66
1018856
08/2018 V04
Inductance (L-L) L
L-L
[mH]
Terminal inductance calculated without taking into account the magnetic saturation of the active motor parts.
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 current I
max
[A]
The maximum current is the maximum current that can be applied for a short period.
Maximum DC bus voltage U
DC (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 d
H (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) n
in (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.
Maximum input speed (oil lubrication) n
in (max)
[rpm]
Maximum allowable input speed for gearing with oil 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.
Maximum motor speed n
max
[rpm]
The maximum allowable motor speed.
Maximum output speed n
max
[rpm]
The maximum output speed. Due to heating issues, this may only be momentarily applied during the operating cycle. The
maximum output speed can occur any number of times as long as the calculated average speed is within the permissible
continuous operation duty cycle.
Maximum output torque T
max
[Nm]
Specifies the maximum allowable acceleration and deceleration torques. For highly dynamic processes, this is the maximum
torque available for a short period. The maximum torque can be parameterised by the control unit where the maximum
current can be limited. The maximum torque can be applied as often as desired, as long as the calculated average torque is
within the permissible continuous operation duty cycle.
Torsion
φ
Torque T
~ +4 % T
N
~ -4 % T
N
Lost M
otion
φ
1
;
φ
2
φ
1‘
;
φ
2‘
