ABB ACS880 Firmware Manual page 468

468 Parameters
No. Name / Range /
Selection
Option slot 1
Option slot 2
Option slot 3
50.32 FBA B comm loss
func
No action
Fault
Last speed
Speed ref safe
Fault always
Description
Communication between drive and fieldbus adapter B
enabled. The adapter is in slot 1.
Communication between drive and fieldbus adapter B
enabled. The adapter is in slot 2.
Communication between drive and fieldbus adapter B
enabled. The adapter is in slot 3.
Selects how the drive reacts upon a fieldbus
communication break. A time delay for the action can
be defined by parameter
timeout.
See also parameter 50.56 FBA B comm supervision
force.
No action taken.
Drive trips on 7520 FBA B
occurs if control is expected from the FBA B interface
(FBA B selected as source of start/stop/reference in
the currently active control location), or if supervision
is forced using parameter
supervision force.
Drive generates an A7C2 FBA B communication
and freezes the speed to the level the drive was
operating at. This only occurs if control is expected
from the FBA B interface, or if supervision is forced
using parameter 50.56 FBA B comm supervision
The speed is determined on the basis of actual speed
using 850 ms low-pass filtering.
WARNING!
Make sure that it is safe to continue operation
in case of a communication break.
Drive generates an A7C2 FBA B communication
and sets the speed to the value defined by parameter
22.41 Speed ref safe (when speed reference is being
used) or 28.41 Frequency ref safe
reference is being used).
This only occurs if control is expected from the FBA B
interface, or if supervision is forced using parameter
50.56 FBA B comm supervision
WARNING!
Make sure that it is safe to continue operation
in case of a communication break.
Drive trips on 7520 FBA B
even though no control is expected from the FBA B
interface.
50.33 FBA B comm loss
communication. This only
50.56 FBA B comm
warning
warning
(when frequency
force.
communication. This occurs
Def / Type
FbEq 16b / 32b
1
2
3
No action / uint16
0
1
2
force.
3
4