Combined Units

The 4-pole TOP 439 H D.C. hollow shaft tacho-generators are measure- ment converters for measurement, control and regulation technology. The function of these permanently excited D.C. generators is to convert the speed at which they are driven into a speed-proportional D.C. voltage. The sizing and quality of the silver-graphite brushes used, do guarantee long maintenance-free operation. Brush life is however extremely dependent on ambient conditions and speed. For normal operating conditions it is approx. 15.000 operating hours. Mechanical Design • low profile, short machine in A4 construction...

Dimension Drawings for D.C. Hollow Shaft Tacho-Generators Deviation ot terminal box positioi For details of tacho bore diameter, see also type code. Bore fittings reference included in type code. hollow shaft armature Stator housing Drive machine • Micro-adhesive coated screw (reusable) Disc and screw for axial retaining (only on request) max. hollow shall bore dia 30 on request The smaller overall dimensions and the lower prices are the advantages. with connecting cable with plastic terminal Drive machine and tacho armature shaft connection as described above.

Selection table Technical Data Rated voltage tolerance: Harmonic voltage: Linearity error: Preferred voltages Reversing error: Temperature coefficient: Winding test: compensated magnet system uncompensated magnet system Temperature range D.C. tacho and incremental encoder type FG 4. The incremental encoder type FG 4 is a robust unit for very extreme ambient and operational conditions, ol high reliability and long lile time Its lunction is to convert the speed into a proportional frequency and to generate further digital signals. Johannes Hiibner • Fabrik elektrischer Maschinen GmbH • D-35394...