
Parameters 115
12
Configuration of standard analog inputs.
The true readings of the analog inputs can be
overridden for e.g. testing purposes. A forced value
parameter is provided for each analog input, and its
value is applied whenever the corresponding bit in
this parameter is 1.
Note:
AI filter times (parameters
and
) have no effect on forced AI
values (parameters
).
Note:
Boot and power cycle reset the force selections
(parameter
0000h
0000h…FFFFh
Forced values selector for analog inputs AI1 and AI2.
1 = 1
Selects how the drive reacts when an analog input
signal moves out of the minimum and/or maximum
limits specified for the input.
The supervision applies a margin of 0.5 V or 1.0 mA to
the limits. For example, if the maximum limit for the
input is 7.000 V, the maximum limit supervision
activates at
7.500 V.
The inputs and the limits to be observed are selected
No action
No action taken.
0
Fault
Drive trips on
1
Warning
Drive generates an
warning.
2
Last speed
Drive generates a 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.
3
Speed ref safe
Drive generates a warning (
) and
sets the speed to the speed defined by parameter
(or
when
frequency reference is being used).
WARNING!
Make sure that it is safe to continue
operation in case of a communication break.
4
No.
Name/Value
Description
Default
FbEq 16
Bit
Value
0
1 = Force AI1 to value of parameter
1
1 = Force AI2 to value of parameter
2…15
Reserved
Summary of Contents for ACS280
Page 1: ... ABB MACHINERY DRIVES ACS280 coldplate drives Firmware manual ...
Page 4: ......
Page 10: ...10 ...
Page 16: ...16 Control panel ...
Page 20: ...20 Start up ID run and use ...
Page 24: ...24 Default control connection ...
Page 88: ...88 Program features ...
Page 298: ...298 Parameters ...