ABB ACS380 Series User Manual

262 Parameters
50.02 FBA A comm loss func Selects how the drive reacts upon a fieldbus
communication break. The time delay is defined by
parameter 50.03 FBA A comm loss t out.
No action
No action No action taken. 0
Fault Communication break detection active. Upon a
communication break, the drive trips on a 7510 FBA A
communication fault and coasts to a stop.
1
Last speed Communication break detection active. Upon a
communication break, the drive generates a warning
(A7C1 FBA A communication) and freezes the speed to
the level the drive was operating at. 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 Communication break detection active. Upon a
communication break, the drive generates a warning
(A7C1 FBA A communication) and sets the speed to the
value defined by parameter 22.41 Speed ref safe (or
28.41 Frequency ref safe when frequency reference is
being used).
WARNING! Make sure that it is safe to continue
operation in case of a communication break.
3
Fault always The machinery control unit trips on a communication fault
even though no control is expected from the fieldbus.
4
Warning The machinery control unit generates a communication
warning even though no control is expected from the
fieldbus.
5
50.03 FBA A comm loss t out Defines the time delay before the action defined by
parameter 50.02 FBA A comm loss func is taken. Time
count starts when the communication link fails to update
the message.
0.3 s
0.3…6553.5 s Time delay. 1 = 1 s
50.04 FBA A ref1 type Selects the type and scaling of reference 1 received from
fieldbus adapter A. The scaling of the reference is defined
by parameters 46.01…46.04, depending on which
reference type is selected by this parameter.
Speed or
frequency
Speed or frequency Type and scaling is chosen automatically according to the
currently active operation mode as follows:
0
Transparent No scaling is applied. 1
General Generic reference without a specific unit. 2
Torque The scaling is defined by parameter 46.03 Torque scaling.3
Speed The scaling is defined by parameter 46.01 Speed scaling.4
No. Name/Value Description Default
FbEq 16
Operation mode
(see par. 19.01)
Reference 1 type
Speed control Speed
Torque control Speed
Frequency control Frequency

ABB ACS380 Series Specifications

General

Brand	ABB
Model	ACS380 Series
Category	DC Drives
Language	English