■
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 (
) exceeds parameter
or
Motor speed
Overspeed trip level
Rush control active
Overspeed trip level
30.12
30.11
0
31.30
31.30
Time
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:
,
and
Parameters:
26.81 Rush control gain (page 305)
and
26.82 Rush control integration
■
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
84 Program features
Summary of Contents for ACS880 N5700 Series
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