KSB PumpDrive, Инструкция по установке и эксплуатации

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Analog input 1 (Analog IN 1)
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Analog input 2 (Analog IN 2)
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The display (Configurable Setpoint (3-5-2-1)
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The field bus module (Field Bus Setpoint)
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The service interface (RS232 Setpoint)
Only one setpoint source is required in the majority of applications.
Up to 3 setpoint sources can be used simultaneously for setpoint specification. The
total across all the setpoint sources is calculated internally ( 1-3-1-4 Setpoint Total =
100 % max. of setpoint). This total setpoint makes it possible to use analog input 1,
the control panel or the field bus as the setpoint source, without having to
parameterise the source beforehand. Only one setpoint source is required in the
majority of applications. In these scenarios, it is recommended that the setpoint
sources not required be set to No Function.
Setpoint Source 1
Setpoint
Total
Setpoint
Total
Max Setpoint
Setpoint
Min Setpoint
Min Setpoint
Setpoint Source 2
Setpoint Source 3
*
+
+
+
=
Fig. 24: Total setpoint
The unit of the setpoint is defaulted to percentage (%) when delivered. The setpoint
range 0 - 100 % refers to an output frequency of 0 - 50 Hz in open-loop control
mode, and to 0 - 60 Hz or 0 - 70 Hz in over-synchronous operation. The minimum
output frequency Frequency Low
(3-6-1-2)
is set to 25 Hz (50 %) by default, i.e. the
setting range for the setpoint is 50 - 100 % (e.g. 5 - 10 V, 12 - 20 mA). If a setpoint
below 50 % is specified, PumpDrive always operates at its minimum frequency of
25 Hz (50 %).
Table 46: Units for setpoint specification
Parameter Description Unit
3-2-2-1
Setpoint unit Selection list III (
⇨
Section 10.1 Page
129)
If the setpoint unit is changed, all associated units such as those of the analog inputs
and pressure unit must also be changed to the same unit.
The following settings must be changed to specify the setpoint in a specific unit (e.g.
bar):
Table 47: Parameters for setpoint specification
Parameter Description Possible settings Factory setting
1-3-1-3
Display of setpoint total [unit] 0...9999 in physical unit of
setpoint (3-2-2-1) -
3-2-2-1 Setpoint unit Selection list III (
⇨
Section 10.1
Page 129)
%
3-5-2-1
Configurable setpoint 0...9999 in physical unit of
setpoint (3-2-2-1) 0 %
3-5-1-2
Minimum setpoint 0...9999 in physical unit of
setpoint (3-2-2-1) 0 %
3-5-1-3 Maximum setpoint 0...9999 in physical unit of
setpoint (3-2-2-1) 100 %
3-5-4-1
Source of setpoint 1 None
Analog IN 1
Analog IN 2
Configurable Setpoint
Field Bus Setpoint
RS232 Setpoint Analog IN
3-5-4-2
Source of setpoint 2 Configurable Setpoint
3-5-4-3
Source of setpoint 3 Field Bus Setpoint
The units set for the setpoint and actual value must be identical to prevent errors in
the control function. The sensor measuring range determines the setting values for
the setpoint and actual value. If, for example, a pressure sensor with a range of 0 - 6
Setpoint sources
Setpoint unit
Setpoint specification
7 Commissioning/shutdown
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PumpDrive