ABB ACS880 Series Firmware Manual page 374

374 Parameters
No. Name/Value
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
Description
Position counting resumes from the previous value over a
loss of load feedback or control unit reboot. Bit 4 of
counter status is not cleared, but bit 6 is set to indicate that an
error has occurred.
WARNING! 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.
Parameters 90.61 and 90.62
the motor and load speeds.
90.61 Gear numerator
90.62 Gear denominator
Gear numerator (motor-side).
See parameter 90.61 Gear
Gear denominator (load-side).
Parameters 90.63 and 90.64
position calculation:
90.63 Feed constant numerator
90.64 Feed constant denominator
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
Load position scaled.
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
init value source is set to
The number of decimal places is defined by parameter
Pos counter decimals.
Initial value for position counter.
Selects the source of the initial position value. When the
source selected by 90.67 Pos counter init cmd 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
Source selection (see Terms and abbreviations
define a gear function between
Motor speed
=
Load speed
numerator.
define the feed constant for the
numerator.
90.66 Pos counter
Pos counter init value.
value.
on page 112). -
Def/FbEq16
1
90.35 Pos
1
-
1
-
1
90.05
-
1
-
0.000
90.38
-
Pos counter
init value
0
1