ABB ACS150 User Manual page 10

8
Parameters
Index Name/Selection
DI3U,4D(NC)
AI1+POT
AI1*POT
AI1-POT
AI1/POT
INTERNAL
DI4U,5D(NC)
FREQ INPUT
4011 INTERNAL SETPNT
x...x
4012 SETPOINT MIN
-500.0...500.0%
4013 SETPOINT MAX
-500.0...500.0%
4014 FBK SEL
ACT1
ACT1-ACT2
ACT1+ACT2
ACT1*ACT2
ACT1/ACT2
Update notice
Description
Digital input DI3: Reference increase. Digital input DI4: Reference decrease.
The program stores the active reference (not reset by a stop command).
When this selection becomes active (in change from EXT1 to EXT2), the
reference initializes to the value used when this control location (and this
selection) was active the last time.
Reference is calculated with the following equation:
REF = AI1(%) + POT(%) - 50%
Reference is calculated with the following equation:
REF = AI(%) · (POT(%) / 50%)
Reference is calculated with the following equation:
REF = AI1(%) + 50% - POT(%)
Reference is calculated with the following equation:
REF = AI1(%) · (50% / POT (%))
A constant value defined by parameter
See selection DI3U,4D(NC).
Frequency input
Selects a constant value as process PID controller reference, when
parameter 4010 SET POINT SEL value is set to 19 (INTERNAL).
Unit and range depend on the unit and scale defined by parameters
UNITS and 4007 UNIT SCALE.
Defines the minimum value for the selected PID reference signal source. See
parameter 4010 SET POINT SEL
Value in percent.
Example: Analog input AI1 is selected as the PID reference source (value of
parameter 4010 is 1 = AI1). The reference minimum and maximum
correspond to the 1301 MINIMUM AI1 and 1302 MAXIMUM AI1 settings as
follows:
Ref
MAX > MIN
4013
(MAX)
4012
(MIN)
1302
1301
Defines the maximum value for the selected PID reference signal source.
See parameters 4010 SET POINT SEL and
Value in percent
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
ACT1
Subtraction of ACT1 and ACT 2
Addition of ACT1 and ACT2
Multiplication of ACT1 and ACT2
Division of ACT1 and ACT2
4011 INTERNAL SETPNT
Ref
4012
(MIN)
4013
(MAX)
AI1 (%)
1301
4012 SETPOINT MIN.
4017 ACT2 INPUT.
Def
12
14
15
16
17
19
31
32
40
4006
0.0%
MIN > MAX
AI1 (%)
1302
100.0%
1 = ACT1
1
2
3
4
5