Evoqua WALLACE & TIERNAN SFC, Original Instruction Manual

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WT.050.590.000.DE.IM.0719
Functions
SFC
4.
4.2.9 mA inputs of the A&C boards
The A&C board integrates two mA inputs (mA 1 and mA 2) for
recording process parameters.
mA input 1
Used for recording the flow rate signal as 0 – 20 mA or 4 – 20 mA
signal.
mA input 2
Used for recording an external setpoint value or dosing factor as
0 – 20 mA signal
Both input signals can be freely scaled in the menu (see Inputs/
Outputs menu).
Special Function
When measuring the combined chlorine, it is also possible to
record the measured value „free chlorine“, which is required for
combined chlorine measurement, via mA input instead of CAN
bus. However, single feed forward and compound loop, with
recording of the flow rate, will then no longer be supported by SFC.
4.2.10 CAN sensor measurement module SiDiSens
SiDiSens is an external CAN bus component which can be used
to add a measurement input to the SFC.
Using the integrated connecting cable the module is directly
plugged into SFC. The M12 socket in the SiDiSens housing is
provided for the bus terminal plug included in the scope of delivery.
The relevant sensor is attached to the SiDiSens and the
measurement data is transmitted to the SFC via the CAN bus.
If a SiDiSens is connected to the SFC, the associated
measurement is automatically detected upon start-up of the device
and the necessary menus for parameterisation are enabled.
Assignment to mA output and entry of limit values is possible. The
measurement values are presented as a line diagram and stored
on the SD memory card.
The status LED in the SiDiSens housing provides information on
the current status.
While the connection is being established the LED either flashes
red/green quickly or green slowly. As soon as communication is
established with the SFC it lights up a continuous green.
A CAN bus fault is indicated by a red illuminated LED.
The SiDiSens is designed as a wall mounting module. Using an
optionally available assembly set it can also be fixed to a top-hat
rail.