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Motor & Electrical (Cont.)
Symptom
Possible Cause
Machine has
7. Spindle bearings at fault.
vibration or noisy
operation.
8. One or more stepper driver(s) have
incorrect DIP switch configuration.
9. One or more stepper driver(s) at fault.
10. One or more axes ball screw(s)/bearing(s)
are damaged or binding.
Machine Operations
Symptom
Possible Cause
Axis will not
1. One axis not moving.
move after
controller receives
commands.
2. All axes not moving.
Axis movement
1. Ball screws worn.
and location not
2. Ball screw/motor coupler worn.
repeatable.
One or more axes
1. Interface board/motor connection loose.
only move in one
2. Incorrect machine parameters.
direction.
3. Interface board at fault.
4. Stepper motor at fault.
5. Stepper driver at fault.
One or more axes
1. Direction wire and pulse wire in wrong
will not move.
place on interface board.
2. Stepper motor disconnected.
3. Stepper motor at fault.
4. No pulse signal from interface board.
Inconsistent cutting
1. Loose cutter.
depth.
2. Spoilboard not flat.
3. Z-axis ball screw has too much movement.
4. Workpiece loose.
5. Z-axis tool setter at fault.
6. Z-axis limit switch at fault.
7. CAM/G-code at fault.
Machine fails to
1. Incorrect machine parameters.
home, or moves
2. Faulty connection.
beyond soft limits
3. Limit switch not aligned.
when homing.
4. Loose limit switch wire.
5. Limit switch at fault.
6. Interface board at fault.
7. 50-pin data cable at fault.
Model G0931 (Mfd. Since 02/21)
Possible Solution
7. Test by rotating spindle; rotational grinding/loose
shaft requires bearing replacement.
8. Adjust stepper driver DIP switch configuration
(Page 47).
9. Test wire continuity between stepper driver and
stepper motor; repair/replace if at fault. Test/repair/
replace stepper driver.
10. Inspect ball screw(s)/bearing(s) on each axis for
damage, corrosion, and debris.
Possible Solution
1. Check connection to motor. Check 50-pin
connection to interface board. Adjust stepper driver
DIP switch configuration (Page 47).
2. Inspect 50-pin cable and interface board
connection. Inspect power supply to stepper motors.
Inspect mechanical components. Adjust stepper
driver DIP switch configuration (Page 47).
1. Inspect/repair.
2. Inspect/repair.
1. Inspect connections and ensure all are tight.
2. Verify machine parameters (Page 23).
3. Inspect/replace plugs and sockets.
4. Inspect/replace plugs and sockets.
5. Adjust stepper driver DIP switch configuration
(Page 47).
1. Rewire direction/pulse wiring.
2. Reconnect stepper motor.
3. Inspect/repair/replace.
4. Replace interface board.
1. Tighten spindle collet (Page 27).
2. Clean/resurface spoilboard (Page 28).
3. Inspect/tighten/replace if needed.
4. Secure workpiece with clamps (Page 28).
5. Test/replace.
6. Test (Page 45)/replace.
7. Review G-code and correct errors.
1. Verify machine parameters (Page 23).
2. Find/secure connection.
3. Inspect/adjust limit switch.
4. Secure connection.
5. Test (Page 45)/repair/replace limit switch.
6. Inspect/replace if needed.
7. Replace cable.
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