Evoqua WALLACE & TIERNAN SFC User guide

WALLACE & TIERNAN®MEASURING AND CONTROL
SYSTEM
SFC
from version V:3.08
INSTRUCTION MANUAL

2 WT.050.590.000.DE.IM.0719
SFC
Please note
Original instruction manual!

SFC Contents
3
Contents
1. Introduction 5
1.1 Documentation 5
1.2 Conventions 6
2. Safety 7
2.1 Intended use 7
2.2 General safety instructions 7
2.3 Warranty conditions 8
2.4 Specific Operating Phases 9
2.5 Notes on Special Dangers 10
3. Description 11
3.1 Versions 11
3.2 Technical Data 12
3.3 Scope of supply 28
3.4 Description 30
4. Functions 41
4.1 General 41
4.2 Measurement inputs 45
4.3 Outputs 66
4.4 SFC CAN retrofit kit 67
4.5 Applications 68
4.6 Controller outputs 84
4.7 Control parameters 87
4.8 Alarms 95
4.9 Adaption 98
4.10 Sample water inlet disinfection 103
4.11 Serial interfaces 106
4.12 CAN interface 107
4.13 Fieldbus 110
4.14 Firmware update 111
4.15 Actuator feedback 113
4.16 Digital inputs 113
4.17 SD memory card 114
4.18 Unit configuration 116
4.19 Special Features 117

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Contents SFC
5. Installation 119
5.1 Transport and storage 119
5.2 Installation 119
5.3 Commissioning 129
5.4 System shut down 155
6. Operation 157
6.1 Display and operator controls 157
6.2 Notes on operation 163
6.3 Menu structure 165
6.4 Calibration 201
6.5 Errors and remedies 213
7. Maintenance 219
7.1 Maintenance Schedules 219
7.2 Maintenance of flow block assembly DEPOLOX® 5 222
7.3 Maintaining membrane sensors 227
7.4 Maintaining Redox electrode 227
7.5 Maintaining pH electrode 228
7.6 Maintaining fluoride electrode 228
7.7 Maintaining conductivity electrode 229
7.8 Changing the fuse on the A&C board 230
7.9 Replacing the battery 231
8. Complete Units, Retrofit Kits and Spare Parts 233
9. Wiring Diagrams 267
10. Declarations and certificates 273
10.1 Declaration of Conformity 273
10.2 Certificate of Compliance 275
11. Settings Table 277
12. Index 285

SFC Introduction
1.
5
1. Introduction
1.1 Documentation
1.1.1 Target groups
This instruction manual provides the information for installation,
operating and maintenance personnel. It is required for operation
and maintenance of the unit.
This instruction manual is intended for the operating personnel. It
contains important information for safe, reliable, trouble-free and
economical operation of the unit. Observance of this information
helps to prevent danger, lowers repair costs, reduces down-times,
and also increases the reliability and service life of the unit.
The chapters on installation and maintenance are solely provided
for trained service personnel. These sections contain important
information on the installation, configuration and commissioning of
the unit as well as information on its repair.
All persons working with the unit must have read and understood
the operating instructions, in particular, the safety instructions it
contains.
Please consult the table of contents and the index to find the
information you require quickly.

6 WT.050.590.000.DE.IM.0719
Introduction SFC
1.
1.2 Conventions
Please note
This operating manual contains a number of notes with different
priorities, which are marked with symbols.
Picto-
gram Note Meaning
Danger! Immediate danger to life and limb!
If the situation is not handled
properly, death or serious injury
may be the result.
Warning! Danger to life and limb! If the
situation is not handled properly,
death or serious injury may be the
result.
Caution! If this warning is not observed,
medium or slight injury or damage
to the equipment may the result.
Warning! Electrical hazard.
Please note These notes facilitate work with the
unit.

SFC Safety
2.
7
2. Safety
2.1 Intended use
The SFC is exclusively designed for measurement and control
tasks required for the treatment of waste water, potable water,
industrial water, and bathing water.
The operational safety of the unit is only guaranteed if it is used in
accordance with its intended application. The unit may only be
used for the purpose defined in the order and under the operating
conditions indicated in the technical specifications.
Compliance with the intended use also includes reading this
operating manual and observing all the instructions it contains.
Furthermore, all inspection and maintenance work must be
performed at the prescribed intervals.
The operator bears full and sole responsibility if this unit is put to
any use which does not comply strictly and exclusively with this
intended use.
2.2 General safety instructions
Evoqua Water Technologies GmbH attaches great importance to
ensuring that work on its system is always perfectly safe. This was
already taken into account in the design of the system, by the
integration of safety features.
Safety instructions The safety instructions in this documentation must always be
observed. These do not affect the validity of any additional national
or company safety instructions.
Safety instructions on the
system All safety instructions attached to the system itself must be observed. They must always be complete and easily legible.

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Safety SFC
2.
Technical standard The system or unit has been constructed in accordance with state-
of-the-art technology and the accepted safety regulations.
However, in the event of the system or unit being used by persons
who have not been adequately instructed, risks to life and limb of
such persons or third parties and damage to the system or unit
itself or to other property cannot be ruled out. Work not described
in this operating manual may only be performed by authorized
personnel.
Personnel The operator of the system must ensure that only authorized and
qualified specialized personnel are permitted to work with and on
the unit within their defined scope of authority. „Authorized
specialists“ are trained technicians employed by the operator, by
Evoqua, or, if applicable, the service partner. Only qualified
electricians may perform work on electrical components.
Spare parts / components Trouble-free operation of the system is only guaranteed if original
spare parts and components are used in precisely the combination
described in this operating manual. Failure to observe this
instruction may incur the risk of malfunction or damage to the
system.
Modifications and extensions Never attempt to perform any modifications, extensions or
conversions to the unit without the written approval of the
manufacturer! These could have an adverse affect on safety!
Electrical power During normal operation, the control unit must remain closed.
Before starting any assembly, inspection, maintenance, or repair
work, the system must be switched OFF using the emergency stop
switch and the switch must be secured against reactivation.
Connect all cables in accordance with the wiring diagram.
Waste disposal Ensure safe and environmentally-friendly disposal of agents and
replaced parts.
2.3 Warranty conditions
The following must be observed for compliance with warranty
conditions:
• Installation, commissioning by Evoqua technicians or
trained and authorized specialized personnel, e.g. of
contracted companies
• Intended use
• Observation of the operational parameters and settings.
• The unit may only be operated by trained personnel.

SFC Safety
2.
9
• An operating log book must be kept (only in the public
sector).
• Only approved calibration chemicals may be used
• The unit must not be exposed to frost.
• Maintenance work must be executed
• Use of original spare parts
If any of the above conditions are not met, the warranty is void.
2.4 Specific Operating Phases
Normal operation Never employ any working methods which could affect safety!
Only run the unit when the housing is closed!
Inspect the unit at least once daily for externally visible damage
and faults! Inform the responsible person/authority immediately of
any detected changes (including any changes in the operating
performance)!
In the event of malfunctions, always switch the unit off
immediately! Have malfunctions remedied immediately!
Installation and
maintenance work Always perform installation or maintenance work in accordance with this operating manual or the technical documentation for
installed unit components!
Secure the unit against activation during installation and
maintenance work!
Always retighten released screw connections!
Never use corrosive cleaning agents!
Use only a damp cloth to clean the unit.
Ensure safe disposal of agents and replaced parts in accordance
with environmental regulations!

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Safety SFC
2.
2.5 Notes on Special Dangers
Electrical power Only use original fuses with the prescribed current rating! In the
event of a fault in the electrical power supply, switch the unit off
immediately!
Only qualified electricians or trained personnel supervised by a
qualified electrician are permitted to perform any work on electrical
components in accordance with valid electro-technical regulations.
If stipulated, disconnect all parts of the unit from the power supply
before performing any inspection, maintenance or repair work.
Then first test the disconnected components to ensure they do not
carry any voltage.
Inspect/check the electrical system of the unit regularly. Remedy
any faults immediately!
Connect disconnected cables in accordance with the wiring
diagram!
Agents and
chemical substances When handling agents and chemical substances always observe the safety regulations valid for each product!
Always remove leaked agents immediately with a suitable binder
or wipe up with a cloth. Danger of slipping!
Always collect and dispose of agents or used cleaning material
separately and in accordance with valid national regulations!

SFC Description
3.
11
3. Description
3.1 Versions
There are two versions of the SFC.
They differ in the type and number of inputs and outputs that are
available and in terms of functionality.
Both versions are available either as control cabinet units or wall
units.
Version 1 (SFC with sensor measuring module)
This version supports all applications 1 – 3 (see 4.5 “Applications”)
• slot for 1 sensor module
•4 relays
• 2x mA input
• 1x feedback input
• 2x digital input
• 1x temperature input PT 1000
• 1x mA output
• 1x SD memory card receptacle
• 1x CAN interface
• 1x RS485 interface
• 1x RS232 interface for Gateway
• 1x interface for firmware updates
Version 2 = SFC SC
This version only supports application 3 (see 4.5 “Applications”)
without the possibility of recording measurements using the
sensor measuring module.
•2 relays
• 1 x mA input
• 1x feedback input
• 2x digital input
• 1x mA output
• 1x interface for firmware updates

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Description SFC
3.
3.2 Technical Data
3.2.1 Electronic module SFC
Housing
Electronics
Caution!
Do not use the device in measuring categories II, III and IV.
Dimensions (WxHxD) 185 x 265 x 145 mm
Weight approx. 2.5 kg
Protection type IP 66
Mains connection
100 – 240 V AC ± 10%, 50 – 60 Hz, 15 W, Fuse 1A time lag
250 V Type: 5 x 20 mm
24 V DC ± 20%, 15 W, Fuse 1 A time lag 250 V
Type: 5 x 20 mm
Insulation
Overvoltage category 2
Pollution degree 2
Measuring category I
Operating conditions
Ambient temperature 0 – 50 °C
Humidity < 80 %
Environment Indoor use
No direct sunlight
max. altitude 2000 m
Atmospheric pressure 75 – 106 kPa
Storage temperature -20 – +70 °C
Noise emission <45 dB

SFC Description
3.
13
Digital inputs
2x inputs for voltage-free contact (< 100 Ohm) power supply
via SFC (12 V)
DI 1: Sample water monitoring / freely selectable in menu
DI 2: Freely selectable in menu
Measurement inputs
1x temperature input PT 1000 (0°C – 50°C) with sensor error
display (not with Version 2)
1x feedback input
positioner position feedback
Potentiometer 1kOhm or 5kOhm, 0 – 1 V, 0 – 20 mA
(selectable via DIP switch)
1x measured value input (electrically isolated up to 50 V to
ground) for plug-in cards of the sensor measuring module (not
with Version 2):
• 3-electrode cell for chlorine, chlorine dioxide or
potassium permanganate
• Membrane sensors for total chlorine TC1/TC3, free
chlorine FC1/FC2, chlorine dioxide CD7, ozone OZ7
• pH value
• Redox voltage
• Fluoride
• Conductivity
•mA/V input
1x mA input for flow rate 0 – 20 mA/4 – 20 mA
In SFC units with a 24 V supply voltage this input is not
electrically isolated from the 24 V DC supply voltage.
1x mA input for external setpoint or dosing factor
0 – 20 mA/4 – 20 mA (not with Version 2)
In SFC units with a 24 V supply voltage this input is not
electrically isolated from the 24 V DC supply voltage.

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Description SFC
3.
Interfaces
Display and operating unit
Relay outputs
1x RS232 for firmware updates (not galvanically isolated)
1x RS485 (optional) (not with Version 2) for connection to:
• ChemWeb-Server
• OPC Server Data Access V2.0
• CMS Software 3.0
• SECO-S7
The RS485 interface is electrically isolated up to 50 V to ground.
1 x CAN interface to connect to CAN sensors
1x RS232 interface for Gateway module (not with Version 2)
1 x Operating panel with 9 keys
1 x Graphic display:
• Resolution 128 x 64 pixels
• white background illumination
4 relay outputs (with Version 1) or
2 relay outputs (with Version 2) (each with two-way switch)
Switching values 5 A, 250 V AC, 1250 VA max
5 A, 220 V DC, 150 W max
UL/CSA-rating 5 A, 1/6 HP 125, 250 V AC
5 A, 30 V DC, 30 W max
1 A, 30 V DC - 0.24 A, 125 V DC

SFC Description
3.
15
mA output
Memory card
DES measuring module
3-electrode cell
1x mA output (freely configurable):
• Output 0/4 – 20 mA
• Accuracy < 0.5% FS
• Load max. 500 Ohm
• Temperature drift max. 0.2% / 10°C
• Load monitoring
• Electrically isolated up to 50 V to earth
1x SD memory card slot for installing an SD memory card (not
with Version 2)
Sensor 3-electrode cell
Principle of operation Potentiostatic amperometry
Temperature drift max. 0.2% / 10k
Linearity error < 0,1 %
Calibration Pre-calibrated
Upot cell voltage 0 – +1000 mV
Upot accuracy ± 20 mV
Upot temperature drift 0.5% / 10K
Input signal -7 – 1000 µA
Temperature input PT 1000 (optional)
Measuring ranges 10, 70, 100, 200, 1000 µA
(depending on the type of the
DES module)

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Description SFC
3.
DES module
membrane sensors
pH measuring module
for pH value
mV measuring module
for Redox
Sensor Membrane covered 3-electrode
sensor
Principle of operation Potentiostatic amperometry
Temperature drift max. 0.2% / 10k
Linearity error < 0,1 %
Calibration Pre-calibrated
Input signal -7 – 1000 µA
Measuring ranges 70, 100, 200, 1000 µA
Sensor input pH single rod electrode
Temperature drift max. 0.2% / 10k
Linearity error < 0,1 %
Calibration Pre-calibrated
Input signal -1000 – +1000 mV
Input impedance 1013 Ohm
Sensor input Redox single rod electrode
Temperature drift max. 0.2% / 10k
Linearity error < 0,1 %
Calibration Pre-calibrated
Input signal -1000 – +1000 mV
Input impedance 1013 Ohm

SFC Description
3.
17
mS measuring module
for conductivity
mA/V measuring module
for analog input
F-measuring module
for fluoride
Sensor input LF325
Temperature measuring
range
0 – +50 °C
Temperature drift < 0,2 %
Calibration Pre-calibrated
Linearity error < 0,5 %
Measuring range 0,1 – 200 mS/cm
Sensor input mA signal or V signal
Temperature drift max. 0.2% / 10k
Linearity error < 0,1 %
Calibration Pre-calibrated
Measuring ranges 0/4 – 20 mA (scalable) or
0 – 10 V (scalable)
Sensor input Fluoride single rod electrode
Calibration Pre-calibrated
Measuring range 0.2 – 20.0 mg/l
Temperature drift max. 0.2% / 10k
Linearity error < 0,1 %

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Description SFC
3.
3.2.2 Flow block assembly DEPOLOX® 5
Housing
Multi sensor
Dimensions (WxHxD) 215 x 375 x 155 mm
Weight approx. 1.5 kg
Switching point 21 l/h +/- 3 l/h
Switching hysteresis 2 l/h
Temperature sensor PT 1000
Measured variables Free chlorine, chlorine dioxide,
ozone, potassium
permanganate
Measuring ranges 70, 100, 200, 1000 µA
Typical output signal approx. 20 µA/mg/l free chlorine
Measuring system Potentiostatic 3-electrode
system
Reference electrode Silver/Silver chloride/Potassium
chloride solution
Working electrode Platinum
Other materials PVC, PMMA, ABS, ECTFE,
PTFE, stainless steel, EPDM,
FKM, NBR
Cable length 650 mm
Electrolyte Potassium chloride solution, 3
mol
Zero point calibration by stopping flow rate or
dechlorinated sample water typ.
zero current approx. 1 µA
Response time T90: < 20 sec.
Temperature
compensation
0 – 50 °C
Storage temperature -10°C – +50°C (without
electrolyte)
Influence of the pH value HOCl curve, operating range
pH5.0–pH8.5

SFC Description
3.
19
Volumetric flow control
Connections
Cross-sensitivity other oxidation agent: copper-
based algaecide
Water quality swimming pool, potable,
industrial and process water
Sample water temperature max. +50 °C
Conductivity min. 200 µS/cm
Service life Life of the electrolytes in
operation approx. 6 months
Service life of electrodes in
operation approx. 5 years
(shortened by poor water quality,
e.g. sand, dirt)
The HOCI curve describes the influence of the pH value on the
DEPOLOX® 5.
Picture 1 HOCI curve
Flow rate approx. 33 l/h (controlled)
Control range 0.2 – 4.0 bar
Back pressure • non-pressurized version (free
drain)
• pressurized version 1.5 bar
Sample water PVC hose 6x3 mm or PE hose
6x1 mm
Thread connection G1/2“ or NPT 1/4“

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Description SFC
3.
3.2.3 VariaSens flow block assembly
Housing
Connections
Flow control valve
Sample water
Multi sensor
Dimensions (WxHxD) 215 x 375 x 155 mm
Weight approx. 1.5 kg
Sample water PVC hose 6 x 3 mm or PE hose
6 x 1 mm
Thread connection G1/2“ or NPT 1/4“
Flow rate approx. 33 l/h (controlled)
Control range 0.2 – 4.0 bar
Back pressure • non-pressurized version (free
drain)
• pressurized version 1.5 bar
Water quality swimming pool, potable,
industrial and process water
Sample water temperature max. +50 °C
Switching point 21 l/h +/- 3 l/h
Switching hysteresis 2 l/h
Temperature sensor PT 1000