Installation Manual

Troubleshooting 8-59

Y-Axis Rotary Encoder Verification

1. In FmNT Dispenser Terminal Window, type M301 and press [Enter] on the Keyboard. A numerical

value should appear. Note the value returned.

WARNING! CAUTION!

Use caution when reaching your hand into the dispensing chamber while system

is under power. Failure to take appropriate precautions could result in injury or

property damage.

2. Manually move the Dispensing Head in the Y-axis.

3. Again, type M301 and press [Enter]. Note the value returned.

4. Are the two numerical values from Step 1 and Step 3 different?

Go to Step 13

Go to Step 5

5. Manually move the Dispensing Head to the mechanical hard stops in the front left corner of the

dispensing chamber.

6. Type M301 and press [Enter] on the Keyboard. Note the value returned.

7. Manually move the Dispensing Head in random directions at different speeds trying to cover the

entire dispensing chamber.

8. Return the Dispensing Head to the mechanical hard stops in the front left corner of the dispensing

chamber.

9. Again, type M301 and press [Enter]. Note the value returned.

10. Record the difference between the numeric values noted in Step 6 and Step 9.

11. Repeat Steps 5 through 10 three times.

12. Is the difference of any set of values greater than 200 counts?

Y-axis Rotary Encoder is not root cause of the

following error fault. Go to Step 7 in “PMAC Fatal

Following Error Verification” in 8.2.1, PMAC

Initialization Fault Isolation Procedure to verify.

Rotary Encoder may be faulty. Contact Asymtek Technical Support

13. Remove the Servo Motor Cover located at the rear of the dispensing system below the Servo Shelf.

14. Rotary Encoder Cable (P/N 06-4535-00) should be connected to the Y-axis Servo Motor Amplifier at

J3 labeled Rotary Encoder and the Y-axis Servo Motor.

Yes