Parameters 227
Compensated setpoint determined for the input specified by
parameter
Set 1 compensation input source
The setpoint compensation can be used with long pipelines
where the distance between setpoint and sensor is long and
the friction losses need to be compensated to get the correct
value.
The determination of the compensated setpoint is based on
the curve specified by points (x1, y1), (x2, y2) and the non-
linearity of the curve specified with parameters
.
The compensated setpoint curve will be a mixture of a
straight line between the points and a squared line between
the points:
-200000.00…
200000.00 PID
customer units
Compensated setpoint value.
1 = 1 PID
customer unit
Set 1 compensation
input source
Selects the source for set 1 compensation input.
Not selected
None.
0
Reserved
1
Internal setpoint
Internal setpoint. See parameter
.
2
AI1 scaled
(see page
).
3
AI2 scaled
(see page
).
4
Reserved
5…7
Motor
potentiometer
(output of the motor
potentiometer).
8
Reserved
9
Freq in scaled
(see page
). 10
AI1 percent
11
AI2 percent
12
Reserved
13…14
No.
Name/Value
Description
Def/FbEq16
x2,y2
x1,y1
x
y
x
= value from
Set 1 compensation input source
y
=
Set 1 compensation non-linearity
Compensated setpoint curve = a
*
squared fu
(1 - a)
*
linear function
a = -1
a = 1
a = 0
Summary of Contents for ACQ580
Page 1: ...ABB drives for water Firmware manual ACQ580 pump control program ...
Page 4: ... 2017 ABB Oy All Rights Reserved 3AXD50000035867 Rev C EN EFFECTIVE 2017 06 21 ...
Page 30: ...26 Start up control with I O and ID run ...
Page 40: ...36 Default configuration ...
Page 304: ...300 Parameters ...
Page 340: ...336 Additional parameter data ...