Evoqua Wallace & Tiernan SFC-SC, Manual

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WT.050.590.002.UA.IM.0614 45
SFC ANALYZER / CONTROLLER
EVOQUA W3T109634
Switch settings of DIP switch S4:
S4-A
1
S4-B
2
S4-C
3
Potentiometer 1K Off Off On
Potentiometer 5K Off Off Off
0/4-20mA On On Off
0-1 V On On Off
3.8 Digital Inputs
Two digital inputs are integrated in the IC board of the SFC-SC. These are
provided for connecting voltage-free contacts (< 100 Ohm) and are supplied
internally with 12 V. Various processing and switching functions can be trig-
gered using the digital inputs.
WARNING: NO VOlTAGE MAy BE ApplIED TO ThE DIGITAl INpUT TER-
MINAlS!
3.9 Unit Configuration
The SFC-SC gives the option of saving all unit settings as a configuration.
Unit settings include all parameters that can be set in the menu, such as
the dosing factor, control output, etc. A maximum of two configurations
can be saved in the internal memory SFC-SC.
If configurations are saved in the internal memory as Job 1 and Job 2, they
can be restored when required as the current unit settings. The previous unit
settings are deleted in the process. It is possible to switch between Job 1 and
Job 2 via digital input 1 or 2.
When "Job 2" is selected, a signal on the digital input causes configuration 2 to
be loaded, and the SFC-SC continues to operate with the unit settings of Job 2.
If the signal on the digital input is deactivated, then configuration 1 is loaded
again and the SFC-SC continues to operate with the unit settings of Job 1.
The digital input needs to be assigned to Job 2 in both configurations.
!