PI M-228 Series, User Manual, Page: 11 / 49

2 Safety
M­­228 / M­­229 Linear Actuators MP86E Version: 2.0.0 7
2.2.3 Safety Measures when Starting and Operating
There is a risk of crushing and minor injuries between the moving pusher of the M-228 / M-229
and a stationary part or obstacle.

Keep your fingers at a safe distance from the motion range of the pusher.

Do not place any objects in areas where they can get caught by the pusher.
The M-228 / M-229 may move unintentionally when connecting it to the controller. Faulty
software and incorrect operation of the software may also cause unintended movements.

Do not place any objects in areas where they can be caught by moving parts.

Before connecting the M-228 / M-229, check whether a macro is defined as the startup
macro in the controller and cancel the selection of the startup macro if necessary.
Connecting a linear actuator to an unsuitable controller can damage the linear actuator or
controller.

Connect a linear actuator with stepper motor to a stepper motor controller only.
The collision of moving parts with the hard stop (end of travel range), as well as high
acceleration, can cause damage to, or considerable wear on the mechanical system.

In the event of a malfunction of the motor controller, stop the motion immediately.

Ensure that the end of the travel range is approached at low velocity.

Set your control signal so that the moving part does not stop abruptly or try to continue
moving at the end of the travel range.

Determine the maximum velocity for your application.

Ensure that the automatic limit switch halt is supported by the controller, or that it is
activated in the controller.
2.2.4 Safety Measures During Maintenance
The M-228 / M-229 is precisely aligned.

Do not loosen any sealed screw.