ABB YXM152 4890024-ABF/1 Sequence control module

When a torque is applied to the output of a Harmonic Drive® Gear with the input locked, the torque-torsion relationship measured at the output typically follows, starting from point 0, the successive points the hysteresis curve A-B-A'-B'-A (see figure). The value of the displacement B-B' is defined as the hysteresis loss.

Lost Motion (Harmonic Drive® Gears) [arcmin]

 Harmonic Drive® Gears exhibit zero backlash in the teeth. Lost motion is the term used to characterise the torsional stiffness in the low torque region. The illustration shows the angle of rotation ϕ measured against the applied output torque as a hysteresis curve with the Wave Generator locked. The lost motion measurement of the gear is taken with an output torque of about ± 4 % of the rated torque.

Maximum DC bus voltage UDC (max) [VDC]

 The maximum DC bus power supply for the correct operation of the actuator. This value may only be exceeded for a short period during the braking or deceleration phase. Maximum hollow shaft diameter dH (max) [mm] For gears with a hollow shaft, this value is the maximum possible diameter of the axial hollow shaft. Maximum input speed (grease lubrication) nin (max) [rpm] Maximum allowable input speed with grease lubrication for short period. The maximum input speed can be applied as often as desired, as long as the application's average speed is lower than the permitted average input speed of the gear.

                                                                        

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