Colombo USA

Technical Guide – Troubleshooting

1. What to do if the electric spindle doesn’t work?
First of all, check the following conditions:

Is the inverter protection present?
Check the manual or ask to the inverter manufacturer.

Are S1 sensor or SP sensor damaged or disconnected?
- Check the connectors;
- Check the continuity and the integrity of the electrical connections;
- Contact the GC Service.

Is the rotation acting denied?
Check the manuals or contact the machine, CNC and inverter suppliers, which the electric spindle is connected to.

Are there foreign bodies between the tool shaft and the electric spindle?
Remove the macroscopic impurities and carry out the maintenance as shown on the manual.

The tool-holder taper doesn’t fit to the required one?
Choose a tool-holder according to the manual instructions.

Doesn’t the clamping unit open due to lack of pressure?
Check the integrity and the efficiency of the pneumatic circuit.

2. Doesn’t the tool-holder hook up?
First of all, check the following conditions:

Is the S2 sensor connected, damaged?
- Check the connectors;
- Check the continuity and the integrity of the electrical connections;
- Contact the GC Service.

Is there a check error?
- Check the pressure values required;
- Check the integrity and the efficiency of the pneumatic circuit.

3. Isn’t the tool-holder ejected?
First of all, check the following conditions:

Is the pressure enough?
- Check the pressure values required;
- Check the integrity and the efficiency of the pneumatic circuit.

Is the tool ejection acting possible?
Check the manual or contact the machine supplier which the electric spindle is connected to.

4. Is there pressurization lack?
First of all, check the following conditions:

Is the pressure enough and the pneumatic circuit efficient?

- Check the pressure values required;

- Check the integrity and the efficiency of the pneumatic circuit;

- Contact the GC Service.

5. Doesn’t one of the sensors provide the the output required?
First of all, check the following conditions:

Is the sensor disconnected or damaged?

- Check the connectors;

- Check the continuity and the integrity of the electrical connections;

- Contact the GC Service

6. What to do if the elctic spindle gets overheated?
First of all, check the following conditions:

Are there cooling problem?

- Check the specifications of the cooling circuit within the manual;

- Check the integrity and the efficiency of the cooling hydraulic circuit;

- If the problem persists, contact tha GC Service.

Is the working too heavy?

Reduce the heaviness of the working.

Is the inverter parameters adjustment correct?

Check on the electric spindle nameplate or within the use manual that the parameters are the correct ones.

Is the voltage correct?

Check on the electric spindle nameplate or within the use manual that the voltage parameters are the correct ones.

7. Are the performances of the electric spindle inferior to the specifications?
First of all, check the following conditions:

Is the inverter parameters adjustment correct?

Check on the electric spindle nameplate or within the use manual that the parameters are the correct ones.

Is the voltage correct?

Check on the electric spindle nameplate or within the use manual that the voltage parameters are the correct ones.

8. Does the electic spindle vibrate?
First of all, check the following conditions:

Is the tool-holder balanced?

Choose the correct tool-holder according to the use manual instructions.

Is the tool balanced?

Choose the correct tool according to the use manual instructions.

Are there foreign bodies between the tool-holder taper and the spindle shaft?

Remove the macroscopic impurities and carry out the cleaning as shown on the manual.

Is the working too heavy?

Reduce the heaviness of the working.

Are the fastening screws well locked?

Check that the fastening screws are not loose.

Are the bearings damaged?

Contact the GC Service.

9. Are the bearings noisy?
First of all, check the following conditions:

Are the bearings damaged?

Contact the GC Service

10. Doesn’t a sensor read properly?
First of all, check the following conditions:

Is the sensor broken or damaged?

Replace this sensor.

Has the sensor lost the original position?

Adjust the sensor swinging it as long as it shows the correct signal.