ABB DriveIT ACH550-01 User Manual page 280

Code Description
4012 SETPOINT MIN
Sets the minimum value for the reference signal source. See
parameter 4010.
4013 SETPOINT MAX
Sets the maximum value for the reference signal source. See
parameter 4010.
4014 FBK SEL
Defines the PID controller feedback (actual signal).
• You can define a combination of two actual values (
as the feedback signal.
• Use parameter 4016 to define the source for actual value 1 (
• Use parameter 4017 to define the source for actual value 2 (
1 = 1 – Actual value 1 (
ACT
2 = 1-
ACT
3 = 1+
ACT
4 = 1*
ACT
5 = 1/
ACT
6 = (
MIN
signal.
7 =
MAX
signal.
8 =
SQRT
provides the feedback signal.
9 = 1 +
SQA
provides the feedback signal.
10 =
SQRT
feedback signal.
4015 FBK MULTIPLIER
Defines an extra multiplier for the PID
FBK value defined by parameter 4014.
• Used mainly in applications where the flow is calculated from the
pressure difference.
0 =
NOT USED
-32.768...32.767 = Multiplier applied to the signal defined by
parameter 4014
Example:
276
2 – 1 minus
ACT ACT
2 – 1 plus
ACT ACT
2 – 1 times
ACT ACT
2 – 1 divided by
ACT ACT
1, 2) – The smaller of
A A
( 1, 2) – The greater of
A A
( 1- 2) – Square root of the value for
A A
2 – Square root of
SQA
( 1) - Square root of the value for
ACT
.
FBK SEL
=
FBK Multiplier
ACH550 User's Manual
1) provides the feedback signal.
ACT
2 provides the feedback signal.
ACT
2 provides the feedback signal.
ACT
2 provides the feedback signal.
ACT
2 provides the feedback signal.
ACT
1 or
ACT ACT
1 or
ACT ACT
1 plus the square root of
ACT
.
× ∠
A1 A2
Parameter listing and descriptions
Range
-500.0%...500.0%
-500.0%...500.0%
1...10
1 and
ACT
2 provides the feedback
2 provides the feedback
1 minus
ACT ACT
1 provides the
ACT
-32.768...32.767,
0=NOT DEFINED
2)
ACT
1).
ACT
2).
ACT
2
2
ACT