Siemens CU240S DP Operations Instructions Page 15

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Installing/Mounting
1.1 Fitting the CU to the PM
Control Units CU240S
Operating Instructions (Compact), 04/2006, A5E00766042B AA
1-7
1.2.4 Voltage input control wiring
Frequency setpoint and an additional setpoint via terminals
AI0 and AI1 used as voltage inputs
This type of control wiring allows a main frequency setpoint and an additional setpoint to be
established, using potentiometers on analog inputs AI0 and AI1.
The figure below shows the wiring that is necessary to accomplish this functionality.
DIP switch Settings
The general I/O DIP switch is used to configure the analog inputs (AI). Use DIP switches 1
and 2 to set the switches to the OFF position. For detailed information refer to "Analog input"
in section "Function".
Parameter Settings
No additional parameters require to be modified.
$,

$,

$2

$2

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
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
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$2
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,1
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,1
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37&
37&
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8989
(1&
6833/<
',',',',',',',',',
   
'2
1&
'2
12
'2
&20
'2
12
'2
&20
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1&
'2
12
'2
&20
(1&
$3
(1&
$1
(1&
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(1&
%1
(1&
=3
(1&
=1
             
ุN˖ ุN˖
Figure 1-6 Terminal connection and DIP switch setting for using AI0 and AI1 as main and additional
setpoint
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