Shuttle Troubleshooting

Common Problems

Last Updated: Friday, October 7, 2022

CAUTION: DISABLE ALL MACHINE POWER AND OBSERVE LOCKOUT PROCEDURES PRIOR TO MAKING ANY ADJUSTMENTS TO THE MACHINE. FAILURE TO DO SO COULD RESULT IN SEVERE EMBARRASSMENT, INJURY OR DEATH.

PROBLEM: POWER ON LAMP won't illuminate.
SOLUTION: 1. Check E-STOP.
2. Ensure gates are closed and main power is on. The touch screen message banner will display the current status.
3. Check HMI display and see of Power Off message is displayed. If not, replace indicator light.
PROBLEM: Machine won't go into AUTO.
SOLUTION: 1. Machine is in an error condition; check display for error, reset or home machine as needed.
2. Control power is not on; see above.
PROBLEM: Multiple pieces of glass slipping through and being sent to next station.
SOLUTION: 1. Glass loaded too close together on Infeed Conveyor. Distance from light to light should be an absolute minimum of 6".
2. Sensor dirty. Clean with a clean dry cloth.
PROBLEM: Glass won't transfer from Shuttle Infeed to Shuttle.
SOLUTION: 1. Not in cycle or in cycle stop. Press START button.
2. Glass data missing or incorrect. Check Line Status on nearby operator interface.
3. Check machine status display message on Line Status screen.
4. SHUTTLE INFEED or OUTFEED OUTFEED CLEAR sensor is blocked or dirty. Shuttle cannot move to infeed position. Check; clean.
PROBLEM: Glass won't transfer from Shuttle to Spacer Applicator Infeed
SOLUTION: 1. Not in cycle or in cycle stop. Press START button.
2. Spacer Applicator Infeed not in Auto Mode. Check the Spacer Applicator touch screen; select Auto and press START.
3. Sensor dirty. Clean with a clean dry cloth.
4. Glass data missing or incorrect. Check Line Status on nearby operator interface.
5. Base or Cap glass missing. Check; adjust; update display.
6. Glass set to feed through front only or back only but glass present both front and back.
7. Check machine status display message on Line Status screen.
8. SHUTTLE INFEED or OUTFEED OUTFEED CLEAR sensor is blocked or dirty. Shuttle cannot move to outfeed position. Check; clean.
PROBLEM: VFD / Blower / Conveyor doesn't run.
SOLUTION: 1. Check function by manually jogging conveyor from HMI after resetting.
2. Cycle e-stop power.
3. Check for missing data, glass.
4. Check part present sensors.
5. Check fuses
6. Check ethernet cable connections and routers.
7. On recently replaced hardware, confirm all parameters are correctly entered and the IP address is correct and not overlapping existing active addresses. Check data link parameters (Powerflex 525s: C153-C160)
PROBLEM: Axes seem to jerk from position to position.
SOLUTION: 1. Check AXIS SPEED, ACCEL or DECEL PARAMETERS, may be too high.
PROBLEM: Servo Communication Error
SOLUTION: 1. Normal on power-up. Home.
2. During regular operation, check logic voltage connections.
3. Check ethernet connections, try different patch cables. Look for IO faults on PLC's LED indicators.
4. Make sure that all servo drives controlled by PLC are powered on. Note some servo drives may be in the cabinet of other machines.
PROBLEM: Frequent Servo Errors.
SOLUTION: 1. Normal on main cabinet power-up. Home.
2. During regular operation, reset. If the problem persists, see below.
PROBLEM: Frequent Servo Errors. Position Error:
SOLUTION: 1. Position error tolerance set too low; see plc program.
2. Axis Torque Limit set too high; check & adjust - note: if the torque limit is set beneath a certain point (determined by the friction & inertia of the mechanical power-train) the motor will not be able to move.
3. Axis Accel / Decel / Speed set too high, check & adjust.
4. Poor Servo Cable connections; check motor cable connections at both the motor and drive sides.
5. Servo cable failure. Check & replace.
PROBLEM: Frequent Servo Errors. Position Error:
SOLUTION: 1. Position error tolerance set too low; see plc program.
2. Axis Accel / Decel / Speed set too high, check & adjust.
3. Poor Servo Cable connections; check motor cable connections at both the motor and drive sides.
4. Servo cable failure. Check & replace (if replacing, consider using 'high flex' cables).
5. Mechanical binding; check & clear.
PROBLEM: Frequent Servo Errors. Feedback Error; Encoder Fault.
SOLUTION: 1. Poor Servo Cable connections; check cable connections at both the motor and drive sides.
2. Servo feedback cable failure. Check & replace (if replacing, consider using 'high flex' cables which are rated by millions of bend cycles.).
PROBLEM: Frequent Servo Errors. Hall Effect Error
SOLUTION: 1. Poor Servo Cable connections; check feedback cable connections at both the motor and drive sides.
2. Servo feedback cable failure. Check & replace (if replacing, consider using 'high flex' cables).
PROBLEM: Frequent Servo Errors. IPM Motor Fault / Over Temp / Over Current Fault
SOLUTION: 1. Poor Servo Cable connections; check motor cable connections at both the motor and drive sides.
2. Servo cable failure; check & replace (if replacing, consider using 'high flex' cables).
3. Drive failure; check and replace.
4. Stray wires shorting out terminals on drive; check and fix as necessary.
5. Binding or interference during homing; check and clear any binding / blockages. Note: a servo axis must NEVER be able to move so that the home sensor is on the "wrong" side of the home flag.
PROBLEM: Servo Error: Duplicate address found.
SOLUTION: Another device has been added to the network with the same IP address. Check for recent additions. Isolate and track down using "ping" and other computer tools. Cycle power.
PROBLEM: Anything you can't figure out.
SOLUTION: CALL ERDMAN AUTOMATION AT 763-389-9475