64 Standard programposi features
Encoder echo and emulation
Both encoder echo and emulation are supported by the above-mentioned FEN-xx
interfaces.
Encoder echo is available with TTL, TTL+ and HTL encoders. The signal received
from the encoder is relayed to the TTL output unchanged. This enables the
connection of one encoder to several drives.
Encoder emulation also relays the encoder signal to the output, but the signal is
either scaled, or position data converted to pulses. Emulation can be used when
absolute encoder or resolver position needs to be converted to TTL pulses, or when
the signal must be converted to a different pulse number than the original.
Quick configuration of HTL encoder feedback
1. Specify the type of encoder interface module (parameter
=
) and slot in which the module is installed (
).
2. Specify the type of encoder (
). The parameter
listing is re-read from the drive after the value is changed.
3. Specify the interface module to which the encoder is connected to (
).
4. Set the number of pulses according to encoder nameplate
5. If the encoder rotates at a different speed to the motor (that is, not mounted
directly on the motor shaft), enter the gear ratio in
and
6. Set parameter
to
parameter settings. The parameter automatically reverts to
.
is showing the correct interface module type
). Also check the status of the module. Both LEDs should be glowing
green.
8. Start the motor with a reference. For example, 400 rpm.
9. Compare the estimated speed (
) with the measured
speed (
01.04 Encoder 1 speed filtered
). If the values are the same, set the
encoder as the feedback source (
=
10. Specify the action taken in case the feedback signal is lost (
).
Summary of Contents for ACS880 ESP
Page 1: ...ABB industrial drives Firmware manual ACS880 PCP ESP control program ...
Page 4: ......
Page 28: ...28 PCP ESP control start up ...
Page 30: ...30 Using the control panel ...
Page 94: ...94 Standard programposi features ...
Page 100: ...100 Default control connections ...
Page 360: ...360 Parameters ...
Page 436: ...436 Fault tracing ...
Page 486: ...486 Control chain diagrams ...
Page 492: ...492 Appendix ESP with step up transformer and sine filter ...
Page 494: ...Contact us www abb com drives www abb com drivespartners 3AXD50000016186 Rev B EN 2015 10 27 ...