Grundfos Conex DIA-2Q User manual

Conex®DIA-2Q
Instrument amplifier and controller
Installation and operating instructions
GRUNDFOS INSTRUCTIONS

English (GB)
2
English (GB) Installation and operating instructions
Original installation and operating instructions
CONTENTS
Page
1. Symbols used in this document
1. Symbols used in this document 2
2. A few words in advance 3
3. Instrument settings 4
4. General information 6
5. Applications 6
6. Safety 6
6.1 Obligations of the owner/operations
manager 6
6.2 Avoidance of danger 6
7. Identification 7
7.1 Nameplate 7
7.2 Type key, Conex®DIA-2Q controllers 8
7.3 Type key, Conex®DIA-2Q preassembled
systems 8
8. Technical data 10
8.1 Design/enclosure class 10
8.2 General data 10
8.3 Electronic data and functions 10
8.4 Measuring ranges 12
8.5 Dimensions 12
9. Installation 13
9.1 Transport and storage 13
9.2 Unpacking 13
9.3 Installation requirements 13
9.4 Installation in control panel 13
9.5 Installation of wall-mounted enclosure 14
10. Commissioning/electrical connections 15
10.1 Terminals 16
10.2 Power supply connection 18
10.3 Relay outputs 18
10.4 Current output 19
10.5 Connections of controller stop,
sample-water sensor and temperature
sensor 19
10.6 Connection of measuring cells 20
11. Operation 24
11.1 Control and display elements 24
11.2 Display elements during initial
commissioning 24
11.3 Software overview 26
11.4 Main menu 27
11.5 Setup 28
11.6 Selection, configuration and
parameterisation of the controller 34
11.7 "Alarm" menu 40
11.8 Checking the settings in the "service"
menu 42
11.9 Calibration 44
11.10 Manual operation 48
12. Fault finding 51
13. Maintenance 51
14. Disposal 51
Warning
Prior to installation, read these installation
and operating instructions. Installation and
operation must comply with local
regulations and accepted codes of good
practice.
Note
These complete installation and operating
instructions are also available on
www.Grundfos.com.
Warning
If these safety instructions are not
observed, it may result in personal injury.
Caution
If these safety instructions are not
observed, it may result in malfunction or
damage to the equipment.
Note
Notes or instructions that make the job
easier and ensure safe operation.

English (GB)
3
2. A few words in advance
The Conex®DIA-2Q is a multipurpose device
designed to carry out high-precision measurements
and controls of the following:
• a value from parameter group 1:
– chlorine, chlorine dioxide, ozone, hydrogen
peroxide or peracetic acid
• a value from parameter group 2:
– pH value, redox potential.
The integrated controller, the high-resolution
graphics display and the multilingual plain-text user
interface make complicated measuring and control
tasks in water chemistry much easier.
Just a few button inputs lead you to your goal. The
potentiostat helps save even more time, being
automatically matched to the various input variables.
The safety standard of the dosing process is raised
by the automatic open-circuit monitoring of the
current outputs.
Properties of the Conex®DIA-2Q measuring
amplifier and controller include the following:
• all control functions including PID and
continuous-action controls
• proportional control
• setpoint control
• combined setpoint control with external
disturbance variable feedforward
• manual or automatic temperature compensation
• logbook function: chronological recording of
calibration values with date and time
• user coding function as a means of protection
against access by unauthorised persons and for
system administration
• error message function for indication of
non-functioning sensors.

English (GB)
4
3. Instrument settings
Parameter 1
Setup Controller Alarm
Parameter Controller
Proportional Xp
%
Alarm
On:_
Off:_
Chlorine:_
Chlorine dioxide:_
Ozone:_
Peroxide:_
Peracetic acid:_
Proport. contrl.
Current input
Proport. variable
Off:_
0-20 mA:_
4- 20 mA:_
Others:_ ________
Reset time TN
(PI/PID control)
sec.
Alarm value 1
Switching point
Temp. meas.
Yes:_
No:_
Interpulse ctrl.:_
Pulse freq. ctrl:_
Cont. controller:_
Deriv. action Tv
(PID control)
sec.
Alarm value 1
Switching direction
Upward violation:_
Downward viol.:_
Temp. comp.
Yes:_
No:_
Setpoint contrl.
Combined contrl.
Off:_
Limit:_
Interpulse ctrl.:_
Pulse freq. ctrl:_
Cont. controller:_
Int.pulse period
(interpulse ctrl.)
sec.
Alarm value 2
Switching point
pH compensation
Yes:_
No:_
Limit contact
Downward viol.:_
Upward violation:_
Min. ON time
(interpulse ctrl.)
sec.
Alarm value 2
Switching direction
Upward violation:_
Downward viol.:_
Measuring ranges
mg/l (ppm)
Ctrl. direction
Downward control:_
Upward control:_
Max. frequency
(pulse freq. ctrl.)
n/min
Hysteresis
Current output 1
mA
Type of control
P:_
PI:_
PID:_
Setpoint
(limit contact) Alarm delay
sec.
Measuring cell
Current input
Disturbance variable
Off:_
0-20 mA:_
4- 20 mA:_
Others:_ ________
Constant load
%
Dos. time monit.
On:_
Off:_
Measuring cell type Max. dosing flow
%
Dos. time monit.
Max. dosing time
min
Cleaning motor
Monitoring on:_
Monitoring off:_
Limit
(limit contact)
Water sensor
On:_
Off:_
Hysteresis
(limit monitor)

English (GB)
5
Parameter 2
Setup Controller Alarm
Parameter Controller
Proportional Xp
%
Alarm
On:_
Off:_
pH:_
Redox:_
Proport. contrl.
Current input
Proport. variable
Off:_
0-20 mA:_
4- 20 mA:_
Others:_ _______
Reset time TN
(PI/PID control)
sec.
Alarm value 1
Switching point
Temp. meas.
Yes:_
No:_
Interpulse ctrl.:_
Pulse freq. ctrl:_
Cont. controller:_
Deriv. action TV
(PID control)
sec.
Alarm value 1
Switching direction
Upward violation:_
Downward viol.:_
Temp. comp.
Yes:_
No:_
Setpoint contrl.
Combined contrl.
Off:_
Limit:_
Interpulse ctrl.:_
Pulse freq. ctrl:_
Cont. controller:_
Int.pulse period
(interpulse ctrl)
sec.
Alarm value 2
Switching point
pH compensation
Yes:_
No:_
Limit contact
Downward viol.:_
Upward violation:_
Min. ON time
(interpulse ctrl)
sec.
Alarm value 2
Switching direction
Upward violation:_
Downward viol.:_
Measuring ranges
mg/I (ppm)
Ctrl. direction
Downward control:_
Upward control:_
Max. frequency
(pulse freq. ctrl)
n/min
Hysteresis
Current output 1
mA
Type of control
P:_
PI:_
PID:_
Setpoint
(limit contact)
Alarm delay
sec.
Current input
Disturbance variable
Off:_
0-20 mA:_
4- 20 mA:_
Others:_ _______
Constant load
%
Dos. time monit.
On:_
Off:_
Max. dosing flow
%
Dos. time monit.
Max. dosing time
min
Limit
(limit contact)
Hysteresis
(limit contact)

English (GB)
6
4. General information
These installation and operating instructions contain
all information important for users of the Conex®
DIA-2Q:
• technical data
• instructions on commissioning, use and
maintenance
• safety information.
Should you require further information or should you
encounter problems that are not handled in sufficient
depth in this manual, please contact Grundfos. We
shall be pleased to support you with our
comprehensive know-how in the fields of measuring
and control technology as well as water treatment.
We always welcome suggestions on how to optimise
our installation and operating instructions to satisfy
our customers.
5. Applications
The Conex®DIA-2Q instrument amplifier and
controller is suitable for measuring chlorine (Cl2),
chlorine dioxide (ClO2), ozone (O3), hydrogen
peroxide (H2O2), peracetic acid, pH or redox
potential and for controlling these variables using
appropriate actuators within the applications
described in this manual.
6. Safety
6.1 Obligations of the owner/operations
manager
The owner/operations manager must ensure that
persons working with the Conex®DIA-2Q
instrument amplifier and controller fulfil these
requirements:
• They are acquainted with the regulations
concerning working safety and accident
prevention.
• They have been trained in use of the device.
• They have read and understood the warning
information and handling symbols.
The owner/operations manager is also responsible
for ensuring that this manual is kept in the immediate
vicinity of the device and is always available for the
operating personnel.
6.2 Avoidance of danger
Warning
Other applications are not approved and
not permitted. Grundfos cannot be held
liable for any damage resulting from
incorrect use.
Warning
Installation and connection of the device
and the associated supplementary
components must only be carried out by
authorised personnel!
The local safety regulations must be
observed!
Warning
Switch off the power supply before
connecting the power supply cable and
relay contacts!
Do not dismantle the device!
Maintenance and repair must only be
carried out by authorised personnel!
Caution
The mounting location must be selected so
that the housing is not subjected to
mechanical loading.
Check that all settings are correct before
starting up the device!

English (GB)
7
7. Identification
7.1 Nameplate
Fig. 1 Nameplate, Conex®DIA-2Q
TM04 0455 0708
Pos. Description
1 Type designation
2 Model
3 Product name
4 Voltage [V]
5 Frequency [Hz]
6 Product number
7 Country of origin
8 Year and week of production
9 Marks of approval, CE mark, etc.
10 Power consumption [VA]
11 Enclosure class
12 Serial number
DIA-2Q-A D2-X-AU-PCX-Q5-T, W-G
314-935-18008
S/N: 07/33675
Conex DIA-2Q, pre-assembled
230/240V 50/60Hz, 15VA IP 65
95700433P1107190733675
1
2
3
4
5
810
9
11
12
6
7

English (GB)
8
7.2 Type key, Conex® DIA-2Q controllers
Type key example: DIA-2Q, 1-D/HP/PA 2-P/R/F, Q-W-G
7.3 Type key, Conex® DIA-2Q preassembled systems
Type key example: DIA-2Q-A, D2-X-AU-PCX-QS-T, W-G
Example: DIA -2Q 1-D/HP/PA 2-P/R/F Q -W -G
Measuring amplifier and controller
DIA-2Q Dosing Instrumentation Advanced with 2 inputs + flow
measurement
Input parameter 1
D Chlorine (Cl2), chlorine dioxide (ClO2) or ozone (O3)
HP Hydrogen peroxide (H2O2)
PA Peracetic acid (PAA)
Input parameter 2
PpH
R Redox (ORP)
Variant
QFlowcompensation
Mounting
W Wall-mounted
P Panel-mounted
Voltage
G 1 x 230 V, 50/60 Hz
H 1 x 120 V, 50/60 Hz
I24VDC
Example: DIA -2Q -A D2 -X -AU -PCX -QS -T W -G
Units for measurement and control
DIA-2Q Dosing Instrumentation Advanced, with 2 inputs,
with flow measurement
Assembly
A Preassembled
Cell type
D1 Pressure-proof, with cleaning motor
D11 Pressure-proof, with cleaning motor
D2 Pressure-proof, with hydro-mechanical cleaning
D12 Pressure-proof, with hydro-mechanical cleaning
D3 Pressureless, with hydro-mechanical cleaning
D13 Pressureless, with hydro-mechanical cleaning
D4 For total chlorine measurement
D5 For free chlorine measurement with buffer dosing
P/R pH or redox (ORP) only
P With pressure retention valve
X Without pressure retention valve
(to be continued)

English (GB)
9
Example: DIA -2Q -A D2 -X -AU -PCX -QS -T W -G
Disinfection electrodes
AU Gold
PT Platinum
X No disinfection measuring
Other electrodes
PCB pH, ceramic diaphragm, incl. buffer solution
PTB pH, PTFE diaphragm, incl. buffer solution
PKB pH, KCl filling, incl. buffer solution
PGB pH, gel filling incl. buffer solution
PCX pH, ceramic diaphragm, excl. buffer solution
PTX pH, PTFE diaphragm, excl. buffer solution
PKX pH, KCL filling, excl. buffer solution
PGX pH, gel filling, excl. buffer solution
RCB Redox (ORP), ceramic diaphragm, incl. buffer solution
RTB Redox (ORP), PTFE diaphragm, incl. buffer solution
RCX Redox (ORP), ceramic diaphragm, excl. buffer solution
RTX Redox (ORP), PTFE diaphragm, excl. buffer solution
PA Peracetic acid
HP Hydrogen peroxide
X No electrode
Flow sensor
QS Flow sensor integrated
X No flow sensor
Temperature sensor
T With Pt100
X No temperature sensor
Mounting of controller
W Wall-mounted
P Panel-mounted
Voltage
G 1 x 230 V, 50/60 Hz
H 1 x 120 V, 50/60 Hz
I24VDC

English (GB)
10
8. Technical data
8.1 Design/enclosure class
8.2 General data
8.3 Electronic data and functions
8.3.1 Electronics
8.3.2 Functions of the instrument amplifier
Wall-mounted
enclosure
(distance from
sensors up to three
metres)
IP65
Control panel
enclosure
including separate
potentiostat
IP54 (front)/
IP65 (sensor interface)
(distance from sensor
interface up to 100 metres,
distance from sensor
interface to sensors up to
three metres)
Input power Approximately 15 VA
Permissible
ambient
temperature
0 °C to +45 °C
Permissible
storage
temperature
-20 °C to +65 °C
Maximum relative
humidity 90 % (non-condensing)
Weight 1.5 kg
Enclosure
Plastic (control panel
enclosure: noryl,
wall-mounted
enclosure: ABS)
Power supply
versions
• 230/240 V (50/60 Hz)
(standard model)
• 115/120 V (50/60 Hz)
• 24 VDC
Electronics 16-bit microprocessor
Display High-resolution graphics LCD
with background light
Potential-free relay
outputs
1 alarm relay, 2 controller
relays (250 V/6 A, maximum
550 VA)
Signal inputs
Controller stop; proportional
value, disturbance variable
0/4 to 20 mA; water sensor
Signal outputs
4 analog outputs 0/4 to 20
mA, freely adjustable,
maximum load 500 Ω
Freely adjustable
analog outputs for
measured values
• Parameter group 1:
chlorine, chlorine dioxide,
ozone, peroxide, peracetic
acid
• Parameter group 2: pH,
redox
• For temperature or
continuous control (0/4 to
20 mA) of the parameters
from group 2 (pH, redox)
• For continuous control
(0/4 to 20 mA) of the
parameters from group 1
(chlorine, chlorine dioxide,
ozone, peroxide, peracetic
acid)
Display mode
Measured-value display:
measured value with its unit,
temperature display: in °C or
°F
Temperature
compensation
Manual or automatic with
Pt100
Calibration
Manual calibration, or with
automatic recognition of
buffer solution

English (GB)
11
8.3.3 Proportional controller functions 8.3.4 Setpoint controller functions
8.3.5 Combined controller functions
Proportional value
input
0-20 mA/4-20 mA or other
value (freely adjustable
between 0 mA and 20 mA)
Controller output Proportional or inversely
proportional
Controller output
Interpulse output, pulse
frequency output, continuous
controller output
Interpulse period 1 to 100 seconds (only with
interpulse controller)
Minimum ON time
Tmin
0.1 to 10.0 seconds (only
with interpulse controller)
Maximum
frequency
1-180 pulses per minute
(only with pulse frequency
controller)
Basic load 0 to 100 % of dosing rate
Maximum dosing
rate
0 to 100 % of dosing rate
(value for maximum dosing
rate < basic load is
possible!)
Dosing factor D.F. 0.1 to 10 (weighting of
proportional value)
Controller stop Adjustable to NC or NO
Controller output
Limit monitor, interpulse
controller (P, PI, PID), pulse
frequency controller (P, PI,
PID), continuous controller (P,
PI, PID)
Limit
0 to 100 % of measuring
range, adjustable in the unit
of the measured value (only
with limit monitor)
Hysteresis
0 to 50 % of full-scale value,
adjustable in the unit of the
measured value (only with
limit monitor)
Setpoint input
0 to 100 % of measuring
range, adjustable in the unit
of the measured value
Proportional band
Xp0.1 to 3000.0 %
Reset time Tn
1 to 3000 seconds, resolution
1 second (only with PI, PID
controllers)
Derivative action
time Tv
0 to 1000 seconds, resolution
1 second (only with PID
controller)
Interpulse period 1 to 100 seconds (only with
interpulse controller)
Minimum ON time
Tmin
0.1 to 10.0 seconds (only with
interpulse controller)
Maximum
frequency
1 to 180 pulses per minute
(only with pulse frequency
controller)
Basic load 0 to 50 % of dosing rate
Maximum dosing
rate
Value (basic load + 1) to 100
% of dosing rate
Control direction Adjustable to upward or
downward control
Controller stop Adjustable to NC or NO
Minimum ON time
Tmin
0.1 to 10.0 seconds (only with
interpulse controller)
Maximum
frequency
1 to 180 pulses per minute
(only with pulse frequency
controller)
Basic load 0 to 50 %
Maximum dosing
rate
Value (basic load + 1) to 100
% of dosing rate
Control direction Adjustable to upward or
downward control
Controller stop Adjustable to NC or NO
Disturbance
variable input
0 to 20 mA/4 to 20 mA or
other (freely adjustable
between 0 and 20 mA)
Dosing factor D.F. 0.1 to 10.0 (weighting of
disturbance variable)

English (GB)
12
8.4 Measuring ranges
8.5 Dimensions
Fig. 2 Wall-mounted enclosure Conex®DIA-2Q
Fig. 3 Control panel enclosure Conex®DIA-2Q
CI2CIO2O3H2O2
Peracetic
acid pH Redox (ORP) Pt100
mg/l mg/l mg/l mg/l mg/l pH mV °C
0.00 - 0.50 0.00 - 0.50 0.00 - 0.50 0-100 0-100 0.00 - 14.00 - 1500 to + 1500 -5 to +120
0.00 - 1.00 0.00 - 1.00 0.00 - 1.00 0-500 0-500 2.00 - 12.00 0-1000
0.00 - 2.00 0.00 - 2.00 0.00 - 2.00 0-1000 0-1000 5.00 - 9.00
0.00 - 5.00 0.00 - 5.00 0.00 - 5.00 0-2000 0-2000
0.00 - 10.00 0.00 - 10.0
0.00-20.00
Note
The measuring ranges are also freely
adjustable (within the above-mentioned
range limits).
TM03 6687 4506TM03 6688 4506
59
125
84
59.5
184.5
212
198
10
145 27
110
180
Ø 4.5
90
96
96
166
90
158
90
18

English (GB)
13
9. Installation
9.1 Transport and storage
• Transport the device carefully, do not drop!
• Store at dry and cool location.
9.2 Unpacking
• Check the device for damage.
Install as soon as possible after unpacking.
• Do not install or connect damaged devices!
9.3 Installation requirements
• Dry room
• Room temperature: 0 °C to 45 °C
• Vibration-free location.
9.4 Installation in control panel
Fig. 4 Control panel enclosure Conex®DIA-2Q
Fig. 5 Sensor interface
1. Make an opening of 92 + 0.8 mm x 92 + 0.8 mm
in the control panel.
2. Slip on the supplied gasket.
3. Insert the Conex®DIA-2Q into the opening from
the front.
1. Hook the clamps into the tightening cones on the
sides at the top and bottom.
2. Secure the device from the rear using a
screwdriver.
3. Install a separate sensor interface near the
sensors (maximum distance of three metres).
Note
Retain the packing material or dispose of it
according to local regulations.
Caution
If you do not observe the installation
requirements, the device may be
damaged!
The measurements may not be correct!
TM03 6689 4506TM03 6690 4506
Caution
Do not damage the gasket!
The gasket must be fitted exactly!
92+0.8
92
+0.8
> 20
> 20

English (GB)
14
9.5 Installation of wall-mounted enclosure
Fig. 6 Wall-mounted enclosure Conex®
DIA-2Q
1. Drill three holes (8) as shown in the diagram,
and insert the supplied dowels.
2. Screw the screw (A) into the top centre dowel
until it projects by approximately 1 cm. See fig. 7.
3. Loosen the fastening screws of the front panel,
and remove the front panel.
4. Hang the instrument onto the screw (A).
5. Tighten the instrument with the two screws (B).
6. Mount the front panel of the enclosure.
Fig. 7 Mounting drawing
Warning
Switch off the power supply before
installing!
Enclosure class IP65 is only guaranteed if
the terminal cover is correctly sealed, if the
front panel of the terminal enclosure is
closed and the appropriate cable glands or
dummy caps fitted.
Caution
Do not damage the terminal cover gasket!
The terminal cover gasket must fit exactly!
TM03 6691 4506
198
145 27
10.5
TM03 6692 4506
B
B
A

English (GB)
15
10. Commissioning/electrical connections
1. Remove the terminal cover on the front of the
device.
2. Use the appropriate cable feedthroughs and
tighten the screws carefully.
3. Connect the cables used to the terminals
according to the Conex®DIA-2Q terminal
assignment.
4. Close the terminal cover again with correctly
positioned gasket.
Warning
Switch off the power supply before
installing!
Enclosure class IP65 is only guaranteed
with the front panel of the terminals
enclosure closed and with appropriate
cable glands or dummy caps.
Warning
Switch off the power supply before
connecting the power supply cable and the
relay contacts! For safety reasons, the
protective conductor must be connected
correctly!
Observe the local safety regulations!
Protect the cable connections and plugs
against corrosion and humidity.
Caution
Before connecting the power supply cable,
check that the supply voltage specified on
the nameplate corresponds to the local
conditions!
An incorrect supply voltage may destroy
the device!
To guarantee electromagnetic compatibility
(EMC), the input and current output cables
must be screened.
Connect the screening to the screen
ground on one side.
Refer to the wiring diagram! Route the
input, current output and power supply
cables in separate cable channels.
Caution
Enclosure class IP65 is only guaranteed if
the terminal cover is correctly sealed! Do
not damage the gasket on the terminal
cover!
The gasket on the terminal cover must be
positioned precisely!
Do not damage the gasket!
Note
Unused terminals must remain open.

English (GB)
16
10.1 Terminals
10.1.1 Wall-mounted enclosure Conex®DIA-2Q
Fig. 8 Terminals of wall-mounted enclosure
TM03 6693 4506
15 17 19 21 23 25 27 29 31 33 35
3634323028262422201816
15 17 19 21 23 25 27 29 31 33 35
3634323028
262422201816
37 38 39 40 41 42
37 = 38 =M
15 17 19 21 23 25 27 29 31 33 35
3634323028262422201816
PAA H
2
O
2
15 (wh)
16 (br)
17 - 22 23 - 30 32,34,36
810
79
12 N.C.
N.O .
11 13
12 14
21/22 = Pt 100
19 = + H
2
O,20 = – H
2
O
17/18 =
1
2
3
4
Cl
2
,ClO
2
,O
3
,
H
2
O
2
,PAA
T /
+–
mA
pH, mV, F
–
mA
mA
mA
33/35
mA
mA
39 =B/R
40 =G/C
mA
+–
+–
+–
+–
41/42 =
+/–
mV
–
pH
F
14
14
P1
P2
P2
P1
1 3 5
2 4 6
1 3 5
2 4 6
+ -
+ -
115/120 V
230/240 V
24 V/DC
NLPE
NLPE
Cells / electrodes
External input
Outputs
Sensors
Cells
Alarm
Relays
Sensors
(water)
Controller stop
Outputs
External input
24 V/DC
115/120 V
230/240 V
15 (white) 16 (brown)

English (GB)
17
10.1.2 Control panel enclosure Conex®DIA-2Q
Fig. 9 Terminals of control panel enclosure
TM03 6694 4506
2/1 2/2 2/3 2/4
2 /1, 2/2
=
5/1 - 5/5
2/3 (+), 2/4 (–)
=
H
2
O
+–
M B/R G/C Pt 100
3/1 - 3/4
pH, mV, F –
Cl
2
, ClO
2
,
O
3
,PAA,
H
2
O
2
pH, mV, F –
3/1 3/2 3/3 3/4 4/1 4/2 4/3 4/4
7/1 7/2 7/3 N.C.
N.O.
1/1 (br), 1/2 (wh)
PAA H
2
O
2
6/1 6/2
6/3
6/4
1
2
A 1/1 (br) B 1/2 (wh)
PAA
H
2
O
2
A 2 /3 (+) B 2 /4 (-)
1/11 1/13 4/1
1/12 1/14
4/3
4/2 4/4
3/1 3/3
3/2 3/4 B
A
1/11 -1/14
Pt 100
4/1 - 4/4
Conex DIA-2Q
5/1
5/2
5/3
5/4
5/5
5/1 5/2 5/3 5/4 5/5
1
2
3
4
T
mA
Cl
2
, ClO
2
,
O
3
,H
2
O
2
,
PAA
pH, mV, F –
mA
+
–
5/1 - 5/5
41
1/1 1/2 1/3 1/4 1/5 1/6 1/7 1/8 1/9 1/10 1/11 1/12 1/13 1/14
8/1 8/2 8/3
PE
N
L
8/1
8/2
8/3
-
+
115/120 V
230/240 V
24 V/DC
H
2
O
Outputs
External input
Sensor interface
Cells / electrodes
Cells Electrodes
Jumper
DIP
off on
Controller stop
(water)
Relays
Alarm
Connection to Conex®DIA-2Q
Cells
(water)
Cells:
115/120 V
230/240 V
24 V/DC
1/1 (brown), 1/2 (white)
1/1 (brown)
1/2 (white)

English (GB)
18
Legend of terminals
Control panel enclosure Conex®DIA-2Q
•Conex®DIA-2Q: for installation in the control
panel.
• Sensor interface: for installation near the
sensors.
Use the following cable to connect the sensor
interface to the Conex®DIA-2Q: shielded cable, 4 x
0.5 mm2.
10.2 Power supply connection
1. Control panel enclosure: Plug the plug strip into
the corresponding terminal strip at the rear side
of the device. Ensure correct orientation.
2. Connect the protective earth conductor (PE) to
terminal 5 (wall-mounted enclosure) or terminal
8/1 (control panel enclosure).
3. Connect the neutral conductor (N) (or the –
conductor with 24 V version) to terminal 3
(wall-mounted enclosure) or terminal 8/2 (control
panel enclosure).
4. Connect phase (L1) (or the + conductor with 24 V
version) to terminal 1 (wall-mounted enclosure)
or 8/3 (control panel enclosure).
Switch the device on and off by switching the power
supply on and off accordingly. The device itself is not
equipped with a separate on/off switch.
10.3 Relay outputs
With inductive loads (also relays and contactors),
interference suppression is necessary. If this is not
possible, protect the relay contacts using a
suppressor circuit as described below.
• With AC voltage:
• With DC voltage: Connect the free-wheeling
diode in parallel to relay or contactor.
Fig. 10 Suppressor circuit, DC/AC
Pos. Description
Relays Relay 1 + 2
Alarm
Alarm relay
– N.O.: normally open
– N.C.: normally closed
Pt100 Temperature sensor
H2O Water sensor
Stop Controller stop
(NO or NC selectable)
Outputs Current outputs [mA]
1
Cl2(chlorine), ClO2(chlorine
dioxide), O3(ozone), H2O2
(hydrogen peroxide) or PAA
(peracetic acid)
2 pH, mV (redox)
3T/P2: temperature/continuous
controller parameter 2
4P1: output of continuous controller
parameter 1
Inputs External inputs [mA]
Electrodes Measuring cells, electrodes and
single-rod measuring chains
M Measuring electrode
B/R Reference electrode
G/C Counter electrode
Earth
mV Redox electrode
screen
Note
The connection of the relay outputs
depends on the application and the final
control elements used. Therefore the
connections described below should only
be considered as guidelines.
Current up to Capacitor C Resistor R
60 mA 10 nF, 275 V 390 Ω, 2 W
70 mA 47 nF, 275 V 22 Ω, 2 W
150 mA 100 nF, 275 V 47 Ω, 2 W
1.0 A 220 nF, 275 V 47 Ω, 2 W
Caution
Provide the relay outputs with a
corresponding backup fuse!
TM03 7209 2813
+
-
DC
R
C
AC

English (GB)
19
10.4 Current output
The current output can be set to one of the two
standard ranges "0-20 mA" or "4-20 mA", or it can be
freely adjusted.
• Connect the screen to earth (PE) at one end.
Output 1: chlorine, chlorine dioxide, ozone,
hydrogen peroxide or peracetic acid (parameter
1)
This current output shows the displayed measured
value as an analog current signal.
Use of current signal for measured values:
• as input signal for another indicator
• as input signal for an external controller.
1. Connect the + conductor to terminal 23
(wall-mounted enclosure) or terminal 1/3 (control
panel enclosure).
2. Connect the - conductor to terminal 24
(wall-mounted enclosure) or terminal 1/4 (control
panel enclosure).
Output 2: pH, redox (parameter 2)
This current output shows the displayed measured
value as an analog current signal.
Use of current signal for measured values:
• as input signal for another indicator
• as input signal for an external controller.
1. Connect the + conductor to terminal 25
(wall-mounted enclosure) or terminal 1/5 (control
panel enclosure).
2. Connect the - conductor to terminal 26
(wall-mounted enclosure) or terminal 1/4 (control
panel enclosure).
Output 3: continuous controller parameter 2 (or
temperature)
Shows the calculated actuating variable signal of the
controller as an analog current signal.
Use of actuating variable signal:
• as input signal for a final control element with
current input or temperature output:
Shows the temperature measured by the optional
temperature sensor as an analog current signal.
Use of temperature current signal:
• as input signal for another indicator.
1. Connect the + conductor to terminal 27
(wall-mounted enclosure) or terminal 1/6 (control
panel enclosure).
2. Connect the - conductor to terminal 28
(wall-mounted enclosure) to terminal 1/7 (control
panel enclosure).
Output 4: continuous control parameter 1
This current output shows the calculated actuating
variable signal as an analog current signal.
Use of actuating variable signal:
• as input signal for a continuous final control
element.
1. Connect the + conductor to terminal 29
(wall-mounted enclosure) or terminal 1/8 (control
panel enclosure).
2. Connect the - conductor to terminal 30
(wall-mounted enclosure) or terminal 1/7 (control
panel enclosure).
10.5 Connections of controller stop,
sample-water sensor and temperature
sensor
Connecting the controller stop
1. Connect the + conductor to terminal 17
(wall-mounted enclosure) or terminal 2/1 (control
panel enclosure).
2. Connect the - conductor to terminal 18
(wall-mounted enclosure) or terminal 2/2 (control
panel enclosure).
Connecting the sample-water sensor
Cable colours and marking: See connections of
measuring-cell types
AQC-D1/-D11/AQC-D2/-D12/AQC-D3/-D13.
1. Connect the + conductor to terminal 19
(wall-mounted enclosure) or terminal 2/3 (control
panel enclosure).
2. Connect the - conductor to terminal 20
(wall-mounted enclosure) or terminal 2/4 (control
panel enclosure).
Connecting the Pt100 temperature sensor
1. Connect the + conductor to terminal 21
(wall-mounted enclosure) or terminal 1/11
(control panel enclosure).
2. Connect the - conductor to terminal 22
(wall-mounted enclosure) or terminal 1/12
(control panel enclosure).
Caution
Make sure that the polarity of the current
output is correct!
Maximum load: 500 Ω.
Note
When using measuring cell AQC-D2/-D12,
the water sensor must always be
connected and activated!

English (GB)
20
10.6 Connection of measuring cells
Jumper setting
• All cell types: position 1 (standard).
Fig. 11 Jumper setting
10.6.1 Connection of wall-mounted enclosure
Conex®DIA-2Q
Fig. 12 Connection to measuring cells
AQC-D1/AQC-D2/AQC-D3
Fig. 13 Connection to measuring cell
AQC-D11
Fig. 14 Connection to measuring cell
AQC-D12
Fig. 15 Connection to measuring cell
AQC-D13
Fig. 16 Connection to measuring cells PAA
(peracetic acid)/HP (peroxide)
TM03 6696 4506
TM03 5872 4112TM04 8642 4112
1
2
2
1:
Standard
7
5
1
37 38 39 40 41 42
6
12
4
1
15 17 19 21 23 25 27 29 31 33 35
3634323028262422201816
9, 10, 11
8
2
3
4
21
19
2220
4
12
11
11
38 40
39
98
10
TM04 8643 4112TM04 8644 4112TM03 6966 4112
7
10
9
1
6
2
37 38 39 40
8
21
19
2220
4
12
11
11
7
10
9
1
6
2
37 38 39 40
8
21
19
2220
2
12
11
COM
11
1
NC
12
15 17 19 21 23 25 27 29 31 33 35
3634323028262422201816
37 38 39 40 41 42
21
14 15