ABB ACS880-11 - Page 160

160 Parameters
Last speed Drive generates a warning (A8A0 AI supervision) 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.
3
Speed ref safe Drive generates a warning (A8A0 AI supervision) 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).
WARNING! Make sure that it is safe to continue
operation in case of a communication break.
4
12.04 AI supervision
selection
Specifies the analog input limits to be supervised. See
parameter 12.03 AI supervision function.
0000b
0000b…1111b Activation of analog input supervision. 1 = 1
12.05 AI supervision force Activates analog input supervision separately for each control
location (see section Local control vs. external control on
page 20).
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.
0000 0000b
0000 0000b …
0111 0111b
Analog input supervision selection. 1 = 1
12.11 AI1 actual value Displays the value of analog input AI1 in mA or V (depending
on whether the input is set to current or voltage by a hardware
setting).
This parameter is read-only.
-
-22.000 … 22.000
mA or V
Value of analog input AI1. 1000 = 1 mA
or V
No. Name/Value Description Def/FbEq16
Bit Name Description
0 AI1 < MIN 1 = Minimum limit supervision of AI1 active.
1 AI1 > MAX 1 = Maximum limit supervision of AI1 active.
2 AI2 < MIN 1 = Minimum limit supervision of AI2 active.
3 AI2 > MAX 1 = Maximum limit supervision of AI2 active.
4…15 Reserved
Bit Name Description
0 AI1 Ext1 1 = AI1 supervision active when EXT1 is being used.
1 AI1 Ext2 1 = AI1 supervision active when EXT2 is being used.
2 AI1 Local 1 = AI1 supervision active when local control is being used.
3 Reserved
4 AI2 Ext1 1 = AI2 supervision active when EXT1 is being used.
5 AI2 Ext2 1 = AI2 supervision active when EXT2 is being used.
6 AI2 Local 1 = AI2 supervision active when local control is being used.
7…15 Reserved