ABB ACS880 - Page 464

Def / Type
FbEq 16b / 32b
DescriptionName / Range /
Selection
No.
3Drive generates an A7C1 FBA A 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 A
interface, or if supervision is forced using parameter
50.26 FBA A comm supervision force.
WARNING!
Make sure that it is safe to continue operation
in case of a communication break.
Speed ref safe
4Drive trips on 7510 FBA A communication. This occurs
even though no control is expected from the FBA A
interface.
Fault always
5Drive generates an A7C1 FBA A communication warning.
This only occurs if control is expected from the FBA A
interface, or if supervision is forced using parameter
50.26 FBA A comm supervision force.
WARNING!
Make sure that it is safe to continue operation
in case of a communication break.
Warning
0.3 s / uint16Defines the time delay before the action defined by
parameter 50.2 FBA A 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.
Note: There is a 60-second boot-up delay immediately
after power-up. During the delay, the communication
break monitoring is disabled (but communication itself
can be active).
FBA A comm loss t
out
50.3
10 = 1 s / 10 = 1 sTime delay.0.1 s
Auto / uint16Selects the type and scaling of reference 1 received
from fieldbus adapter A.
Note: Fieldbus-specific communication profiles may
use different scalings. For more information, see the
manual of the fieldbus adapter.
FBA A ref1 type50.4
0Type and scaling are chosen automatically according
to which reference chain (see settings Torque, Speed,
Frequency) the incoming reference is connected to. If
the reference is not connected to any chain, no scaling
is applied (as with setting Transparent).
Auto
1No scaling is applied (the 16-bit scaling is 1 = 1 unit).Transparent
2Generic reference with a 16-bit scaling of 100 = 1 (ie.
integer and two decimals).
General
464 Parameters