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User Manual
MP40E, version 1.2.0, valid for M-227.10, M-227.25, M-227.50
CBo, 5/20/2019
Physik Instrumente (PI) GmbH & Co. KG, Auf der Roemerstrasse 1, 76228 Karlsruhe, Germany
Page 17 / 26
Phone +49 721 4846-0, Fax +49 721 4846-1019, Email
Troubleshooting
General Notes on Troubleshooting
NOTICE
Damage due to mechanical overload of the bellows coupling!
The bellows coupling of the actuator is a sensitive part that can be damaged if handled
improperly.
Avoid bending forces on the bellows coupling.
Avoid pull forces on the bellows coupling.
INFORMATION
For details on the different parts of the actuator, see “Product View” (p. 9).
INFORMATION
Abbreviations used in this section:
CW: clockwise
CCW: counterclockwise
Actuator Got Stuck at the Hard Stop
If the M-227 is driven into a hard stop, the spindle may get jammed so that the M-227 cannot
retract any more.
Unblocking the Actuator Electrically
If the M-227 got stuck at the hard stop, you can try to unblock it by applying an external DC
voltage of 15 V.
Requirements
You have disconnected the M-227 from the electronics.
The power supply to be used is switched off, i.e.,
not
connected to the power source.
Tools and accessories
DC power supply with a variable output voltage