First, without frequency conversion of the spindle does not turn, the cause of the failure and how to deal with it:
1, caused by mechanical transmission failure: check whether the belt drive is broken or whether the machine is hung in neutral.
2, the supply of three-phase spindle power phase or phase reversal: check the power supply, replace any two power lines.
3, the circuit is connected to the wrong: carefully refer to the circuit connection manual to ensure that the connection is correct.
4, the system does not have the corresponding spindle control signal output: use a multimeter to measure the system signal output, if there is no spindle control signal output, it is necessary to replace the relevant IC components or sent to the factory for repair.
5, the system has a corresponding spindle control signal output, but the power supply line and the control signal output line there is a broken circuit or component damage: using a multimeter to check the system and the spindle motor between the power supply circuit, signal control circuit there is a broken circuit; whether there is a broken circuit; whether the contact between the line contact is poor; AC contactor, DC relay is damaged; check the thermal relay is overcurrent; check whether the fuse is burned. Check whether the fuse is burnt, etc.

Second, with inverter spindle does not rotate, the cause of the failure and how to deal with it:
1, caused by mechanical transmission failure: check whether the belt drive is broken or the machine tool is hung in neutral.
2, supply spindle three-phase power supply phase: check the power supply, switch any two power lines.
3, the frequency converter control parameters of the CNC system is not open: consult the system manual to understand the frequency parameters and change.
4, the system and the frequency converter line connection error: check the system and the frequency converter connection manual, to ensure that the connection is correct.
5, analog voltage output is not normal: use a multimeter to check whether the analog voltage output of the system is normal; check whether the analog voltage signal line is connected correctly or poor contact, whether the analog voltage received by the frequency converter is matched.
6, the strong electric control part of the broken circuit or component damage: check the spindle power supply line contacts are connected reliably, whether the line is broken, whether the DC relay is damaged, whether the fuse is burned out.
7, the frequency converter parameters are not adjusted: the frequency converter contains control mode selection, divided into frequency converter panel control spindle mode, NC system control spindle mode, etc., if you do not select the NC system control mode, you can not use the system to control the spindle, modify this parameter; check whether the relevant parameter settings are reasonable.

Third, without frequency conversion spindle (shift spindle) speed is not controlled, the cause of the fault processing methods:
1, the system has no S01-S04 control signal output: check the system has no gear shift control signal output. If not, it is a system failure, replace the IC or sent to the factory for repair.
2, connecting line failure: If the system has a shift control signal output, then check the connection line whether there is a broken circuit or poor contact, check whether the DC relay or AC contactor is damaged.
3, spindle motor damage or short circuit: check the spindle motor.
4、Mechanical not in gear: hang up the gear.

Fourth, the spindle without braking, the cause of the failure to deal with methods:
1, the braking circuit is abnormal or strong electric components are damaged: check the bridge stack, fuse, AC contactor is damaged; check whether the strong electric circuit is disconnected.
2、Braking time is not long enough: adjust the braking time parameters of the system or inverter.
3、System without braking signal output: replace the internal components or send to the factory for repair.
4, the frequency converter control parameters are not adjusted: consult the instruction manual of the frequency converter, set the parameters of the frequency converter correctly.

Fifth, the spindle stops immediately after starting, the cause of the failure to deal with the method
1, the system output pulse time is not enough: adjust the system M code output time.
2, the frequency converter is in the point state: refer to the instruction manual of the frequency converter, set the parameters.
3, the spindle line control components are damaged: check the circuit of the contact contact is good, check whether the DC relay AC contactor is damaged, resulting in contacts do not self-locking
4、Spindle motor short circuit, resulting in thermal relay protection: find the cause of the short circuit, so that the thermal relay reset.
5, the spindle control circuit does not have a self-locking circuit, and set the parameters for the pulse signal output, so that the spindle can not run normally: the system control spindle start-stop parameters to level control mode.

Sixth, the spindle rotation can not be stopped, the cause of the failure to deal with methods:
AC contactor or DC relay is damaged, long time suction, can not control: replace the AC contactor or DC relay.

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