ABB ACS880 Firmware Manual page 569

No. Name / Range /
Selection
b4 Pos counter init
ready
b5 Position counter
re-init disabled
b6 Position data
inaccurate
b7...15 Reserved
0000h...FFFFh
90.38 Pos counter
decimals
0...9
90.41 Motor feedback
selection
Estimate
Encoder 1
Encoder 2
90.42 Motor speed filter
time
0...10000 ms
Description
0 = Position counter not initialized, or encoder feedback
was lost. Fresh counter initialization recommended.
1 = Position counter successfully initialized
1 = Position counter initialization is being prevented
by par. 90.68
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.)
Scales the values of parameters
scaled and 90.65 Pos counter init value
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
divided by 1000, so the final value applied will be 66.770.
Likewise, the value of 90.5 Load position scaled
multiplied by 1000 when read.
Number of position counter decimal places.
Selects 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
ID run requested to Autophasing
autophasing routine.
A calculated speed estimate generated from the DTC
core is used.
Actual speed measured by encoder 1. The encoder is
set up by the parameters in group
configuration.
Actual speed measured by encoder 2. The encoder is
set up by the parameters in group
configuration.
Defines a filter time for motor speed feedback used
for speed control (90.1 Motor speed for
Motor speed filter time.
Parameters 569
90.5 Load position
when accessed
is
is
99.13
to request a fresh
92 Encoder 1
93 Encoder 2
control).
Def / Type
FbEq 16b / 32b
1 = 1
3 / uint16
1 = 1 / 1 = 1
Estimate / uint16
0
1
2
3 ms / real32
1 = 1 ms / 1 = 1 ms