78
WT.050.580.000.DE.IM.0714
Functions
MFC
4.
Required module configuration:
•
MOD1
-
To record the measured value
•
MOD5
-
mA/V input module to record
flow rates as well as the external dosing factor
Input signals:
•
Module 1 measured value recording
•
Flow measurement (0/4–20mA, 0–10V) scalable (module 5)
•
Second control variable possible via sensor measuring
module 1
•
Internal or external dosing factor (0/4–20 mA module 5)
The following controller outputs are possible:
•
Dosing pumps
•
Solenoid pump
•
Positioner with feedback 1kOhm/5kOhm
•
mA analog output
How the single feed forward
control works
The flow rate is recorded and the dosing rate adjusted
proportionally to the flow rate using the flow rate sensor with linear
mA/V output signal.
For the flow signal settings, see menu "Input/Output" – “Flow Wq“.
The ratio between control variables and dosing output is
determined by the internal dosing factor (control
"Dos.Fact.Source" = internal), or it can also be set by an external
mA/V input signal (Dos.Fact.Source = external).
You can switch between internal and external dosing factor (DF)
via the digital input ("Dos.Fact.Source" = "external with DI3" or
"internal with DI3").
It is possible that a second control variable "Measured Value X"
(measured value from module 1) will proportionally or reverse
proportionally influence the single feed forward control ("X-
direction" = direct / inverse variable).
The second control variable X is activate if the parameter "Control
Variable X" "Measured Value X" (second control variable
deactivated by "Off" setting (factory setting).
The amplification factor for this parameter is defined by the X-
factor input parameter.
Содержание WALLACE & TIERNAN MFC
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Страница 6: ...6 WT 050 580 000 DE IM 0714 Introduction MFC 1...
Страница 40: ...40 WT 050 580 000 DE IM 0714 Description MFC 3...
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Страница 247: ...MFC Certificates 10 247 10 Certificates...
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Страница 262: ...262 WT 050 580 000 DE IM 0714 Settings table MFC 11...
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