ABB ACS350 Series, Руководство пользователя

Страница: 217 / 314

Actual signals and parameters
217
SEQ PROG OUT Sequence programming output. See parameter group 84 SEQUENCE
PROG .
33
4011 INTERNAL SETPNT Selects a constant value as process PID controller reference, when
parameter
4010 SET POINT SEL value is set to INTERNAL.
40
x…x Unit and range depend on the unit and scale defined by parameters 4006
UNITS and 4007 UNIT SCALE.
4012 SETPOINT MIN Defines the minimum value for the selected PID reference signal source. See
parameter
4010 SET POINT SEL
0
-500.0…500.0% Value in percent.
Example: Analog input AI1 is selected as the PID reference source (value of
parameter 4010 is AI1). The reference minimum and maximum correspond
the 1301 MINIMUM AI1 and 1302 MAXIMUM AI1 settings as follows:
1 = 0.1%
4013 SETPOINT MAX Defines the maximum value for the selected PID reference signal source.
See parameters
4010 SET POINT SEL and 4012 SETPOINT MIN.
100
-500.0…500.0% Value in percent 1 = 0.1%
4014 FBK SEL Selects the process actual value (feedback signal) for the process PID
controller: The sources for the variables ACT1 and ACT2 are further defined
by parameters
4016 ACT1 INPUT and 4017 ACT2 INPUT.
ACT1
ACT1 ACT1 1
ACT1-ACT2 Subtraction of ACT1 and ACT 2 2
ACT1+ACT2 Addition of ACT1 and ACT2 3
ACT1*ACT2 Multiplication of ACT1 and ACT2 4
ACT1/ACT2 Division of ACT1 and ACT2 5
MIN(ACT1,2) Selects the smaller of ACT1 and ACT2 6
MAX(ACT1,2) Selects the higher of ACT1 and ACT2 7
sqrt(ACT1-2) Square root of the subtraction of ACT1 and ACT2 8
sqA1+sqA2 Addition of the square root of ACT1 and the square root of ACT2 9
sqrt(ACT1) Square root of ACT1 10
COMM FBK 1 Signal 0158 PID COMM VALUE 1 value 11
COMM FBK 2 Signal 0159 PID COMM VALUE 2 value 12
4015 FBK MULTIPLIER Defines an extra multiplier for the value defined by parameter 4014 FBK SEL.
Parameter is used mainly in applications where feedback value is calculated
from a other variable (e.g. flow from pressure difference).
0
-32.768…32.767 Multiplier. If parameter value is set to zero, no multiplier is used. 1 = 0.001
4016 ACT1 INPUT Defines the source for actual value 1 (ACT1). See also parameter 4018
ACT1 MINIMUM.
AI2
AI1 Uses analog input 1 for ACT1 1
Parameters – complete descriptions
Index Name/Selection Description Def, FbEq
Ref
4013
4012
1301
1302
AI1 (%)
1301
1302
Ref
(MAX)
(MIN)
4013
4012
(MAX)
(MIN)
AI1 (%)
MAX > MIN MIN > MAX