ABB ACS880 N5700 Series - Page 474

Def / Type
FbEq 16b / 32b
DescriptionName / Range /
Selection
No.
- / uint32Together with 87.16 Master axis modulo denominator,
defines the rollover axis configuration.
When this parameter is set to 0, the master axis is linear
and limited by the range of 32 bits of increments of the
holding variable.
If this parameter is not set to 0, the ratio of the
numerator and denominator defines the range of the
rollover axis measured in revolutions of the master
reference source.
Note that master input increments are converted to
revolutions based on 87.10 Master increments per
revolution.
Master axis modulo
numerator
87.15
1 = 1 / 1 = 1Master axis modulo numerator.0...2000000000
- / uint32See 87.15 Master axis modulo numerator.Master axis modulo
denominator
87.16
1 = 1 / 1 = 1Master axis modulo denominator.1...2000000000
Disable / uint32Forces (or selects a signal that forces) the master axis
to linear even if parameter 87.15 is non-zero, ie. if the
master axis is defined as rollover. This parameter can
be used to convert the input from a rollover source to
a linear reference for the controlled axis.
A typical application is an algorithm (eg. flying shear)
that needs a linear master axis but the master reference
is received as circular via the D2D channel.
Force linear master87.17
0The modulo numerator determines if the master axis
is linear or rollover.
Disable
1Master axis is forced to linear.Enable
See Terms and abbreviations (page 130).Other [value]
None / uint16Forces (or selects a signal that forces) the master axis
to linear even if parameter 87.15 is non-zero, ie. if the
master axis is defined as rollover. This parameter can
be used to convert the input from a rollover source to
a linear reference for the controlled axis.
A typical application is an algorithm (eg. flying shear)
that needs a linear master axis but the master reference
is received as circular via the D2D channel.
External encoder
source
87.20
0No external encoder in use.None
1External encoder source is encoder 1 position.Encoder 1
2External encoder source is encoder 2 position.Encoder 2
Positive / uint16Defines the direction of the external encoder to be
tracked internally. The parameter changes the delta
increment coming from the master feedback sensor.
External encoder
direction
87.21
0Tracking direction not inverted.Positive
1Tracking direction inverted.Negative
- / uint32Defines the number of increments that span a modulo
range for the external encoder position. If this setting
is greater than zero, the master axis position is always
restored within the defined modulo range.
Absolute external
encoder modulo
numerator
87.22
474 Parameters