ABB ACS880 Firmware Manual page 472

472 Parameters
No. Name/Value
92.23 Maximum pulse
waiting time
1...200 ms
92.24 Pulse edge filtering
No filtering
1 µs
2 µs
92.25 Pulse
overfrequency
function
Warning
Fault
92.30 Serial link mode
Initial position
Continuous
Continuous speed
and position
Description
(Visible when parameter
HTL)
Determines a pulse waiting time used in speed calculation
for the encoder interface. If no pulse edges are detected
within this time, the measured speed is zeroed by the
interface.
Increasing the setting can improve measuring performance
especially at low, near zero speeds.
Notes:
• The parameter is only supported by FEN-xx modules with
FPGA version VIEx 2000 or later. On older modules, the
pulse waiting time is fixed to 4 ms.
• The parameter only affects speed measurement. Position
is updated whenever a new pulse edge is detected. When
the measured speed from the interface is zero, the drive
updates its speed data based on position changes.
Maximum pulse waiting time.
(Visible when parameter
Enables pulse edge filtering. Pulse edge filtering can
improve the reliability of measurements especially from
encoders with a single-ended connection.
Notes:
• Pulse edge filtering is only supported by FEN-31 modules
with FPGA version VIE3 2200 or later.
• Pulse edge filtering decreases the maximum pulse
frequency. With 2 µs filtering time, the maximum pulse
frequency is 200 kHz.
Filtering disabled.
Filtering time: 1 microsecond.
Filtering time: 2 microseconds.
(Visible when parameter
Selects how the drive reacts when the encoder interface
detects a pulse overfrequency condition.
Note: This parameter is effective only with FEN-xx module
FPGA version VIEx 2200 or later.
The drive generates a warning,
module will continue to update speed and position data.
The drive trips on fault A7E1
(Visible when an absolute encoder is selected)
Selects the serial link mode with an EnDat or SSI encoder.
Single position transfer mode (initial position).
Continuous position data transfer mode.
Continuous speed and position data transfer mode. This
setting is intended for EnDat 2.2 encoders without sin/cos
signals.
Note: This setting requires an FEN-11 interface revision H
or later.
92.01 Encoder 1 type =
92.01 Encoder 1 type = HTL)
92.01 Encoder 1 type = HTL)
7381 Encoder. The FEN-xx
Encoder.
Def/FbEq16
TTL or 4 ms
1 = 1 ms
No filtering
0
1
2
Fault
0
1
Initial
position
0
1
2