The following procedure is intended to be used as a diagnostic tool for determining general causes for X Y Positioning System Motor failures and Motion Faults. Using a known good motor, an attempt will be made to isolate the problem between there motor, or the other system issues. UsethisprocedureonlyonGeneration8,SingleHeadMachinesequippedwithBrushedMotors(referencepartnumber42418104).
Ifyouhavetoreplacea Motor, pleasereturnittoBinghamtonintheboxthereplacementcomesin.
Good Motor, Blue Kendall grease (40833810) for leadscrew, 10W (40833827) oil for ball bushings & axis shafts, Phillips head screw driver, Allen wrenches
F/E SKILLS REQUIRED:
X-Y Home Zero Set-up
Installing X-Y Positioning system motors
ESTIMATED TIME TO PERFORM PROCEDURE:
30 minutes if no problems found
3 hours if motor is found to be defective
5 + hours if other system problems are found INFORMATION (please fill out)
In this step, you will be running a single axis at reduced speed & acceleration while observing the Max DAC output, which is proportional to the torque. If the torque is too high, this may indicate motor or positioning system problems.
LAUNCH IM DIAGNOSTICS
Run “Quick Start” Select #1 “Set-up BEC”
When macro is done zeroing (quit don’t save) to exit “set-up BEC” screen
Select: DIAGNOSTICS, MANUAL DIAGNOSTICS
On the LEFT side, click the pull down menu of the “SECTION” box. Select “UIMC 1 AXIS INPUTS”
Click the BLUE “MOVE” button & edit the following parameters: Speed from 116 to 10
Acceleration from 2400 to 500
Click the Auto Cycle & Continuous Run check boxes Cycle the axis from 0” to 18” or 0 count to 144,000 count
Observe the “Maximum DAC Output During Move” number for approximately 5 minutes and fill out the STEP 1 CHART below.
If the number ever gets above 340 maximum, the system has too much friction. It could be the motor or other system problems.
If the “Maximum DAC output during move” is less than 340. Stop. No further steps are required for this Axis.
This Axis appears to be functioning correctly.
Proceed to STEP 2
In this step you will perform specific PM activities that have a large impact on the amount of torque required to
operate the positioning system.
Grease the lead screw, oil the shafts & re-tension the belt.
Cycle at normal speed and acceleration for ½ hour, check the appropriate box below.
Cycle at the reduced Speed & Acceleration per STEP 1 and fill out the STEP 2 CHART below. If it gets considerably better (Max DAC below 340) you’re done. If not, go on to STEP 3.
In this step you are removing the motor in preparation for Step 4 and making further investigation into possible sources of high positioning system friction.
Remove the motor and move axis by hand.
Feel and listen for binds, hesitations or noises in the lead screw and/or ball bearing/shafts.
Check axial play/gap in the lead screw by grabbing it by hand & pushing in both directions. There should be no perceivable axial play in the leadscrew.
|Replace any parts that you think it has problem.|
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