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Error Message F14

Valid for S300, S400, S600, S700

Display Meaning Possible cause Measure S300/S700 Measrue S400/S600
F14  Output Stage

Short circuit in the motor cable 

Replace motor cable 

Replace motor cable 

Output stage faulty 

Return the servo amplifier to manufacturer for repair 

Return the servo amplifier to manufacturer for repair 

Insulation fault in the motor 

Conduct measurements with an ohmmeter between the motor phases: must be symmetrical. Measure the motor phases to the PE; it must be unending. If there is a high-voltage tester available, use it to measure the motor phases to PE. 

Conduct measurements with an ohmmeter between the motor phases: must be symmetrical. Measure the motor phases to the PE; it must be unending. If there is a high-voltage tester available, use it to measure the motor phases to PE. 

Motor contactor does not switch on time. 

Check the switching sequence 

Check the switching sequence 

Motor contactor has burnt contacts. 

Replace motor contactor. 

Replace motor contactor. 

Short circuit in the electric circuit for the external braking resistor 

Check, rectify short circuit 

Check, rectify short circuit 

Wrong motor cable Check assignment amplifier - motor cable - motor Check assignment amplifier - motor cable - motor
Motor cable shield not connected Connect shield on both sides (motor and amplifier) Connect shield on both sides (motor and amplifier)
auxiliary power level is too low Check the auxiliary power source. The manual data have to be considered.  Check the auxiliary power source. The manual data have to be considered.