7.1.1.3.1 Open-loop control mode using external standard signal
By default, analog input 1 (terminal P7:9 AnIn1 and 10 AGND P7) is set as the
setpoint source (
3-5-4-1
). A direct voltage of 0 to 10 V (0 to 100 %) is expected as the
signal. If a current signal, e.g. 4 - 20 mA (0 - 100 %) is to be used, the Anln1 Setting
parameter (
3-8-2-1
) has to be set to Current. The setpoint input can be adapted to
the signal by using the parameters
3-8-2-2
to
3-8-2-5
. At a setpoint ≤ 50 %,
PumpDrive always operates at a minimum frequency of 25 Hz (
3-6-1-2
: 50 %) set in
the factory. If the setting range of the setpoint signal is to apply from the minimum
frequency (
3-6-1-2
) on, the AnIn 1 Low parameter (
3-8-2-7
) has to be set to 50 % and
the corresponding unit.
At analog input 1, a setpoint of 78 % is to be set via a 0 - 10 V voltage signal. 7.8 V
then corresponds to a speed of 39 Hz (
3-11-4-1
maximum output frequency = 50 Hz)
Table 50: Sample parameterisation of analog input 1
Parameter Description
Settings
Factory setting
3-2-2-1
Setpoint unit
%
%
3-2-2-3
Pressure unit
%
%
3-5-1-2
Minimum setpoint
0
0
3-5-1-3
Maximum setpoint
100
100
3-5-4-1
Setpoint source 1
Analog IN 1
Analog IN 1
3-5-4-2
Setpoint source 2
None
Configurable Setpoint
3-5-4-3
Setpoint source 3
None
Remote Setpoint
3-8-2-1
AnIn 1 setting
Voltage
Current
3-8-2-2
Analog IN 1 Low voltage
0
0
3-8-2-3
Analog IN 1 High voltage
10
10
3-8-2-6
Unit of Analog IN 1
%
%
3-8-2-7
Low value for Analog IN 1
0
0
3-8-2-8
High value for Analog IN 1
100
100
3-9-1-1
PI mode
Disabled
Disabled
3-9-1-6
PI Auto
Deactivated
Activated
Maintain the following sequence for deactivating the process controller:
1.
Change parameter
3-9-1-6
.
2.
Change parameter
3-9-1-1
.
⇨
The value displayed for parameter
1-3-1-3
Setpoint is 78 %.
7.1.1.3.2 Open-loop control mode via control panel
Graphical control panel
The speed setpoint can be specified using the control panel. For this purpose, the
Setpoint Source 2 parameter
(3-5-4-2)
must be set to Configurable Setpoint (factory
setting).
The setpoint is specified using the Configurable Setpoint parameter
(3-5-2-1)
. The
setpoint unit is set using the Setpoint Unit
(3-2-2-1)
and Max Setpoint
(3-5-1-3)
A 2-pole motor is to run with a speed of 2500 rpm. This corresponds to a frequency
of 41.67 Hz. A setpoint of 83.33 % must be set at the control panel for this purpose.
(for
3-11-4-1
maximum output frequency = 50 Hz)
n
n
- n
(
-
) =
[%]
2500
1
3000
1
- 1500
1
(100% - 50%) = 83,33%
Target
Target Target Target
Max.
Max.
Min.
Min.
Min.
Min.
Min.
Fig. 26: Sample calculation
Table 51: Sample parameterisation of open-loop control mode via control panel
Parameter Description
Settings
Factory setting
3-2-2-1
Setpoint unit
%
%
3-2-2-3
Pressure unit
%
%
Example
Example
7 Commissioning/shutdown
52 of 162
PumpDrive
