reduce
speed from
detection
level
Behaviour like „reaction speed zero“. Exception: The inter-
nally effective setpoint speed is abruptly set to pn87[2] de-
tection speed level and from there to zero.
only effective with reaction mode save actual torque:
internally effective setpoint speed remains constant.
The time in which the blockade reaction selected in pn87[1] is carried out can be
specified in the following parameter.
Time wherein - depending on the mode - the reaction (cur-
rent/torque linear to zero / torque maintained / DC braking) is
carried out.
The time for current/torque reduction is always constant, inde-
pendent of the starting value
Reducing the torque/current limit to zero can cause problems.
Current offset or position misorientation can cause movements that can no longer
be compensated by the control.
This parameter can be used to preset the lower limit of the reduction in % rated
motor torque or % rated motor current.
The ramp is not affected by this parameter.
Due to the limitation, the value remains constant after reaching the lower limit until
the end of the blockage reaction time.
Factor for limiting the current / torque reduction
4.4.24.3 Blockade display
4.4.24.3.1 Detailed state display
In the structure pn87 there is a parameter that dispays the actual status of the
blockade detection:
blockage detection status
blockage detection
inactive
In parameter pn87[1] neither a control reaction, nor setting
of the "warning bit" or triggering of an error is activated.
Detection is activated, but the condition setpoint above
pn87[2] detection speed level and actual value below
pn87[2] is not met.
blockage detection time
running
The condition setpoint above pn87[2] detection speed level
and actual value below pn87[2] is met and the timer for
pn87[3] detection time is running.
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