ABB ACS880 Firmware Manual page 340

340 Parameters
No. Name/Value
Last speed
Speed ref safe
Fault always
Warning
50.03 FBA A comm loss t
out
0.3 ... 6553.5 s
50.04 FBA A ref1 type
Auto
Transparent
General
Torque
Speed
Frequency
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Description
Drive generates an A7C1 FBA A communication
freezes the speed to the level the drive was operating at. This
only occurs if control is expected from the FBA A interface, or
if supervision is forced using parameter
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.
Drive generates an A7C1 FBA A communication
sets the speed to the value defined by parameter
ref safe (when speed reference is being used) or
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
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
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
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
50.02 FBA A comm loss func
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).
The scaling is defined by parameter
The scaling is defined by parameter
The scaling is defined by parameter
warning and
50.26 FBA A comm
warning and
22.41 Speed
28.41
force.
communication. This occurs even
warning.
force.
is taken. Time count starts when
46.03 Torque scaling.
46.01 Speed scaling.
46.02 Frequency
Def/FbEq16
2
3
50.26
4
5
50.26
0.3 s
1 = 1 s
Auto
0
1
2
3
4
scaling. 5