ROLIVAM TACHOGENERATORS are designed and produced by a leading manufacturer of precision A.C. and D.C. servomotors. They have been designed to stop, position, accelerate or change direction without cogging and with fluctuations of less than 1.5 % (pp).
Electro-mechanic configuration with winding on 2 parallel branches, four brushes (2 on each line), a coppersilver alloy commutator with a great number of segments, good surface finish, rare-earth permanent
magnets, very low inertia and high manufacturing quality.
This means that the ROLIVAM TACHOGENERATORS insure reliable transmission of the output signal and contributes to the ultrafast response in situations where rapid reversals are an essential element in the servo-drive system, without cyclic variation.