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ABB ACS880-11 - Page 396

ABB ACS880-11
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396 Parameters
90.60 Pos counter error
and boot action
Selects how the position counter reacts to loss of load
feedback.
Request re-
initialization
Request re-
initialization
Bit 4 of 90.35 Pos counter status is cleared. Reinitialization of
position counter is recommended.
0
Continue from
previous value
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 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.
1
90.61 Gear numerator Parameters 90.61 and 90.62 define a gear function between
the motor and load speeds.
See also section Load and motor feedback (page 50).
1
-2147483648 …
2147483647
Gear numerator (motor-side). -
90.62 Gear denominator See parameter 90.61 Gear numerator.1
-2147483648 …
2147483647
Gear denominator (load-side). -
90.63 Feed constant
numerator
Parameters 90.63 and 90.64 define the feed constant for the
position calculation:
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 90.07
Load position scaled int. Note that the load position is only
updated after new position input data is received.
1
-2147483648 …
2147483647
Feed constant numerator. -
90.64 Feed constant
denominator
See parameter 90.63 Feed constant numerator.1
-2147483648 …
2147483647
Feed constant denominator. -
90.65 Pos counter init
value
Defines an initial position (or distance) for the position counter
(as a decimal number) when parameter 90.66 Pos counter init
value source is set to Pos counter init value.
The number of decimal places is defined by parameter 90.38
Pos counter decimals.
0.000
-2147483.648 …
2147483.647
Initial value for position counter. -
90.66 Pos counter init
value source
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).
Pos counter
init value
Zero 0. 0
No. Name/Value Description Def/FbEq16
90.61 Gear numerator
90.62 Gear denominator
Motor speed
Load speed
=
90.63 Feed constant numerator
90.64 Feed constant denominator

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