ABB ACS880 Firmware Manual page 398

398 Parameters
No. Name/Value
Auto falling
92.12 Zero pulse enable
Disable
Enable
92.12 Resolver polepairs
1...32
92.13 Position estimation
enable
Disable
Enable
92.13 Position data width
0...32
92.14 Speed estimation
enable
Disable
Enable
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Description
One of the above modes is selected automatically depending
on the pulse frequency as follows:
Pulse frequency of the
channel(s)
< 2442 Hz
2442...4884 Hz
> 4884 Hz
(Visible when an absolute encoder is selected)
Enables the encoder zero pulse for the absolute encoder input
(X42) of the FEN-11 interface module.
Note: No zero pulse exists with serial interfaces, ie. when
parameter 92.11 Absolute position source
Hiperface, SSI or Tamagawa.
Zero pulse disabled.
Zero pulse enabled.
(Visible when a resolver is selected)
Defines the number of pole pairs of the resolver.
Number of resolver pole pairs.
(Visible when a TTL, TTL+ or HTL encoder is selected)
Selects whether position estimation is used with encoder 1 to
increase position data resolution or not.
Measured position used. (The resolution is 4 × pulses per
revolution for quadrature encoders, 2 × pulses per revolution
for single-track encoders.)
Estimated position used. (Uses position interpolation;
extrapolated at the time of data request.)
(Visible when an absolute encoder is selected)
Defines the number of bits used to indicate position within one
revolution. For example, a setting of 15 bits corresponds to
32768 positions per revolution.
The value is used when parameter
source is set to EnDat, Hiperface
92.11 Absolute position source
parameter is internally set to 17.
Note: With an EnDat or HIPERFACE encoder and FEN-11
FPGA version VIE12200 or later, this parameter is
automatically set upon validation of encoder settings
Encoder parameter refresh).
Number of bits used in position indication within one
revolution.
(Visible when a TTL, TTL+ or HTL encoder is selected)
Selects whether calculated or estimated speed is used.
Estimation increases the speed ripple in steady state
operation, but improves the dynamics.
Note: This parameter is not effective with FEN-xx modules
with FPGA version VIEx 2000 or later.
Last calculated speed used. (The calculation interval is 62.5
microseconds to 4 milliseconds.)
Estimated speed (estimated at the time of data request) is
used.
Used mode
A&B all
A all
A falling
is set to EnDat,
92.11 Absolute position
or SSI. When parameter
is set to Tamagawa, this
(91.10
Def/FbEq16
5
Disable
0
1
1
1 = 1
Enable
0
1
0
1 = 1
Disable
0
1