Simex MultiCon CMC-99/141 User Manual page 172

User Manual For - CONTROLLER/DATA RECORDER MultiCon CMC-99/141
Unit – defined permanently, it occurs only for the Current output,
–
Source – this parameter contains a Logical channels list where the selected logical
–
channel will be a data source for this built-in output, data from this source is
calculated according to the parameters gathered in the the Input levels and Output
levels blocks,
– Input levels parameter block - determines the range of a data source for this built-in
output, this block has the following parameters:
Lower level and Upper level - these parameters limit the range of the input
•
signal selected in the Source parameter, below this range the input signal will
have a Lower level value and above this range the signal will have an Upper
level value,
– Output levels parameter block - determines the range of an output value, this block
has the following parameters:
Lower level and Upper level - these parameters limit the range of the output
•
signal, below this range the input signal will have a Lower level value and
above this range the signal will have an Upper level value, the relationship
between Lower and Upper levels is linear and it is limited by a defined range,
see Fig. 7.97,
Alarm level – this parameter defines the output value, when an alarm state
•
appears, but with maintaining a hardware output limitation (3÷22mA). An alarm
state is when the source logical channel returns -Err- or the state of exceeding
range: the low -Lo- state and high -Hi- state.
Lower level and Upper level parameter describes the transfer equation (linear) - see
Fig. 7.96 . Lower level of the output defines the current which can be generated when the
value of the input signal equals the Lower level. Upper level of the output defines the current
which can be generated when the value of the input signal equals the Upper level .
Upper level
Output levels
Lower level
Fig. 7.96. Input (red)-output (blue) characteristic of signal in Current output module
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30
25
20
15
10
5
0
-4 -2 0 2 4
Lower level
6 8 10 12 14 16 18 20 22 24 26 28
Input value
Input levels Upper level