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Measurement Imbalance switch, plug ST6 pin 1 to Pin 4.
Switch is an opener. See also section 11.2.4.
Error code reset Open the lid after standstill
– 4 – Communication
Error Communication error between control board (A3) and power
board (A1).
Error
consequence
Drive switches off and rotor runs down unbraked.
Error cause
• Loose contact in flat ribbon cable.
• Control board (A3) defective.
• Power board (A1) defective.
Error code reset MAINS RESET after standstill.
If the MAINS RESET is performed before the rotor has standstill,
the set speed and the rotation will be indicated in the display until
the rotor has standstill.
– 5 – Overload
Error Power board detects overload.
Error
consequence
Drive switches off and rotor runs down unbraked.
Error cause
• Power board (A1) defective.
• Motor defective (windings or bearings)
Measurement Measure motor coils, see section 11.2.1.
Error code reset Perform a MAINS RESET after standstill
– 7 – Overspeed
Error System recognises excess speed.
Error
consequence
Drive switches off and rotor runs down unbraked.
Error cause
• Power board (A1) defective.
Error code reset Perform a MAINS RESET after standstill.
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