Festo Контроллер позиционирования CPX-CMAX - Manual (Page 46)

2. Fitting and pneumatic installation
2−16
Festo P.BE−CPX−CMA X−SYS−EN en 0908NH
1
Favourable natural
vibration behaviour
2
Unfavourable natural
vibration behaviour
1 2
Fig. 2/3: Example: Favourable and unfavourable natural vibration behaviour of the mass
Mass moment of inertia for semi−rotary drives
The mass moment of inertia must not change during the
movement. For this reason, the following applies for the
mounting position, depending on the load:
ć Centre of gravity in the axis of rotation
Mass is rotationally symmetrical:
} any mounting position permissible.
ć Centre of gravity in the axis of rotation
Mass is rotationally asymmetrical:
} only vertical mounting position permissible, drive
shaft points upward or downward (see example Fig. 2/3).
ć Centre of gravity outside of the axis of rotation
(not recommended):
} only vertical mounting position permissible, drive
shaft points upward or downward.