DC tachogenerators

DC tachogenerators are manufactured for installation as a sensor of the rotational speed of the motor or in control systems as a feedback loop.

We are the manufacturer of the PATO 78-14 tachogenerator. The standard version we produce, used in the servomotors, has a fixed voltage ratio of kE = 31,5V / 1000 rpm.

In our offer, you will also find tachogenerators based on PATO 78-14, equipped with windings adapted for different voltages which were created as a response to our customers’ needs.

Parameter Symbol Unit Value Tolerance
Voltage KE V/1000min-1 31,5 ±10%
Armature resistance RT Ω 80 ±10%
Armature inductance LT mH 90 ±30%
Load resistance RO 6,8
Max. rotational speed nmax obr/min 4000 max
Voltage unbalance ΔUa % 1 max
Non-linearity ΔUL % 0,5 max
Voltage pulse W % 1 max
Harmonic slot pulsation φλ 33
Moment of inertia of the rotor It kgm2*10-6 0,77
Friction torque MF Nm*10-3 1,8 max
Permissible angular acceleration ε rad*s-2 10 4 max
Temperature deviation kΔt % / OC -0,02 max
Weight of the generator G kg 0,6

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