Festo EXCM-10, Repair Instructions

Page: 47 / 52

47 / 52 Festo 7EXCMc_en
Adjusting the toothed belt pre-tension
If the measured natural frequency is outside the specified range, the toothed belt pre-tension must be adjusted as
follows:
Turning the socket head screws clockwise increases the toothed belt
pre-tension, and turning the socket head screws anticlockwise decreases the
toothed belt pre-tension.
5. Adjust the toothed belt pre-tension by turning the socket head screws
evenly in the pulley housings.
Before you measure the toothed belt pre-tension again, the Y-axis and the
slide must be moved back and forth manually a number of times to compen-
sate for differences in tension.
6. Set the distance between the motor pulley housing and the Y-axis to 90 mm
again.
7. Check the toothed belt pre-tension again as described above.
8. If the toothed belt pre-tension is within the permitted range, screw the
threaded pins into the pulley housing and tighten them to a torque of
2.4 Nm ±10 %.
4.2.4.6 Final steps
1. Push the covers inwards against the base profile of the axis.
2. Swivel the cover downwards and clip the cover into the cylindrical dowel
pin.
Caution
Every time the controller is restarted, and thus every time the planar surface gantry is repaired, it must be re-homed.
Further information is available in the
Chapter 5 on page 48 and in the “Commissioning” description. They can be
found on the Festo website (  www.festo.com ).