AI inductive angular measuring system, Hengstler has an encoder system for measuring angles, revolutions and speeds in locations where up to now, it has not been possible to build in a conventional encoder. This new system, characterised by its extreme accuracy, is non-sensitive to contamination and mechanical influences. With its non-contact measuring principles, it can handle rev. counts up to 20,000 1/min.

It produces highly accurate 1 Vss incremental sine/cosine output signals with a distortion factor < 1%. These are particularly suited for high resolution interpolation in the sequencing control. Optionally, the system can be delivered with interpolation already integrated in the read head which can deliver more than 200,000 positional steps per revolution as TTL – RS 422 signals.

Beside the incremental track, there are also reference marks on the measuring flange to determine the absolute angular position. Depending on the application two versions are available; single reference marks or multiple distance coded reference marks.

The AI system is particularly suited for use with:

The AI angular measurement system delivers incremental sine/cosine outputs to determine the speed and position of the drive shaft. With interpolation, improvements can be achieved in the drive system‘s positional accuracy and synchronism through resolutions of up to 4 million measuring steps.