3
Flow rate [m
/h]
100
75
50
25
5
50
70.7
86.6
Fig. 25 Regulation curve for MPC-F system in open loop
3
Flow rate [m
/h]
100
75
50
25
5
50
70.7
86.6
Fig. 26 Regulation curve for MPC-S system in open loop
Setting range
These settings must be made in connection with open loop:
•
Open loop
•
Set setpoint 1, open loop
•
External setpoint influence
•
Normal.
Flow rate
Pump 1
Pump 2
Pump 3
Pump 4
Input [%] from
external controller
100
Flow rate
Pump 1
Pump 2
Pump 3
Pump 4
Input [%] from
external controller
100
Setting via the operating panel
Proceed as follows to set an external control source to control the
system:
•
Operation > Further settings > Control mode.
•
Select: Open loop.
1. Press [Back] x 2.
2. Select: Stop
3. Set to 100 %: Set setpoint 1, open loop.
4. Settings > Primary controller > External setpoint influence >
Go to setting of analog input.
5. Select analog input and range.
6. Select:
•
Measured input value. Display 4.3.8.1.1 appears.
•
Select: 0-100 % signal.
7. Press [Back].
8. Set the minimum and maximum sensor value.
9. Press [Back] x 2.
10. Select:
•
Input value to be influenced by
•
0-100 % signal.
11. Press.
12. Select: Set the influence function. See also section
8.7.6 Setting of influence function
13. Set the number of points.
14. Set for Point 1:
•
External input value
•
Reduce setpoint to
15. Repeat step 14 for all selected points.
16. Press [Back].
17. Set as seconds: Filter time.
18. Select: Enabled.
19. Press [Back] x 2.
20. Select:
•
Operation
•
Normal.
The booster system can now be controlled by an external
controller.
Factory setting
Closed loop.
(4.1.3.2).
25