Abstract: In a circuit arrangement for textile machines having a plurality of identical aggregates, each having a drive motor (1), particularly for spinning machines having individually driven spindles, respective motor bars are provided for the connection of each aggregated. Each motor bar is connected with a ground plate which is provided with energy supply lines and has a predetermined number of bar connectors. At least the energy supply lines of a minimum of two ground plates are connected with each other and with a connecting line (9) common to them which leads to a central energy supply device (2) of the machine.

Abstract: To regulate the speed of a plurality of asynchronous motors fed by a converter having a variable output frequency and output voltage and having a load-dependent slip, particularly asynchronous motors for driving spindles of a textile machine, the rotational frequency of several selected asynchronous motors is measured by means of respective digital frequency indicators. This measurement takes place in continuous repetition, always beginning simultaneously. The pulses of the frequency indicators are counted by means of respective first counters (1-6), all of which release a pulse when they reach the same counter condition. An OR circuit (13-17) connects the counter outputs with a second pulse counter (18) in such a manner that this condition is reached first by the output pulse released by the highest rotational frequency and then by the output pulses released by the second-highest rotational frequency, etc.