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FU / CCI - ERROR 84
Error Frequency converter recognises excess speed.
During rotation the speedometer pulses (6 per revolution) are
controlled by the frequency converter. This control is independ-
ent from the control panel.
The frequency converter switches the centrifuge off, when the
maximum speed of the rotor is exceeded more than 500 rpm.
Cause of error
• Flat ribbon cable is defective.
• Frequency converter is defective.
Measurement Also see at supply board-X4 (PIN 4) and frequency converter -
S501 (PIN 8).
FU / CCI - ERROR 85
Error “Watchdog” in frequency converter
Discrepancy in program procedure
Cause of error
• Flat ribbon cable is defective.
• Frequency converter is defective.
Error code reset Perform a MAINS RESET.
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