ABB ACS880 - Page 420

Def / Type
FbEq 16b / 32b
DescriptionName / Range /
Selection
No.
1Communication between drive and fieldbus adapter B
enabled. The adapter is in slot 1.
Option slot 1
2Communication between drive and fieldbus adapter B
enabled. The adapter is in slot 2.
Option slot 2
3Communication between drive and fieldbus adapter B
enabled. The adapter is in slot 3.
Option slot 3
No action / uint16Selects how the drive reacts upon a fieldbus
communication break. A time delay for the action can be
defined by parameter 50.33 FBA B comm loss timeout.
See also parameter 50.56 FBA B comm supervision force.
FBA B comm loss
func
50.32
0No action taken.No action
1
Drive trips on 7520 FBA B communication. This only 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 50.56 FBA B comm supervision force.
Fault
2
Drive generates an A7C2 FBA B communication warning
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 force.
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.
Last speed
3
Drive generates an A7C2 FBA B communication warning
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 (when frequency 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 force.
WARNING!
Make sure that it is safe to continue operation in
case of a communication break.
Speed ref safe
4
Drive trips on 7520 FBA B communication. This occurs
even though no control is expected from the FBA B
interface.
Fault always
420 Parameters