118
ACS510 User’s Manual
Start-Up
Analog Input Reference Correction
Parameter values 9, 10, and 14…17 use the formula in the following table.
Where:
• C = Main Reference value
( =
COMM
for values 9, 10 and
=
AI
1 for values 14…17).
• B = Correcting reference
( =
AI
1 for values 9, 10 and
=
AI
2 for values 14…17).
Example:
The figure shows the reference source curves for
value settings 9, 10, and 14…17, where:
• C = 25%.
• P 4012
SETPOINT
MIN
= 0.
• P 4013
SETPOINT
MAX
= 100.
• B varies along the horizontal axis.
4011
INTERNAL SETPNT
Sets a constant value used for the process reference.
Units and scale are defined by parameters 4006 and 4007.
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 (
ACT
1 and
ACT
2) as the feedback signal.
• Use parameter 4016 to define the source for actual value 1 (
ACT
1).
• Use parameter 4017 to define the source for actual value 2 (
ACT
2).
1 =
ACT
1 – Actual value 1 (
ACT
1) provides the feedback signal.
2 =
ACT
1-
ACT
2 –
ACT
1 minus
ACT
2 provides the feedback signal.
3 =
ACT
1+
ACT
2 –
ACT
1 plus
ACT
2 provides the feedback signal.
4 =
ACT
1*
ACT
2 –
ACT
1 times
ACT
2 provides the feedback signal.
5 =
ACT
1/
ACT
2 –
ACT
1 divided by
ACT
2 provides the feedback signal.
6 =
MIN
(
ACT
1, 2) – The smaller of
ACT
1 or
ACT
2 provides the feedback signal.
7 =
MAX
(
ACT
1, 2) – The greater of
ACT
1 or
ACT
2 provides the feedback signal.
8 =
SQRT
(
ACT
1-2) – Square root of the value for
ACT
1 minus
ACT
2 provides the feedback signal.
9 =
SQA
1 +
SQA
2 – Square root of
ACT
1 plus the square root of
ACT
2 provides the feedback signal.
10 =
SQRT
(
ACT
1) – Square root of
ACT
1 provides the feedback signal.
11 =
COMM FBK
1 – Signal 0158
PID COMM VALUE
1 provides the feedback signal.
12 =
COMM FBK
2 – Signal 0159
PID COMM VALUE
2 provides the feedback signal.
13 =
AVE
(
ACT
1, 2) – The average fo
ACT
1 and
ACT
2 provides the 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
SEL
-32.768…32.767 = Multiplier applied to the signal defined by parameter 4014
FBK
SEL
.
Example:
Code Description
Value Setting
AI reference is calculated as following:
C + B
C value + (B value - 50% of reference value)
C * B
C value * (B value / 50% of reference value)
C - B
(C value + 50% of reference value) - B value
C / B
(C value * 50% of reference value) / B value
120
100
80
60
40
20
0
0
100%
9, 14 (+)
16 (-)
10, 15 (*)
17 (/)
B
FBK
Multiplier
A1 A2
–
×
=
Supplied from China by: Guangzhou Tofee Electro Mechanical Equipment Co., Ltd
Email: [email protected]
