En
gl
is
h (
G
B)
20
12.9 Operating range
Set the operating range as follows:
•
Set the minimum speed within the range from
fixed minimum speed to user-set maximum
speed.
•
Set the maximum speed within the range from
user-set minimum speed to fixed maximum
speed.
The range between the user-set minimum and
maximum speeds is the operating range. See fig.
Fig. 21
Example of minimum and maximum
settings
12.10 External setpoint function
You can influence the setpoint by an external signal
via the analog input.
Example with constant pressure with linear
influence
Actual setpoint: actual input signal x (setpoint -
sensor min.) + sensor min.
At a sensor min. of 0 bar, a setpoint of 2 bar and an
external setpoint of 60 %, the actual setpoint is 0.60
x (2 - 0) + 0 = 1.2 bar. See fig.
.
Fig. 22
Example of setpoint influence with
sensor feedback
Example with constant curve with linear
influence
Actual setpoint: actual input signal x (setpoint -
user-set minimum speed) + user-set minimum
speed.
At a user-set minimum speed of 25 %, and a setpoint
of 85 % and an external setpoint of 60 %, the actual
setpoint is 0.60 x (85 - 25) + 25 = 61 %. See fig.
.
Fig. 23
Example of setpoint influence with
constant curve
12.10.1 "Setpoint influence" functions
You can select these functions:
•
Not active.
When set to Not active, the setpoint is not
influenced from any external function.
•
Linear function.
The setpoint is influenced linearly from 0 to 100
%. See fig.
.
Fig. 24
Linear function
TM
00
6
785
50
9
5
Before you can enable the function, you
must set the analog input to
External
setpoint function
.
See sections
.
TM
06
41
6
5
16
15
Fixed maximum speed
User-set maximum speed
Operating range
User-set minimum speed
Fixed minimum speed
24 %
13 %
0 %
67 %
100 %
100
0
100 %
0
1.2
2
[bar]
0
3.5 V
0.5
5 V
0
10 V
0
20 mA
0
20 mA
4
-50
204 C
Actual
input
signal
(60 %)
External
setpoint
signal
Setpoint
Sensor
max.
Sensor
min.
Actual
setpoint
TM
0
6
4
525
2
515
TM
06
416
6
161
5
100
0
100 %
0
3.5 V
0.5
5 V
0
10 V
0
20 mA
0
20 mA
4
-50
204 C
25
61
85
External
setpoint
signal
Speed [%]
Fixed
maximum
speed
Actual
input
signal
(60 %)
User-set
min.
speed
Setpoint
Actual
setpoint
100
0
100 %
0
3.5 V
0.5
5 V
0
10 V
0
20 mA
0
20 mA
4
-50
204 C
Setpoint influence [%]
External
input
