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84 Program features
￭
Rush control
In torque control, the motor could potentially rush if the load were suddenly lost.
The control program has a rush control function that decreases the torque
reference whenever the motor speed (90.1) exceeds parameter
Motor speed
Overspeed trip level
30.12
0
Rush control active
30.11
Overspeed trip level
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 and diagnostics
Parameter groups:
Feedback selection (page
Parameters:
26.81 Rush control gain (page 305)
time (page
305).
￭
Encoder support
The program supports two single-turn or multiturn encoders (or resolvers). The
following optional interface modules are available:
•
TTL encoder interface FEN-01: two TTL inputs, TTL output (for encoder
emulation and echo) and two digital inputs
•
Absolute encoder interface FEN-11: absolute encoder input, TTL input, TTL
output (for encoder emulation and echo) and two digital inputs
30 Limits (page
306),
484).
31.30
31.30
31 Fault functions (page 316)
and
26.82 Rush control integration
30.11
or 30.12.
Time
and
90
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