2.2.3 Measures during Start-Up
Do not put your WT-120 into operation until it is fully mounted and
connected.
Your system can be damaged by uncontrolled oscillation of the WT-120.
Noise generated during operation of the WT-120 is a typical sign of
oscillation.
Immediately switch off the servo-control system of the affected rotational
axis.
Check the settings of the servo-control parameters.
Moving parts attached to devices with goniometers can accelerate rapidly
and generate high forces which can cause injury or damage to equipment.
Unintentional motion of the goniometer is possible when it is connected to
the controller for the first time. Defective software or incorrect operation of
the software can also result in unintentional motions.
Do not place any objects in areas where they can be caught by moving
parts.
Collision of a part in motion at the end of the travel range and high
accelerations can cause damage to or wear on the mechanical system.
Ensure that the automatic limit switch halt is supported by the controller,
or that it is activated in the controller.
Do not disable the evaluation of the limit switch signals by the controller.
Check the functioning of the limit switches at velocities between 10 %
and 20 % of the maximum velocity.
In the event of a malfunction of the limit switches, stop the motion
immediately.
Ensure that the end of the travel range is approached at low velocity.
Set the control signal so that the moving part does not stop abruptly or try to
continue motion at the end of the travel range.
Determine the maximum velocity for your application.
2.2.4 Measures during Operation
•If noise occurs during operation of the WT-120, check the settings of the
servo-control parameters of your controller.
Highest dynamic force and holding force are achieved at a control signal
level of 100 %; however, during continuous operation the motor/drive may
overheat.
•During continuous operation at room temperature, do not exceed a
maximum of 90 % of the control signal level.
•For continuous operation at other temperatures, observe the maximum
permissible duty cycle in relation to the ambient temperature or contact
our customer service department for more information (see chapter 9).
2.2.5 Measures during Maintenance
The WT-120 is precision adjusted.
•Do not loosen any sealed screws.
Dirt, oil, lubricants and condensation will render the motor/drive inoperable.
•Keep the piezo motor of the WT-120 free from lubricants.
•Keep the WT-120 free of dirt and condensation.
