Control Modes - salmson SIE Serie Installation Et Mise En Service

English
Electronic module
1.5 – 7.5 kW:
1 2 3 4
8
11 – 22 kW:
1 8
6 4
Fig. 9: Electronic module
6.2

Control modes

H
H
max
H
s
s
H
min
Fig. 10: Δp-c control
H
H
H
max
H
s
½ H
s
H
min
Fig. 11: Δp-v control
72
5
7 6
5
2
3
7
Q
Q
Q
The electronic module controls the speed of the pump within the
control range that can be adjusted by the setpoint.
The hydraulic output is controlled by differential pressure and the set
control mode.
In all control modes, however, the pump adapts itself continuously to
the changing power requirements of the system, which is the case
especially when thermostatic valves or mixers are used.
The basic advantages of the electronic control are:
• Energy saving at the same time as reduced operating costs
• Reduced number of differential pressure valves required
• Reduction of flow noise
• Adaptation of the pump to changing operating requirements
Legend (Fig. 9):
1 Attachment points cover
2 The white button
3 Infrared window
4 Control terminals
5 Display
6 DIP switch
7 Power terminals (mains terminals)
8 Interface for IF-Module
The selectable control modes are:
Δp-c:
The electronics keep the differential pressure created by the pump above
the permitted feed flow range constantly at the pre-selected differential
pressure setpoint H up to the maximum pump curve (Fig. 10).
s
Q = Volume flow
H = Differential pressure (min./max.)
H = Differential pressure setpoint
S
NOTE:
For further information about setting the control mode and the associ-
ated parameters, see chapter 8 "Operation" on page 91 and chapter 9.4
"Setting the control mode" on page 108.
Δp-v:
The pump electronics linearly change the differential pressure set-
point to be kept by the pump between the delivery heads H
The differential pressure setpoint H
volume flow (Fig. 11).
Q = Volume flow
H = Differential pressure (min./max.)
H = Differential pressure setpoint
S
and ½ H
s
decreases or increases with the
s
Salmson 05/2015
.
s