Automooring Hysteresis And Dead Band - ABB ACS880 Firmware Manual

64 Winch program features
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Automooring hysteresis and dead band

Hysteresis limits define the limits for the rope tension. If the tension exceeds the
limits, the Automooring program starts a corrective action to get the tension towards
the setpoint. The hysteresis values are defined in parameters
level and 76.31 Hysteresis low
currently active Automooring actual setpoint
The deadband limits define the limits for an acceptable tension value. When the
tension is within the deadband, the Automooring is stopped after In zone delay. The
deadband values are defined in parameters
Deadband low level. They are defined as percentage values of the currently active
Automooring actual setpoint
The final calculated absolute value of these parameters are in the corresponding
parameter group 09 Winch actual signals
high used to 09.29 AM deadband low
Absolute and relative deadband hysteresis levels
In absolute levels, the parameter value of a deadband and hysteresis levels are fixed.
Enable absolute levels with parameter
Torque (%)
Absolute levels
In relative levels, the parameter value of a deadband and hysteresis levels are
multiplied with the actual Automooring setpoint reference value.
Settings and diagnostics
Signal: 09.22 Automooring actual setpoint
Parameters: 76.04 Automooring config word
76.31 Hysteresis low
(page 489).
level. They are defined as percentage values of the
(09.22 Automooring actual
used.
76.04 Automooring config
Time (t)
level, 76.32 Deadband high level
(09.22 Automooring actual
76.32 Deadband high level
setpoint).
and the parameters
Torque (%)
Relative levels
(page 224).
(page 485), 76.30 Hysteresis high
and 76.33 Deadband low level
76.30 Hysteresis high
setpoint).
and 76.33
09.26 AM hysteresis
word, bit 2.
Time (t)
level,