ABB ACQ580, Руководство по прошивке

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Parameters 227
40.70 Compensated
setpoint Compensated setpoint determined for the input specified by
parameter
40.71 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
40.71 … 40.76 .
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
40.71 Set 1 compensation
input source Selects the source for set 1 compensation input. Set1 output
min
Not selected None. 0
Reserved 1
Internal setpoint Internal setpoint. See parameter 40.19 Set 1 internal setpoint
sel1 .
2
AI1 scaled 12.12 AI1 scaled value (see page 125 ). 3
AI2 scaled 12.22 AI2 scaled value (see page 126 ). 4
Reserved 5…7
Motor
potentiometer 22.80 Motor potentiometer ref act (output of the motor
potentiometer).
8
Reserved 9
Freq in scaled 11.39 Freq in 1 scaled value (see page 122 ). 10
AI1 percent 12.101 AI1 percent value (see page 127 ) 11
AI2 percent 12.102 AI2 percent value (see page 127 ) 12
Reserved 13…14
No. Name/Value Description Def/FbEq16
x2,y2
x1,y1
x
y
x = value from 40.71 Set 1 compensation input source
y = 40.70 Compensated setpoint
a = 40.76 Set 1 compensation non-linearity
Compensated setpoint curve = a
*
squared fu
(1 - a)
*
linear function
a = -1
a = 1
a = 0