Hettich EBA 20S - Page 13

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– 6 – Overvoltage
Error Overvoltage in intermediate circuit.
This error normally only occur when the drive is being braked
Error
consequence
Drive switches off. No brake effective
Error cause
• Power board (A1) defective
• Brake resistor defective
Measurement Measure intermediate voltage, see section 0
Error code reset Perform a MAINS RESET after standstill.
– 7 – Overspeed
Error Overspeed. The speed measured by the speed sensor B3 is
250 RPM higher than the maximum speed of the rotor.
Error
consequence
Drive switches off. No brake effective
Error cause
• Speed sensor (B3) defective
• Power board (A1) defective
Measurement Check the speed sensor, see section 10.2.1
Error code reset Perform a MAINS RESET after standstill.
– 8 – Undervoltage
Error Mains voltage less than 20% as nominal voltage.
Error
consequence
Drive switches off. No brake effective
Error cause
• Mains voltage too less
• Power board (A1) defective
Measurement Check the mains voltage
Measure intermediate voltage, see chapter 0
Error code reset Perform a MAINS RESET after standstill.