ABB ACS880 Firmware Manual page 483

No. Name / Range /
Selection
Speed ref safe
Fault always
Warning
58.15 Communication loss
mode
Any message
Cw / Ref1 / Ref2
58.16 Communication loss
time
0.0 ... 6000.0 s
Description
Drive generates an A7CE EFB comm loss
sets the speed to the speed defined by parameter
Speed ref safe (or 28.41 Frequency ref safe
frequency reference is being used). This only occurs if
control is expected from the EFB, or if supervision is
forced using parameter
force.
WARNING!
Make sure that it is safe to continue operation
in case of a communication break.
Drive trips on 6681 EFB communication
occurs even though no control is expected from the
EFB.
Drive generates an A7CE EFB comm loss
only occurs if control is expected from the EFB, or if
supervision is forced using parameter
supervision force.
WARNING!
Make sure that it is safe to continue operation
in case of a communication break.
Defines which message types reset the timeout counter
for detecting an EFB communication loss.
Changes to this parameter take effect after the control
unit is rebooted or the new settings validated by
parameter 58.6 Communication
See also parameters 58.14 Communication loss action
and 58.16 Communication loss
Any message addressed to the drive resets the timeout.
A write of the control word or a reference from the
fieldbus resets the timeout.
Sets a timeout for EFB communication. If a
communication break lasts longer than the timeout,
the action specified by parameter
loss action is taken.
Changes to this parameter take effect after the control
unit is rebooted or the new settings validated by
parameter 58.6 Communication
Note: There is a 30-second boot-up delay immediately
after power-up. During the delay, the communication
break monitoring is disabled (but communication itself
can be active).
See also parameter 58.15 Communication loss
EFB communication timeout.
warning and
when
58.36 EFB comm supervision
loss. This
warning. This
58.36 EFB comm
control.
time.
58.14 Communication
control.
Parameters 483
Def / Type
FbEq 16b / 32b
3
22.41
4
5
Cw / Ref1 / Ref2 /
uint16
1
2
3.0 s / uint16
mode.
1 = 1 s / 10 = 1 s