ABB ACS880-104

378 Parameters
50.32 FBA B comm loss
func
Selects 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.
No action
No action No action taken. 0
Fault The 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.
1
Last speed 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.
2
Speed ref safe 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.
3
Fault always Drive trips on 7520 FBA B communication. This occurs even
though no control is expected from the FBA B interface.
4
Warning Drive generates an A7C2 FBA B communication warning.
This occurs even though no control is expected from the
fieldbus. 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.
5
50.33 FBA B comm loss
timeout
Defines the time delay before the action defined by parameter
50.32 FBA B comm loss func
is taken. Time count starts when
the communication link fails to update the message.
As a rule of thumb, this parameter should be set to at least 3
times the transmit interval of the master.
0.3 s
0.3 … 6553.5 s Time delay. 1 = 1 s
50.34 FBA B ref1 type Selects the type and scaling of reference 1 received from
fieldbus adapter B.
See parameter 50.04 FBA A ref1 type.
Auto
50.35 FBA B ref2 type Selects the type and scaling of reference 2 received from
fieldbus adapter B.
See parameter 50.04 FBA A ref1 type.
Auto
50.37 FBA B actual 1 type Selects the type/source and scaling of actual value 1
transmitted to the fieldbus network through fieldbus adapter
B.
See parameter 50.07 FBA A actual 1 type.
Auto
No. Name/Value Description Def/FbEq16