ABB ACS355 User Manual page 265

All parameters
No. Name/Value
DI3U,4D(NC)
AI1+AI2
AI1*AI2
AI1-AI2
AI1/AI2
INTERNAL
DI4U,5D(NC)
FREQ INPUT
SEQ PROG
OUT
4011 INTERNAL
SETPNT
x...x
4012 SETPOINT
MIN
-500.0...500.0% Value in percent.
4013 SETPOINT
MAX
-500.0...500.0% Value in percent
Description
Digital input DI3: Reference increase. Digital input DI4:
Reference decrease. The program stores the active
reference (not reset by a stop command). The reference is
not saved if the control source is changed from EXT1 to
EXT2, from EXT2 to EXT1 or from LOC to REM.
Reference is calculated with the following equation:
REF = AI1(%) + AI2(%) - 50%
Reference is calculated with the following equation:
REF = AI1(%) · (AI2(%) / 50%)
Reference is calculated with the following equation:
REF = AI1(%) + 50% - AI2(%)
Reference is calculated with the following equation:
REF = AI1(%) · (50% / AI2 (%))
A constant value defined by parameter
SETPNT.
See selection DI3U,4D(NC).
Frequency input
Sequence programming output. See parameter group
SEQUENCE PROG.
Selects a constant value as process PID controller
reference, when parameter
set to INTERNAL.
Unit and range depend on the unit and scale defined by
parameters 4006 UNITS
Defines the minimum value for the selected PID reference
signal source. See parameter
Example: Analog input AI1 is selected as the PID reference
source (value of parameter
minimum and maximum correspond to the
AI1 and 1302 MAXIMUM AI1
Ref
MAX > MIN
4013
(MAX)
4012
(MIN)
1301 1302
Defines the maximum value for the selected PID reference
signal source. See parameters
4012 SETPOINT MIN.
Actual signals and parameters 265
4011 INTERNAL
4010 SET POINT SEL
and 4007 UNIT SCALE.
4010 SET POINT
4010 is AI1). The reference
1301 MINIMUM
settings as follows:
Ref
MIN > MAX
4012
(MIN)
4013
(MAX)
1301
AI1 (%)
4010 SET POINT SEL
Def/FbEq
12
14
15
16
17
19
31
32
84 33
40
value is
0.0%
SEL.
1 = 0.1%
1302 AI1 (%)
100.0%
and
1 = 0.1%