ABB ACS380 Series - Page 272

272 Parameters
Last speed Drive generates an A7CE EFB comm loss warning 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. This occurs only if control
is expected from the EFB.
WARNING! Make sure that it is safe to continue
operation in case of a communication break.
2
Speed ref safe Drive generates an A7CE EFB comm loss warning and
sets the speed to the speed defined by parameter 22.41
Speed ref safe (or 28.41 Frequency ref safe when
frequency reference is being used). This occurs only if
control is expected from the EFB.
WARNING! Make sure that it is safe to continue
operation in case of a communication break.
3
Fault always Drive trips on 6681 EFB comm loss. This happens even
thought the drive is in a control location where the EFB
start/stop or reference is not used.
4
Warning Drive generates an A7CE EFB comm loss warning. This
occurs even though no control is expected from the EFB.
WARNING! Make sure that it is safe to continue
operation in case of a communication break.
5
58.15 Communication loss
mode
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
58.06 Communication control (Refresh settings).
See also parameters 58.14 Communication loss action
and 58.16 Communication loss time
Note: If parameter 58.01 = [3] CANopen, this parameter is
hidden.
Cw / Ref1 /
Ref2
Any message Any message addressed to the drive resets the timeout. 1
Cw / Ref1 / Ref2 A write of the control word or a reference resets the
timeout.
2
58.16 Communication loss
time
Sets a timeout for EFB communication. If a
communication break lasts longer than the timeout, the
action specified by parameter 58.14 Communication loss
action is taken.
Changes to this parameter take effect after the control unit
is rebooted or the new settings validated by parameter
58.06 Communication control (Refresh settings).
See also parameter 58.15 Communication loss mode.
3.0 s
0.0…6000.0 s EFB communication timeout. 1 = 1
58.17 Transmit delay Defines a minimum response delay in addition to any fixed
delay imposed by the protocol.
Changes to this parameter take effect after the control unit
is rebooted or the new settings validated by parameter
58.06 Communication control (Refresh settings).
Note: If parameter 58.01 = [3] CANopen, this parameter is
hidden.
0 ms
0…65535 ms Minimum response delay. 1 = 1
No. Name/Value Description Default
FbEq 16