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Settings:
1.
Settings on temperature / current range
Select
analogue interface / config. input / adjust measurement range
Enter the temperature range to correspond to 0/4-20mA
(T1=0 °C, T2=100
°C).
2.
Select input signal
Select the input signal (
AIF-> set-point)
via
analogue interface / config. input /
AIF-Input - Function
3.
Select output signal
Select the output signal (
Process temp.)
via
analogue interface / config. output /
output range
4.
Select action if cable breaks
Select
analogue interface / config. input / on cable break
Trigger an alarm.
5.
Select action upon analogue error
Select
analogue interface / config. input / on analogue error
Switch off.
6.
The settings can be reviewed by selecting:
analogue interface / config. input / display AIF values.
Please note that the fine signal adjustment functions the same for the analogue output
as it does for the input.
Setting information for fine adjustment.
General:
When the machine is delivered and after a Reset (Reset AIF input) the interface
will be set accurately enough. An adjustment is not necessarily required.
It is possible at any time to adjust the precision of the input channel. This could be
required if the set-point input current does not coincide with the expected temperature
value. If as shown in point 1 above, an input of 4.000mA does not give exactly 0°C,
but maybe 1°C. A fine adjustment can then be made. Change to menu point
analogue
interface / config. input / fine adjust
/
xxxxx
. Feed 4.000mA into the interface. Confirm
the value. Choose then
analogue interface / config. input / fine adjust
/
xxxxx
. Feed
then 20.000mA into the interface. Confirm the value. At the end, a current input of
exactly 4.000mA should give a set-point of 0°C and a current input of 20.000mA
should give a set-point of 100°C.
The fine adjustment of the output channel is done in a similar manner. A sensor value
of 0°C and 100°C should give an output current value of 4.000mA and 20.000mA.
