ABB ACS880 - Page 569

Def / Type
FbEq 16b / 32b
DescriptionName / Range /
Selection
No.
0 = Position counter not initialized, or encoder feedback
was lost. Fresh counter initialization recommended.
1 = Position counter successfully initialized
Pos counter init
ready
b4
1 = Position counter initialization is being prevented
by par. 90.68
Position counter
re-init disabled
b5
1 = Encoder feedback intermittent or lost. (If the drive
is running, estimated position is used whenever
encoder feedback is unavailable. If the drive is in
stopped state, position counting will continue based
on encoder data after the connection is restored.)
Position data
inaccurate
b6
Reservedb7…15
1 = 10000h…FFFFh
3 / uint16Scales the values of parameters 90.5 Load position
scaled and 90.65 Pos counter init value when accessed
from an external source (eg. fieldbus). The setting
corresponds to the number of decimal places.
For example, with the setting of 3, an integer value of
66770 written into 90.65 Pos counter init value is
divided by 1000, so the final value applied will be 66.770.
Likewise, the value of 90.5 Load position scaled is
multiplied by 1000 when read.
Pos counter
decimals
90.38
1 = 1 / 1 = 1Number of position counter decimal places.0...9
Estimate / uint16Selects the motor speed feedback value used during
motor control.
Note: With a permanent magnet motor, make sure an
autophasing routine (see page 102) is performed using
the selected encoder. If necessary, set parameter 99.13
ID run requested to Autophasing to request a fresh
autophasing routine.
Motor feedback
selection
90.41
0A calculated speed estimate generated from the DTC
core is used.
Estimate
1Actual speed measured by encoder 1. The encoder is
set up by the parameters in group 92 Encoder 1
configuration.
Encoder 1
2Actual speed measured by encoder 2. The encoder is
set up by the parameters in group 93 Encoder 2
configuration.
Encoder 2
3 ms / real32Defines a filter time for motor speed feedback used
for speed control (90.1 Motor speed for control).
Motor speed filter
time
90.42
1 = 1 ms / 1 = 1 msMotor speed filter time.0...10000 ms
Parameters 569