Negative maximum speed exceeded.
This error message is triggered by the diagnosis module if the current motor speed ID487 "Speed Visu. [Ax]" is less than the negative limit value entered in the Parameter ID47 "neg.max.speed[Ax]".
The rotary encoder used for monitoring the negative maximum speed is always the one used for the motor commutation. If the negative limit speed value is to be given for the load, a gear unit may possibly have to be taken into consideration, after acknowledging the error, the rotary encoder is reinitialised and if necessary the home position run is restarted.
The error is fatal and leads to immediate shutoff of the drive controller. In this case the drive coasts to a standstill. Renewed release of the drive by the controller is prevented until the cause of the error has been corrected and the error has been acknowledged.
Source and Remedy
Incorrect parameterisation of the negative limit speed value or gearing factor between the motor and load incorrectly taken into account when parameterizing the positive limit speed value. Check the parameter ID47 "neg.max.speed.[Ax]".
A malfunction in the motor commutation of synchronous motors can lead to incorrect commutation. The drive then possibly revs up to maximum speed after receiving the controller releases and shuts down with overspeed.
Carry out new stop angle run and ensure that the drive can move freely throughout. Check the actual position recorded (rotary encoder ).
Setpoint speed specified by the controls is too high. Check setpoint values!
Recording of actual speed value faulty or wrongly parameterised.
Check the parameter ID88 "pick-up PPR count [ax]", ID112 "Pick-up active [ax]". Replace rotary encoder.