Hermle Z 326 Service Instruction page 42

Error No. 41: Communication with frequency converter disturbed during stop
• Cause:
• Solution:
Error No. 42: Short circuit in the frequency converter
• Cause:
• Solution:
Error No. 43: Undervoltage frequency converter
• Cause:
• Solution:
Error No. 44: Overvoltage frequency converter
• Cause:
• Solution:
Error No. 45: Over temperature frequency converter
• Cause:
• Solution:
Error No. 46: Over temperature motor
• Cause:
• Solution:
Error No. 47: Over current frequency converter
• Cause:
• Solution:
Error No. 48: Timeout between control unit and frequency converter
• Cause:
• Solution:
Page 42 of 48
Frequency converter is defective
Restart the unit;
Check if the cable is out tight;
Replace the frequency converter
Frequency converter is defective
Replace frequency converter
Drop of the supply voltage
Restart the unit;
Check the supply voltage;
Check supply wire for further units
Replace frequency converter
Brake resistance is defective
Check brake resistance;
Select lowest brake level and restart the unit
Frequency converter is defective;
Replace frequency converter
Cutoff of the frequency converter caused by over temperature
Take care of enough ventilation
Temperature safety switch of the motor will switch off
Take care of enough ventilation
Motor bearing defective, replace motor
Frequency converter is defective
Replace frequency converter
Software of the control unit has a black out
Restart the unit;
Control unit is defective
SERVICE INSTRUCTION Z 326
8 TROUBLE SHOOTING
© HERMLE Labortechnik GmbH
Version 01/2010