ABB ACS880 Firmware Manual page 464

464 Parameters
No. Name / Range /
Selection
Speed ref safe
Fault always
Warning
50.3 FBA A comm loss t
out
0.1 s
50.4 FBA A ref1 type
Auto
Transparent
General
Description
Drive generates an A7C1 FBA A 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 A
interface, or if supervision is forced using parameter
50.26 FBA A comm supervision
WARNING!
Make sure that it is safe to continue operation
in case of a communication break.
Drive trips on 7510 FBA A
even though no control is expected from the FBA A
interface.
Drive generates an A7C1 FBA A communication
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
WARNING!
Make sure that it is safe to continue operation
in case of a communication break.
Defines the time delay before the action defined by
parameter 50.2 FBA A comm loss func
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).
Time delay.
Selects 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.
Type 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).
No scaling is applied (the 16-bit scaling is 1 = 1 unit).
Generic reference with a 16-bit scaling of 100 = 1 (ie.
integer and two decimals).
warning
(when frequency
force.
communication. This occurs
warning.
force.
is taken. Time
Def / Type
FbEq 16b / 32b
3
4
5
0.3 s / uint16
10 = 1 s / 10 = 1 s
Auto / uint16
0
1
2