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4.6 Motor Reversed Protective Function
When there are hard material appear in the feed box and cutting chamber or for
other reason the cutting blades can not cut, this unit will enable blade shaft
reverse rotating with alarm, it resumes normal operation automatically after 3
seconds later, so to keep granulating material. The alarm dies out after blade shaft
rotates normally. If the motor reverse function be started over 3-4 times or more,
the motor would be stopped. At this time you can press down the STOP button to
cut off the power, and then restart it by press the START button.
Picture 4-4: Motor Reversed Protection
If the rotor has been seized during operation, its working mode is:
Rotor is seized up, auto stop for 1 sec.
→
reverse rotate for 3 secs
→
stop for 1 sec
→
normal rotate
→
A. 1) normal
→
working
2) seized up
→
stop for 1 sec.
→
reverse rotate for 3 secs
→
stop for 1 sec
→
normal rotate
B. 1) normal
→
working
2) seized up
→
stop for 1 sec.
→
reverse rotate for 3 secs.
→
stop for 1 sec
→
normal rotate
C. 1) normal
→
working
2) seized up
→
machine stops
Note: Mount sensor and ensure its space with shaft coupler to
about 2~4mm.
