Operating instructions
Functions
5.4 Setpoint sources
CU240S and CU240E Control Units, FW 3.2
98 Operating Instructions, 03/2009, A5E02440075B AA
Table 5- 18 Example: Scaling an analog input to 4 - 20 mA
Terminal No.
and
Significance
Parameters Description
Setting the DIP
switch
OFF: Voltage input (factory setting)
ON: Current input
9VXSSO\
9VXSSO\
7HUPLQDWH
7UDFN$
7HUPLQDWH
7UDFN%
7HUPLQDWH
7UDFN1
21
234
5
67
$,
$,
2))
3 AI0+
4 AI0-
P0756 [0] Analog input 1
10 AI1+
11 AI1-
P0756 [1] Analog input 2
P0756 = 2 Analog input type (AI)
2: Unipolar current input (0 mA …20 mA)
P0757 = 4.0 Value x1 of AI scaling [mA]
P0758 = 0.0 Value y1 of AI scaling
This parameter shows the amount of x1 as a % of P2000
(reference frequency)
P0759 = 20 Value x2 of AI scaling [mA]
P0760 = 100 Value y2 of AI-scaling
This parameter shows the amount of x2 as a % of P2000
(reference frequency)
P761 = 4.0 Width of the AI dead zone