CP : control panel, FC : frequency converter, SB : supply board, CB : cooling board, CC : control cable, LL : lid locking, BC : braking chopper,
BR : brake resistor, MR : mains reset
20/49
FU / CCI - ERROR 63
Error cause Overcurrent.
Error remedy
• Short circuit in motor.
• Motor impedance is too low.
• CC is defective.
• FC is defective.
FU / CCI - ERROR 64
Error cause Voltage in intermediate circuit:
>410 V DC at 230 V
>205 V DC at 115 V
This error normally only occurs when the drive is being braked.
Error remedy
• BR is defective.
• CC is defective.
• FC is defective.
Measurement Also see at FC, U
DC.
FU / CCI - ERROR 67
Error cause Only centrifuges with 115 V.
Overtemperature in the motor. The cable “overtemperature” in
the motor has high impedance.
Error remedy
• Overtemperature switch opens because of overtemperature
in the motor
• CC is defective.
• FC is defective.
• Motor is defective
Measurement Also see at FC, remove plug S2 and measure at the plug
Switch closed: ≈ 0 Ω
opened: ∞ Ω
FU / CCI - ERROR 68
Error cause Overtemperature in FC.
Error remedy
• Insufficient heat abduction from FC to centrifuge housing.
There is no, or not enough, heat-conducting paste between
FC and housing.
• Full-load operation and an ambient temperature > 45°C.
• CC is defective.
• FC is defective.
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