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***Read chapter 1 of your operators manual before undertaking any work in the area of the servo motor and drive equipment.***

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Felt Guard Cylinders

Picture A: Grinding Head Up, BOTH cylinders are fully extended, BOTH sensors are made.

(1) Clamp               (2) Height adjustment cylinder                          (3) lifting and lowering cylinder

Picture B: Grinding Head Up, BOTH cylinders are fully extended, BOTH sensors are made.

(1) Height adjustment cylinder , +CAB -46B3 (NO Contact, high signal, contact is closed when cylinder is fully extended, grinding head is up).

(2) Lifting and lowering cylinder , +CAB -46B1 (NO Contact, high signal, contact closed when cylinder is fully extended, grinding head is up).

Functional Description:

Picture C: Zero Plate

1. The grinding wheel is positioned above the zero plate on the table.
2. The lifting and lowering cylinder (Picture A/Cylinder #3) is retracted to lower the grinding head.
3. The sensor on the lifting and lowering cylinder (Picture B/Cylinder #2) is free (LED off / signal low).
4. After the sensor (picture B/Cylinder #2) gives a low signal to the PLC input, a timer is started.
5. When the timer has expired the height adjustment cylinder (Picture A/Cylinder #2) retracts until the grinding wheel rests on the zero plate (picture C).
6. The sensor (Picture B/Cylinder #1) is free (LED off / signal low).
7. After the sensor (Picture B/Cylinder #1) gives a low signal to the PLC input, a second timer is started.
8. When the second timer has expired the clamp is activated and the air pressure is equaled out to lock the height adjustment cylinder rod in position.
9. The lifting and lowering cylinder is now extended again to lift the grinding head off the zero plate and we begin to grind the EDI.

• The basic position for the grinding head is up with both cylinders extended and both sensors made (inputs high signal to PLC).