7.10 Separate set point
The universal input UE2 is configured automatically as a binary input when the Separate set
point parameter is activated. When the binary input is activated, the controller uses the sepa
-
rate set point for control. The controller uses the
Set point demand for closed-loop control.
Note: When the separate set point is deactivated, the universal input UE2 is configured for
the external demand as a 0-10-V input. Refer to section 7.9.
2
[Übersicht > Parameter > Allgemein]
Parameters WE Adjustment range
Separater Sollwert
(separate set point)
AUS EIN (on), AUS (off)
Sollwert Anf.
(set point demand)
65 °C 20 to 120 °C
7.11 Position feedback
When this function is active, the valve position of each control valve is issued as a signal:
4
Position feedback SRM1 at UE5 (heat exchanger WT1):
0 to 10 V or 1 to 2 k
Ω
4
Position feedback SRM2 at UE4 (heat exchanger WT2):
0 to 10 V or 1 to 2 k
Ω
4
Position feedback SRM3 at ModBus I/O 1402-0328 (4), UE2 (heat exchanger WT3):
0 to 1 k
Ω
The exact values must be adjusted on start-up by calibrating the measuring range to the potenti
-
ometer installed in the actuator. The controller assigns the bottom end position to the 0 % value
and the top end position to the 100 % value.
The analog 0 bis 10 V signal corresponds to the range between 0 and 100 % in a linear
manner.
Note:
–
The values for position feedback are changed in the menu of the WT71 application and
saved in a non-volatile memory. The values write over the universal input values of the
PLC after a power supply failure.
–
If no position feedback is connected, the issued value is displayed in the system scheme.
EB 5571-2 EN 43
General functions
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