Elettronica Santerno SINUS/ISD 200 S-0.75, User Manual, Page: 65 / 206

SINUS/ISD 15P0082B8
USER MANUAL
6 - 9/82
Functional Description
The SINUS/ISD inverter has two analog inputs. There is an analog input function block for each: ANALOG
INPUT 1 is associated with the signal on terminal 2, ANALOG INPUT 2 is associated with the signal on terminal
4.
The input voltage is pre-processed and converted into a numeric value by the analog input electronics of the
SINUS/ISD inverter. The analog input function blocks further process this reading so that a value of 0.00%
represents an input equal to the low input range, while a value of 100.00% represents an input equal to the high
input range. The SCALE and OFFSET factors are then applied as shown to produce a value suitable for use in
the application.
The break detect facility may only be used in conjunction with the following hardware ranges: 2 to 10V, 1 to 5V,
4 to 20mA and 20 to 4mA. An input break is defined as an input reading less than either 0.1V or 0.45mA. When
an input break has been detected, the VALUE output is forced to be the BREAK VALUE .
Configuration Switch Settings (SW1)
The analog input terminals are configured for voltage or current operation by the I/O configuration switch
settings. Remember to select the appropriate TYPE parameter.
Table 6- Table 6-2 2 Select Input Signal Select Input Signal
Figure 6- Figure 6-3 3 I/O Configuration I/O Configuration
Switches shown at Switches shown at
Manufacturing Defaults
Manufacturing Defaults
+
VALUE
SCALING OFFSET
X
INPUT
BREAK VALUE
INPUT LOSS LEVEL
BREAK ENABLE
BREAK
TYPE
UNPROCESSED
OFF
SW1
1
2
3
4
ON
SW2
1
2
3
4
ON
OFF
Input Input Type Type Switch Settings Switch Settings
ANALOG
INPUT
1
0-20 or 4-20mA SW1/1 OFF, SW1/2 ON
Terminal 2 0-10V* SW1/1 OFF, SW1/2 OFF*
±
10V
SW1/1 ON, SW1/2 OFF
ANALOG
INPUT
2
0-20 or 4-20mA SW1/3 OFF, SW1/4 ON
Terminal 4 0-10V* SW1/3 OFF, SW1/4 OFF*
±
10V
SW1/3 ON, SW1/4 OFF
* Default settings, as shown