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Error Message F12

Valid for S300, S400, S600, S700

Display Meaning Possible cause Measure S300/S700 Measure S400/S600
F12  Motor Phase  Shield on the motor cable is badly attached or missing  Check the shield connections  Check the shield connections 
Strong external EMC interference  Additional design of motor shields on the mounting plate of the switchgear cabinet.  Additional design of motor shields on the mounting plate of the switchgear cabinet. 
Motor cable capacity is too high  Use a motor choke / Shorten the cable /  Use Kollmorgen cables  Use a motor choke / Shorten the cable /  Use Kollmorgen cables 
Installed motor contactor does not switch on time.  Check contactor  Check contactor 
Installed motor contactor has burnt contacts.  Check contactor  Check contactor 
Hardware faulty  Return the servo amplifier to manufacturer for repair  Return the servo amplifier to manufacturer for repair 
Motor connector not plugged in the servo amplifier or motor.  Check connector  Check connector