ABB ACS880 Firmware Manual page 573

No. Name / Range /
Selection
Continue from
previous value
90.61 Gear numerator
-2147483648...2147483647
90.62 Gear denominator
-2147483648...2147483647
90.63 Feed constant
numerator
-2147483648...2147483647
90.64 Feed constant
denominator
-2147483648...2147483647
90.65 Pos counter init
value
-2147483.648 ...
2147483.647
90.66 Pos counter init
value source
Zero
Pos counter init
value
Other [value]
Description
Position counting resumes from the previous value
over a loss of load feedback or control unit reboot. Bit
4 of 90.35 Pos counter status
is set to indicate that an error has occurred.
Note: If load feedback is lost when the drive is in
stopped state or not powered, the counter is not
updated even if the load moves.
Parameter 90.61 and 90.62
between the motor and load speeds.
90.61 Motor speed
=
90.62 Load speed
See also section Load and motor feedback (page
Gear numerator (motor-side).
See parameter 90.61 Gear
Gear denominator (load-side).
Parameters 90.63 and
for the position calculation:
90.63
90.64
The feed constant converts rotational motion into
translatory motion. The feed constant is the distance
the load moves during one turn of the motor shaft.
The translatory load position is shown by parameter
90.7 Load position scaled
position is only updated after new position input data
is received.
Feed constant numerator.
See parameter 90.63 Feed constant
Feed constant denominator.
Defines an initial position (or distance) for the position
counter (as a decimal number) when parameter
Pos counter init value source
value.
The number of decimal places is defined by parameter
90.38 Pos counter decimals.
Initial value for position counter.
Selects the source of the initial position value. When
the source selected by
source activates, the value selected in this parameter
is assumed to be the position of the load (in decimal
format).
0.
Parameter 90.65 Pos counter init
See Terms and abbreviations (page
is not cleared, but bit 6
define a gear function
numerator.
90.64 define the feed constant
int. Note that the load
numerator.
is set to Pos counter init
90.67 Pos counter init cmd
value.
169).
Parameters 573
Def / Type
FbEq 16b / 32b
1
1 / int32
93).
- / -
1 / int32
- / -
1 / int32
- / -
1 / int32
- / -
0.000 / real32
90.66
- / -
Pos counter init value
/ uint32
0
1