Program features 43
The function is based on a PI controller. The proportional gain and integration time
can be defined by parameters. Setting these to zero disables rush control.
Settings
Parameters 26.81 Rush control gain and 26.82 Rush control integration time (page
185).
Encoder support
The following optional interface modules are available:
• TTL encoder interface FEN-01: two TTL inputs
• HTL encoder interface FEN-31: HTL encoder input
The interface module is to be installed onto slot 1 on the drive control unit.
Load and motor feedback
Three different sources can be used as speed and position feedback: encoder 1,
motor position estimate. Any of these can be used for load position calculation or
motor control. The load position calculation makes it possible, for example, to
determine the position of a conveyor belt or the height of the load on a crane. The
feedback sources are selected by parameters 90.41 Motor feedback selection and
90.51 Load feedback selection.
For detailed parameter connections of the motor and load feedback functions, see
the block diagrams on pages 423 and 424. For more information on load position
calculation, see section Position counter (page 44).
Motor speed
Time
Overspeed trip level
Overspeed trip level
31.30 Overspeed trip margin
0
31.30 Overspeed trip margin
30.12
30.11
Rush control active
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