ABB ACS880 Firmware Manual page 270

270 Parameters
No. Name/Value
60.57 DDCS controller
link control
1...15
60.58 DDCS controller
comm loss time
0...60000 ms
60.59 DDCS controller
comm loss function
No action
Fault
Last speed
Speed ref safe
60.60 DDCS controller
ref1 type
Auto
Transparent
General
Torque
Speed
Frequency
Position
Description
Defines the light intensity of the transmission LED of RDCO
module channel CH0. (This parameter is effective only when
parameter 60.51 DDCS controller comm port
CH0. FDCO modules have a hardware transmitter current
selector.)
In general, use higher values with longer fiber optic cables.
The maximum setting is applicable to the maximum length of
the fiber optic link. See Specifications of the master/follower
link (page 34).
Light intensity.
Sets a timeout for communication with the external controller.
If a communication break lasts longer than the timeout, the
action specified by parameter
loss function is taken.
Timeout for communication with external controller.
Selects how the drive reacts to a communication break
between the drive and the external controller.
No action taken.
Drive trips on 7581 DDCS controller comm
Drive generates an A7CA DDCS controller 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.
WARNING! Make sure that it is safe to continue
operation in case of a communication break.
Drive generates an A7CA DDCS controller comm loss
warning and sets the speed to the speed defined by
parameter 22.41 Speed ref safe
when frequency reference is being used).
WARNING! Make sure that it is safe to continue
operation in case of a communication break.
Selects the type and scaling of reference 1 received from the
external controller. The scaling of the reference is defined by
parameters 46.01...46.04, depending on which reference
type is selected by this parameter. The resulting value is
shown by 03.11 DDCS controller ref
Type and scaling is chosen automatically according to the
currently active operation mode as follows:
Operation mode
(see par. 19.01)
Speed control
Torque control
Frequency control
No scaling is applied.
Generic reference without a specific unit.
The scaling is defined by parameter
The scaling is defined by parameter
The scaling is defined by parameter
Reserved.
is set to
60.59 DDCS controller comm
loss.
(or 28.41 Frequency ref safe
1.
Reference 1 type
Speed
Speed
Frequency
46.03 Torque scaling.
46.01 Speed scaling.
46.02 Frequency scaling. 5
Def/FbEq16
10
RDCO
2000 ms
Fault
0
1
2
3
Auto
0
1
2
3
4
6