User manual - CONTROLLER PUR-49D
“Omod”
- analogue output mode. Depending on version of the device there are following
options:
For active current output:
”
oFF
”
- current output disabled
,
“
4-20
”
- current output enabled with 4 ÷ 20 mA mode,
”
0-20
”
- current output enabled with 0 ÷ 20 mA mode.
For passive current output:
”
oFF
”
- current output disabled
,
“
4-20
”
- current output enabled with 4 ÷ 20 mA mode.
For active voltage output:
”
oFF
”
- voltage output disabled
,
”
0-5
”
- voltage output enabled with 0 ÷ 5V mode
,
”
1-5
”
- voltage output enabled with 1 ÷ 5V mode
,
”
0-10
”
- voltage output enabled with 0 ÷ 10V mode
,
“
2-10
”
- voltage output enabled with 2 ÷ 10 V mode.
”OUtL”
- this parameter defining the value for which the output signal is equal to the
lower
limit of the defined range (according to chosen mode of operation of the ”
Omod
”
output).
Parameter dependent on source for analog output:
- for the source type ”
InPU
” this is the display value,
- for the source type ”
PidH
” or ”
PidC
” is percentage value of the PID alghorithm's
output.
“OUtH”
- this parameter defining the value for which the output signal is equal to the
upper
limit of the defined range (according to chosen mode of operation of the ”
Omod
”
output).
Parameter dependent on source for analog output:
- for the source type ”
InPU
” this is the display value,
- for the source type ”
PidH
” or ”
PidC
” is percentage value of the PID alghorithm's
output.
The analogue output value is calculated due to formula given below:
Out
=
W
−
" OUtL"
"OUtH"
−
"OUtL"
×
B
−
A
A
where:
W
– source value,
Out
– analogue output value,
B
– higher range limit (20mA / 5V / 10V),
A
– lower range limit (0mA / 4mA / 0V / 1V / 2v),
“
OutL
” parameter can be greater than “
OutH
”. In this case the conversion
characteristic is reversed, it means that if input value raises the output value falls.
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