STOBER
12 | Diagnostics
05/2019 | ID 442790.01
157
12.2.23
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. 169: Event 56 – Causes and actions
