SSD 605C, Product Manual

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Programming Your Application
6-9
605C Frequency Inverter
Functional Description
The Inverter has four analog inputs. There is an analog input function block for each:
ANALOG INPUT 1 is associated with the signal on terminal 1
ANALOG INPUT 2 is associated with the signal on terminal 2
ANALOG INPUT 3 is associated with the signal on terminal 3
ANALOG INPUT 4 is associated with the signal on terminal 5
The input voltage is pre-processed and converted into a numeric value by the analog input
electronics of the 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 .
BREAK ENABLE Range: FALSE / TRUE
For input types that support sensor break detection, this parameter may be used to disable
sensor break detection. For input types that do not support break detection, this parameter is
FALSE.
BREAK VALUE Range: -300.00 to 300.00 %
The value that will appear as the VALUE output when BREAK is TRUE
VALUE Range: xxx.xx %
The input reading with scaling and offset applied.
BREAK Range: FALSE / TRUE
Indicates that the input sensor signal is not present. See below for more details on break
detection.
+
VALUE
SCALING OFFSET
X
INPUT
BREAK VALUE
INPUT LOSS LEVEL
BREAK ENABLE
BREAK
TYPE
UNPROCESSED