ABB ACS880 Firmware Manual page 225

No. Name / Range /
Selection
Last speed
Speed ref safe
12.4 AI supervision
selection
b0 AI1 < MIN
b1 AI1 > MAX
b2 AI2 < MIN
b3 AI2 > MAX
b4...15 Reserved
0000h...FFFFh
12.5 AI supervision force
b0 AI1 Ext 1
b1 AI1 Ext 2
b2 AI1 Local
b3 Reserved
b4 AI2 Ext 1
b5 AI2 Ext 2
b6 AI2 Local
b7...15 Reserved
0000 0000b...0111
0111b
Description
Drive generates a warning
Warning) and freezes the speed (or frequency) to the
level the drive was operating at. The speed/frequency
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 a warning
Warning) and sets the speed to the speed defined by
parameter 22.41 Speed ref safe
safe when frequency reference is being used).
WARNING!
Make sure that it is safe to continue operation
in case of a communication break.
Specifies the analog input limits to be supervised. See
parameter 12.3 AI supervision
1 = Minimum limit supervision of AI1 active.
1 = Maximum limit supervision of AI1 active.
1 = Minimum limit supervision of AI2 active.
1 = Maximum limit supervision of AI2 active.
Activates analog input supervision separately for each
control location (see section
control (page 39)).
The parameter is primarily intended for analog input
supervision when the input is connected to the
application program and not selected as a control
source by drive parameters.
1 = AI1 supervision active when EXT1 is being used.
1 = AI1 supervision active when EXT2 is being used.
1 = AI1 supervision active when local control is being
used.
1 = AI2 supervision active when EXT1 is being used.
1 = AI2 supervision active when EXT2 is being used.
1 = AI2 supervision active when local control is being
used.
(A8A0 AI Supervised
(A8A0 AI Supervised
(or 28.41 Frequency ref
function.
Local control vs. external
Parameters 225
Def / Type
FbEq 16b / 32b
3
4
- / uint16
1 = 1
- / uint16
1 = 1