27
English (US)
Types of setpoint influence
•
Not active
•
Linear function
•
Linear with Min.
These functions can be selected:
•
Not active
When set to "
Not active
", the setpoint will not be influenced
from any external function.
•
Linear function
The setpoint is influenced linearly from 0 to 100 %. See fig. 41.
Fig. 41
Linear function
–
Linear with Min.
In the input signal range from 20 to 100 %, the setpoint is
influenced linearly.
If the input signal is below 10 %, the pump will change to
operating mode "
Min.
".
If the input signal is increased above 15 %, the operating
mode will be changed back to "
Normal
".
See fig. 42.
Fig. 42
Linear with Min.
8.1.14
Pump number
A unique number can be allocated to the pump. This makes it
possible to distinguish between pumps in connection with bus
communication.
8.1.15
General settings
Language
A number of languages is available.
Measuring units are automatically changed according to selected
language.
8.2
Assist
8.2.1 Alternating operation
Only one pump is operating at a time. The change from one pump
to the other depends on time or energy. If a pump fails, the other
pump will take over automatically.
Pump system:
• Two pumps connected in parallel.
The pumps must be of the same type and size. Each pump
requires a non-return valve in series with the pump.
8.2.2 Back-up operation
One pump is operating continuously. The back-up pump is
operated at intervals to prevent seizing up. If the duty pump stops
due to a fault, the back-up pump will start automatically.
Pump system:
• Twin-head pump.
• Two single-head pumps connected in parallel.
The pumps must be of the same type and size. Each pump
requires a non-return valve in series with the pump.
T
M
05
62
80
46
12
T
M
05
62
81
46
12
100
0
100
20
40
60
80
Setpoint influence
[%]
External input
[%]
100
0
100
20
40
60
80
Setpoint influence
[%]
External
input [%]
Normal
Min.
Digital inputs
Setpoint
2
3
4
0
0
0
Normal setpoint
1
0
0
Predefined setpoint 1
0
1
0
Predefined setpoint 2
1
1
0
Predefined setpoint 3
0
0
1
Predefined setpoint 4
1
0
1
Predefined setpoint 5
0
1
1
Predefined setpoint 6
1
1
1
Predefined setpoint 7
