Evoqua Wallace & Tiernan SFC-SC, Manual, Page: 58 / 83

WT.050.590.002.UA.IM.0614 44
SFC ANALYZER / CONTROLLER
EVOQUA W3T109634
Ty
Meaning: Running time of the positioner.
Display: Seconds (s).
Explanation: The parameter Ty only applies to positioners.
Ty is the time which the positioner requires to adjust from 0% to 100%.
Setting range: The parameter Ty can be set from 10–180 s.
ym Calibration
This parameter is only possible for dosing output positioner with feedback.
Adjust the positioner feedback signal to 0% and 100% dosing capacity.
When automatic Ym calibration is started, the positioner moves to posi-
tions 0% and 100% and calibrates both positions with the SFC-SC. Prior
to starting the automatic Ym calibration, manually set the positioner to
midscale and confirm the SFC-SC is receiving the feedback signal.
With manual calibration of the up-to-11 positions, all positions must be
shifted to manual and saved in the menu using the Enter key.
3.6 Serial port for firmware Updates
Via the serial interface of a laptop/PC, it is possible to update the firmware
of the SFC-SC. A special download software and the latest firmware including
a description can be downloaded from the Wallace & Tiernan homepage at
www.wallace-tiernan.eu. A special update cable is available for the firmware
update, refer to spare parts section for part number.
3.7 Actuator feedback
The actuator feedback of the SFC-SC is set at the factory to potentiometer
with 1 kOhm. For other feedback signals the device must be reset using the
DIP switch S4 (see IC board).
Possible signals are:
• Potentiometer 1 KOhm
• Potentiometer 5 KOhm
• 0/4–20mA signal
• 0–1V signal