ABB ACS880 Series, Firmware Manual

Page: 573 / 764

Def / Type
FbEq 16b / 32b Description Name / Range /
Selection No.
1 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.
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.
Continue from
previous value
1 / int32 Parameter 90.61 and 90.62 define a gear function
between the motor and load speeds.
90.61
90.62
=
Motor speed
Load speed
See also section Load and motor feedback (page 93) .
Gear numerator 90.61
- / - Gear numerator (motor-side). -2147483648...2147483647
1 / int32 See parameter 90.61 Gear numerator . Gear denominator 90.62
- / - Gear denominator (load-side). -2147483648...2147483647
1 / int32 Parameters 90.63 and 90.64 define the feed constant
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 int . Note that the load
position is only updated after new position input data
is received.
Feed constant
numerator 90.63
- / - Feed constant numerator. -2147483648...2147483647
1 / int32 See parameter 90.63 Feed constant numerator . Feed constant
denominator 90.64
- / - Feed constant denominator. -2147483648...2147483647
0.000 / real32 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 .
Pos counter init
value 90.65
- / - Initial value for position counter. -2147483.648 ...
2147483.647
Pos counter init value
/ uint32 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 source 90.66
0 0. Zero
1 Parameter 90.65 Pos counter init value . Pos counter init
value
See Terms and abbreviations (page 169) . Other [value]
Parameters 573