13 | Diagnostics STOBER
202
02/2019 | ID 442728.05
13.3.22 Event 56: Overspeed
The drive controller is interrupted if:
§ U30 = 0: Inactive
Response:
§ The power unit is disabled and axis movement is no longer controlled by the drive controller
§ The brakes are no longer controlled by the drive controller and engage in the event of an
inactive release override (F06)
The drive controller is interrupted with emergency braking if:
§ U30 = 1: Active and
§ A29 = 1: Active for STOBER device controller
or
§ U30 = 1: Active and
§ A540 = 2: slow down on quick stop ramp for CiA 402 device controller
Response:
§ The axis is stopped by emergency braking; the brakes are no longer controlled by the drive
controller and engage in the event of an inactive release override (F06)
§ At the end of emergency braking, the power unit is disabled and axis movement is no longer
controlled by the drive controller
Cause Check and action
Maximum permitted velocity
too small
Check the maximum permitted velocity and increase it if necessary (I10)
Overshooting control system
Check the actual velocity using the scope image (scope Sensing time:
250 µs, actual motor velocity: E15, E91; actual position velocity I88)
and, if necessary, reduce the intensity of the control system (I20, C31)
Wrong commutation offset Check the commutation offset using the test phases action (B40)
Faulty encoder Check the velocity display of the encoder at a standstill (motor: E15,
E91; position I88) and replace the encoder if necessary
Tab. 205: Event 56 – Causes and actions
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