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ATN7 TR TOO SMALL fault in Parker AC890 drive - This fault comes when the calculated value of rotor time constant is too small. Check the value of nameplate rpm.

ATN6 TR TOO LARGE fault in Parker AC890 drive - This fault comes when the calculated value of rotor time constant is too large. Check the value of nameplate rpm.

ATN5 NEGATIVE SLIP F fault in Parker AC890 drive - This fault comes when autotune has calculated a negative slip frequency, which is not valid. Nameplate rpm may have been set to a value higher than ...

Cause: Magnetizing current fail comes when it was not possible to find a suitable value of magnetising current to achieve the required operating condition for the motor. ATN4 MAG CURRENT FAIL fault in...

ATN 3 NOT AT SPEED fault in Parker AC890 drive indicate that the motor was unable to reach the required speed to carry out the Autotune. Possible reasons include: 1. motor shaft not free to turn 2. th...

Cause : MAINS VOLTS LOW comes when the mains input voltage is not sufficient to carry out the Autotune. This can cause the drive to operate incorrectly or shut down altogether. ATN2 MAINS VOLTS LOW fa...

ATN1 MAX SPEED LOW fault in Parker AC890 drive - During Autotune the motor is required to run at the nameplate speed of the motor. If MAX SPEED RPM limits the speed to less than this value, an error w...

TR32 OTHER fault in Parker AC890 drive indicates that there is more than one faults in drive. This means multiple active faults or a non-specific internal error that doesn't fall under predefined cate...

TRIP UNKNOWN fault in Parker AC890 drive indicates that an error has occurred that is not specifically recognized or defined by the drive's software. Potential Causes and Solutions: Software Glitch...

Cause: INTERNAL DB RESISTOR comes when there is an hardware issue in drive power card. This fault comes when an issue with the internal Dynamic Braking (DB) resistor circuit DBCT INT DB RESISTOR fault...

Cause : ANALOG INPUT ERROR comes when analog input is incorrectly configured for 4-20mA operation. When an analog input error occurs, the machine may have difficulty accurately reading and responding ...

Cause : OVERSPEED comes when speed feedback has exceeded the THRESHOLD for a period greater than DELAY. This fault is crucial for protecting the motor and drive system from potential damage due to exc...

Cause : BRAKE SHORT CIRCUIT comes when there is a direct electrical connection between the positive and negative terminals of the brake circuit, bypassing the brake resistance and causing excessive cu...

Cause : VDC RIPPLE comes when the dc link ripple voltage is too high. Ripple refers to the AC component superimposed on the DC voltage, which can affect the drive's performance and reliability. DCRP V...

Cause : LOW SPEED OVER I comes when the motor is drawing too much current (>100%) at zero output frequency. This typically occurs when the motor is attempting to start or operate at very low speeds...