Lutz Jesco TOPAX L User manual

Dosing
Conveying
Control
Liquids
Gases
Systems
© Lutz-Jesco GmbH 2023
BA-40750-02-V01
Single-Channel Controller
Operating Instructions
Read the operating instructions!
The user is liable for improper installation and operation.
Translation of the original instructions
TOPAX®L

Table of Contents 3
© Lutz-Jesco GmbH 2023
Subject to technical changes.
230929
BA-40750-02-V01
Single-Channel Controller TOPAX®L Operating Instructions
Table of Contents
1 Notes for the Reader ..........................................................4
1.1 General Non-Discrimination .....................................................4
1.2 Explanation of Signal Words .....................................................4
1.3 Explanation of Warning Signs ...................................................4
1.4 Identification of Warnings.........................................................4
1.5 Identification of Action Instructions...........................................4
2 Safety .................................................................................5
2.1 General Warnings.....................................................................5
2.2 Hazards Due to Non-Compliance with the Safety Instructions....5
2.3 Working in a Safety-Conscious Manner.....................................5
2.4 Personnel Qualification ............................................................5
2.5 Electrical Safety.......................................................................6
3 Intended Use ......................................................................7
3.1 Notes on Product Warranty.......................................................7
3.2 Intended Purpose.....................................................................7
3.3 Foreseeable Misuse .................................................................7
4 Product Description ...........................................................8
4.1 Scope of Delivery .....................................................................8
4.2 Functions of the Device............................................................8
4.3 Main Features..........................................................................8
4.4 Control Panel ...........................................................................8
4.5 Standard View..........................................................................8
4.6 Rating Plate .............................................................................9
5 Technical Data..................................................................10
5.1 Measurement Specifications..................................................10
5.2 Mechanical Specifications......................................................10
5.3 Environmental Conditions ......................................................10
5.4 Electrical Specifications .........................................................11
6 Dimensions ......................................................................12
6.1 Outer Dimensions ..................................................................12
6.2 Drillhole Dimensions ..............................................................12
7 Installation .......................................................................13
7.1 Principles ..............................................................................13
7.2 Mounting the Device on the Wall.............................................13
7.3 Connecting the Power Supply.................................................13
7.4 Installation Recommendations ...............................................13
7.5 Terminal Block .......................................................................14
8 Start-Up............................................................................ 22
8.1 Displaying Measured Values and Outputs ...............................22
8.2 Displaying the Menu ..............................................................22
9 Calibration........................................................................23
9.1 Calibrating a pH and Redox Measurement (1A)........................23
9.2 Calibrating a Conductivity Measurement (1A)..........................24
9.3 Calibrating an mA Input (1A)...................................................24
9.4 Calibrating an Amperometric Measuring Cell (1A) ...................26
9.5 Calibrating the Temperature (1B) ............................................27
10 Setup ................................................................................28
10.1 General Settings (2A) ...........................................................28
10.2 Setting the Measured Value (2B)...........................................29
10.3 Temperature Measurement (2C) ...........................................32
11 Output...............................................................................33
11.1 Relay Output (3A) .................................................................33
11.2 Current Output (3B)..............................................................34
11.3 Alarm Settings (3C) ..............................................................35
12 Archive .............................................................................36
12.1 Data Logger (4A)..................................................................36
12.2 Alarms (4B)..........................................................................36
13 Manual Control................................................................. 37
14 WiFi...................................................................................38
15 Using the Web Application...............................................39
15.1 Connecting to the Web Application........................................39
15.2 Dashboard...........................................................................40
15.3 Statistics .............................................................................41
15.4 Actions ................................................................................42
15.5 Settings...............................................................................43
15.6 Network...............................................................................43
15.7 Software Update ..................................................................43
16 Alarm Table ......................................................................44
17 Troubleshooting ............................................................... 46
17.1 Resetting the Device to the Default Parameters.....................46
17.2 General Troubleshooting.......................................................46
18 Modbus Profile.................................................................48
18.1 Alarm Status Register...........................................................48
18.2 Output Register....................................................................49
18.3 Type of Input Module ............................................................50
18.4 Input Measurement (Temperature) .......................................50
18.5 Input Measurement (pH/Redox) ............................................50
18.6 Input Measurement (Conductivity) ........................................52
18.7 Input Measurement (mA Input) .............................................54
18.8 Configuration Relay 1 Output................................................56
18.9 Configuration Relay 2 Output................................................57
18.10 Configuration Relay 3 Output..............................................59
18.11 Configuration Relay 4 Output..............................................62
18.12 Configuration SSR1 Output.................................................64
18.13 Configuration SSR2 Output.................................................65
18.14 Configuration mA1 Output..................................................67
18.15 Configuration mA2 Output..................................................70
19 Glossary ...........................................................................74
20 EC Declaration of Conformity...........................................75
21 Warranty Claim ................................................................76

Notes for the Reader
4© Lutz-Jesco GmbH 2023
BA-40750-02-V01
Single-Channel Controller TOPAX®L Operating Instructions
1 Notes for the Reader
These operating instructions contain information and instructions for the
safe and designated operation of the TOPAX®L single-channel controller.
Observe the following principles:
nRead the entire operating instructions prior to starting-up the device.
nEnsure that everyone who works with or on the device has read the
operating instructions and follows them.
nMaintain the operating instructions throughout the service life of the
device.
nPass the operating instructions on to any subsequent owner of the de-
vice.
nBefore using the device, ensure that all safety requirements have
been met.
nThe device must not be powered on or connected to other devices un-
til all of the safety conditions have been met.
1.1 General Non-Discrimination
These operating instructions use only the masculine gender in cases in
which the rules of grammar would allow for gender allocation. This ap-
proach serves the purpose of legibility. Readers of all genders are always
addressed equally.
1.2 Explanation of Signal Words
Different signal words in combination with warning signs are used in
these operating instructions. Signal words illustrate the gravity of possi-
ble injuries if the risk is ignored:
Signal word Meaning
DANGER Refers to imminent danger. Ignoring this sign may
lead to death or the most serious injuries.
WARNING
Refers to a potentially hazardous situation.
Failure to follow this instruction may lead to death
or severe injuries.
CAUTION
Refers to a potentially hazardous situation.
Failure to follow this instruction may lead to
minor injury or damage to property.
PLEASE NOTE Refers to a danger which, if ignored, may lead to
risk to the machine and its function.
Tab. 1: Explanation of Signal Words
1.3 Explanation of Warning Signs
Warning signs represent the type and source of a danger:
Warning sign Type of danger
General danger
Danger from electrical voltage
Tab. 2: Explanation of Warning Signs
1.4 Identification of Warnings
Warnings are intended to help you recognise risks and avoid negative
consequences.
This is how warnings are identified:
Warning sign SIGNAL WORD
Description of danger.
Consequences if ignored.
ð
The arrow signals a safety precaution to be taken to eliminate the
danger.
1.5 Identification of Action Instructions
This is how pre-conditions for action are identified:
ü
Pre-condition for action which must be met before taking action.
@A resource such as a tool or auxiliary materials required to perform
the operating instructions.
This is how instructions for action are identified:
èSeparate step with no follow-up action.
1. First step in a series of steps.
2. Second step in a series of steps.
4Result of the above action.
ü
Action completed, aim achieved.

Safety 5
© Lutz-Jesco GmbH 2023
Subject to technical changes.
230929
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Single-Channel Controller TOPAX®L Operating Instructions
2 Safety
2.1 General Warnings
The following warnings are intended to help you eliminate the dangers
that can arise while handling the device. Risk prevention measures al-
ways apply regardless of any specific action.
Safety instructions warning against risks arising from specific activities
or situations can be found in the respective sub-chapters.
DANGER
Mortal danger from electric shock!
Wrongly connected or located cables or damaged ones can cause inju-
ries.
ð
Replace damaged cables without delay.
ð
Do not use extension cables.
ð
Do not bury cables.
ð
Fix all cables to prevent them from being damaged.
WARNING
Increased risk of accidents due to insufficient qualifica-
tion of personnel!
The device may only be installed, operated and maintained by person-
nel with sufficient qualifications. Insufficient qualification will increase
the risk of accidents.
ð
Ensure that all action is taken only by personnel with sufficient and
corresponding qualifications.
ð
Prevent access to the system for unauthorised persons.
PLEASE NOTE
Do not dispose of the device in the domestic waste!
Do not dispose of electric devices via the domestic waste.
ð
The device and its packaging must be disposed of in accordance
with locally-valid laws and regulations.
ð
Dispose of different materials separately and ensure that they are
recycled.
ð
Pay special attention to critical components.The device has a liquid
crystal display (LCD) that contains small amounts of toxic substanc-
es.
2.2 Hazards Due to Non-Compliance with the Safety
Instructions
Failure to follow the safety instructions may endanger not only persons,
but also the environment and the device.
The specific consequences can be:
nFailure of major unit und system functions.
nFailure of required maintenance and repair methods
nRisk to persons when working on the device
nDanger to the environment from overdosing
2.3 Working in a Safety-Conscious Manner
Besides the safety instructions specified in these operating instructions,
further safety rules may apply. Always comply with all safety-relevant
regulations and guidelines which apply at the usage location of the prod-
uct. Note in particular the following items:
nSafety regulations on handling electricity and live components
nSafety regulations on handling hazardous substances
nAccident prevention regulations
nSafety and operating provisions
nEnvironmental protection provisions
nother applicable directives and laws
2.4 Personnel Qualification
Any personnel who work on the device must have appropriate special
knowledge and skills.
Anybody who works on the device should meet the conditions below:
nAttendance at all the training courses offered by the owner
nPersonal suitability for the respective activity
nSufficient qualification for the respective activity
nTraining in how to handle the device
nKnowledge of safety equipment and the way this equipment functions
nKnowledge of these operating instructions, particularly of safety in-
structions and sections relevant for the activity
nKnowledge of fundamental regulations regarding health and safety
and accident prevention
All persons must have one of the following minimum qualifications:
nTraining as specialists to carry out work on the device unsupervised
nSufficient training that they can work on the device under the supervi-
sion and guidance of a trained specialist
2.4.1 Specialist Staff
Thanks to their professional training, knowledge, experience and knowl-
edge of the relevant specifications, specialist staff are able to perform the
job allocated to them and recognise and/or eliminate any possible dan-
gers by themselves.

Safety
6© Lutz-Jesco GmbH 2023
BA-40750-02-V01
Single-Channel Controller TOPAX®L Operating Instructions
2.4.2 Trained Electricians
Due to their professional training, knowledge and experience as well as
knowledge of specific standards and provisions, trained electricians are
able to do the electrical work assigned to them and to recognise and
avoid any potential dangers by themselves.
They are specially trained for their specific working environment and are
familiar with relevant standards and provisions.
They must comply with the legally binding regulations on accident pre-
vention.
2.4.3 Trained Persons
Trained persons have received training from the operator about the tasks
they are to perform and about the dangers stemming from improper be-
haviour.
Trained persons have attended all trainings offered by the operator.
2.4.4 Personnel Tasks
In the table below, you can check what personnel qualifications are re-
quired for the respective tasks. Only people with appropriate qualifica-
tions are allowed to perform these tasks!
Qualification Activities
Specialist staff
nTransportation
nMechanical installation
nCommissioning
nTaking out of operation
nFault rectification
nMaintenance
nRepairs
nDisposal
Trained electricians nElectrical installation
Trained persons nControl
Tab. 3: Personnel Qualification
2.5 Electrical Safety
All of the control unit’s connections are isolated from the grounding sys-
tem (non-insulated grounding conductor). Do not connect any of these
connections to the grounding connector.
To guarantee maximum conditions of safety for the operator, it is recom-
mended to follow all of the instructions listed in this guide:
nOnly power the device using a mains power supply that complies with
the device’s specifications (85 – 265 V AC 50/60Hz or 24 – 48V DC
(24 V AC±20%)).
nReplace any damaged parts immediately. Any cables, connectors, ac-
cessories or other parts of the device that are damaged or not func-
tioning properly must be replaced immediately. In such cases, contact
your nearest authorised technical assistance centre.
nOnly use certified accessories and accessories recommended by the
supplier. The use of accessories and materials from other manufac-
turers or not specifically recommended by the supplier will not guar-
antee the safety and correct operation of the equipment.
2.5.1 Safety in the Operating Environment
The device must be protected against drips, sprays and/or immersion and
should not be used in environments where such risks are present. Any
devices into which liquids may have accidentally penetrated must be im-
mediately shut off, cleaned and inspected by authorised and qualified
personnel.
The transparent panel should be closed once the device has been pro-
grammed.
Protection:
nIP65 Complete
nEMI/RFI CEI EN55011 – 05/99 Class A
The device must be used within the specified environmental temperature,
humidity and pressure limits. The device is designed to operate under the
following environmental conditions:
nTemperature of the operating environment -10 to +50 °C
nStorage and transport temperature -25 °C to +65 °C
nRelative humidity 0 – 100 % condensing
The device must be properly integrated into the system. The system must
be operated in full compliance with the foreseen safety regulations.
The parameters set on the analyser’s control unit must comply with the
applicable regulations.
The control unit’s malfunction signals must be located in an area that is
constantly supervised by the system’s maintenance personnel or opera-
tors.
Failure to respect even just one of these conditions could cause the con-
trol unit’s logic to operate in a potentially dangerous manner for users.
In order to avoid any potentially dangerous situations, the system’s ser-
vice and/or maintenance personnel are advised to work with the utmost
care and to signal any alterations in the safety parameters in a timely
manner.
As the above issues cannot be monitored by the product in question, the
manufacturer shall bear no responsibility for any property damage or per-
sonal injury that may result from such malfunctions.

Intended Use 7
© Lutz-Jesco GmbH 2023
Subject to technical changes.
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BA-40750-02-V01
Single-Channel Controller TOPAX®L Operating Instructions
3 Intended Use
3.1 Notes on Product Warranty
Any non-designated use of the device can impair its function and the pro-
tection provided. This leads to invalidation of any warranty claims!
Please note that liability is on the side of the user in the following cases:
nThe device is operated in a manner that is not consistent with these
operating instructions, particularly safety instructions, handling in-
structions and the section3 "Intended Use" on page7.
nInformation on usage and environment (5 "Technical Data" on
page10) is not adhered to.
nIf people operate the device who are not adequately qualified to carry
out their respective activities.
nUnauthorised changes are made to the device.
3.2 Intended Purpose
As a single-channel controller, the TOPAX L monitors water parameters
during water preparation and wastewater treatment and controls a con-
nected dosing system for water treatment in real time. In this way, it en-
sures constant water values in various applications – taking into account
the given standards and directives. Different models of the TOPAX L are
available, which differ purely in the measuring and controller inputs. All
models measure the temperature.
3.3 Foreseeable Misuse
The following section provides information regarding the device applica-
tions which are classified as non-intended use.This section is intended to
allow you to detect possible misuse in advance and to avoid it.
Foreseeable misuse is assigned to the individual stages of the product
lifetime:
3.3.1 Incorrect Assembly
nConnecting the mains voltage without a protective earth
nNon-fused or non-standard mains voltage
nNot possible to immediately or easily disconnect the power supply
nWrong connecting cables for mains voltage
nSensors and actors connected to the incorrect terminals or incorrectly
configured
nProtective earth removed
3.3.2 Incorrect Commissioning
nCommissioning with damaged or outdated sensors
nCommissioning without establishing all protective measures, fasten-
ings and so on
3.3.3 Incorrect Operation
nProtective equipment not functioning correctly or dismantled
nUnauthorised modification of the controller
nIgnoring of alarm or error messages
nElimination of alarm or error messages by insufficiently-qualified per-
sonnel
nBridging the external fuse
nDifficult operation due to insufficient lighting or poor access to the de-
vice
nOperation not possible due to dirty or illegible display
3.3.4 Incorrect Maintenance
nCarrying out maintenance during ongoing operation
nNo adequate or regular inspection of correct functioning
nNo replacement of damaged parts or cables
nNo securing against reactivation during maintenance work
nUsing the wrong spare parts

Product Description
8© Lutz-Jesco GmbH 2023
BA-40750-02-V01
Single-Channel Controller TOPAX®L Operating Instructions
4 Product Description
4.1 Scope of Delivery
Please compare the delivery note with the scope of delivery. The follow-
ing items are part of the scope of delivery:
nSingle-channel controller TOPAX®L
nQuick guide
nMounting set
4.2 Functions of the Device
The device measures the water parameters using sensors. Controlling
actuators such as dosing pumps controls the water parameters to the re-
quired setpoint.
4.3 Main Features
The device has the following main features:
nInput for one measurement:
Model Measurement Article
no.
TOPAX®L CH/CD Chlorine, chlorine dioxide 40700003
TOPAX®L PH/RD pH / ORP (Redox) 40700001
TOPAX®L LF Conductivity 40700002
TOPAX®L MA
Optical measuring cells:
turbidity, dissolved oxygen
40700004
Diaphragm-covered measuring
cells: bromine, hydrogen
peroxide, chlorite, peracetic acid,
total chlorine, chlorine, chlorine
dioxide
nTemperature measurement with Pt100 / Pt1000 probe
nAutomatic temperature compensation
nControl panel with 5 buttons
nGraphic display (128x128 pixels) with three-colour backlight (white,
green and red)
nCommunication port RS485 MODBUS RTU/ASCII
n2 analogue outputs
n2 digital outputs (SSR)
n4 relay outputs for switching loads and transmitting alarms
n1 reed input for alarm function (sample water missing)
4.4 Control Panel
1
2
345 6
Fig. 1: Control Panel
Item Description
1LCD display
2Cancel action or exit menu
3Move up or increase the value ()
4Select view
5Move down or decrease the value ()
6Confirm action or open the menu
Fig. 2: Legend for the Control Panel
4.5 Standard View
The standard view of the device is split into two sections:
Fig. 3: Standard View
nA: The measured value along with the configured parameters such as
the measurement type, unit, etc.
nB: Temperature value from an external sensor (ext) or a manually set
value (man), as well as alarms and operational information
(such as a service notification).
A
B

Product Description 9
© Lutz-Jesco GmbH 2023
Subject to technical changes.
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Single-Channel Controller TOPAX®L Operating Instructions
4.6 Rating Plate
The product is labelled with information about the product's safety or
function. This information must stay legible for the duration of the service
life of the product.
Fig. 4: Rating Plate
Item Description
1Product name
2Technical specifications
3Label showing conformity with applicable European
directives
4WEEE label
5Serial number
6QR code for the serial number
7Part number
8Production date
Tab. 4: Legend for the Rating Plate
1
2
3 4 5
78
6

Technical Data
10 © Lutz-Jesco GmbH 2023
BA-40750-02-V01
Single-Channel Controller TOPAX®L Operating Instructions
5 Technical Data
5.1 Measurement Specifications
pH/Redox Specifications
pH range 0.00 to 14.00 pH
mV range -2,000 to 2,000 mV
pH resolution 0.01 pH
pH accuracy ± 0.01 pH
mV resolution 1 mV
mV accuracy ± 1 mV
Input impedance > 1012
Tab. 5: pH/Redox Specifications
Conductivity/Resistance Specifications
Range with C 0.01 cm-1 /
K 100 sensor
0.005 µS/cm to 200 µS/cm (5 KΩ x cm to
200 MΩ x cm)
Range with C 0.10 cm-1 /
K 10 sensor
0.05 µS/cm to 2 mS/cm (500 Ω x cm to
20 MΩ x cm)
Range with C 0.20 cm-1 /
K 5 sensor
0.1 µS/cm to 4 mS/cm (250 Ω x cm to 10
MΩ x cm)
Range with C 1.00 cm-1 /
K 1 sensor
0.5 µS/cm to 20 mS/cm (50 Ω x cm to 2
MΩ x cm)
Range with C 10.0 cm-1 /
K 0.1 sensor
5 µS/cm to 200 mS/cm (5 Ω x cm to 200
KΩ x cm)
Range with C 20.0 cm-1 /
K 0.5 sensor
10 µS/cm to 400 mS/cm (2.5 Ω x cm to
100 KΩ x cm)
Cond./resist. resolution 0.0001 / 0.001 / 0.01 / 0.1 / 1 (adjustable
in the menu)
Cond./resist. accuracy ± 2 % on the measuring point
Maximal length of the
sensor cable
Up to 50 m
TDS range 0.3 to 2.0 ppm/µS
Tab. 6: Conductivity/Resistance Specifications
mA Input Specifications
Sensor type Sensor with two or three wires
Sensor power supply 4/20
mA 2 wires
(*) 18 V DC ± 5 %, max 30 mA
Short-circuit protection Active
Measuring range 0 to 20 mA or 4 to 20 mA
Fault state OFF, 3.6 mA, 22 mA
mA Input Specifications
Resolution 1 µA
Accuracy ± 0.2 %
Tab. 7: mA Input Specifications
* To prevent damage to the device, DO NOT exceed the maximum permis-
sible current.
Pt100/Pt1000 Specifications
Temperature input Pt100/Pt1000
Pt100/Pt1000 detection Automatic
Fault state Automatic detection of disconnected/
damaged probe
Supply current 1 mA
Range for temperature
measurement
-50.0 to 150.0 °C
Maximum length of the sensor
cable
10 to 20 m depending on sensor
Temperature resolution 0.1 °C (°F)
Temperature accuracy Pt100: ± 0.5 °C
Pt1000: ± 0.2 °C
Tab. 8: Pt100/Pt1000 Specifications
5.2 Mechanical Specifications
Housing dimensions (W x H x D) 144 x 144 x 122.5 mm
Front frame (W x H) 144 x 144 mm
Weight 1.05 kg
Material ABS/polycarbonate
Protection IP65
Relative humidity 0 – 100 % condensing
Tab. 9: Mechanical Specifications
5.3 Environmental Conditions
Storage temperature -25 to 65 °C
Ambient temperature -10 to 50 °C
Emissions Specifications according to EN55011 Class
A
Tab. 10: Environmental Conditions

Technical Data 11
© Lutz-Jesco GmbH 2023
Subject to technical changes.
230929
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Single-Channel Controller TOPAX®L Operating Instructions
5.4 Electrical Specifications
Power Supply (100 – 240 V AC Version)
Electrical requirements 100 to 240 V AC ± 10 %, 8 W)
Frequency 50 to 60 Hz
Power supply fuse Fuse glass body 5 x 20 mm,
T1.25AL250V
Short-circuit protection Active
Power Supply (24 – 48 V DC Version)
Electrical requirements 24 to 48 V DC, or 24 V AC ±20 %,
8 W
Power supply fuse Fuse glass body 5 x 20 mm,
T1.25AL250V
Short-circuit protection Active
Reverse polarity protection Active
Relay Outputs
RL1, RL2, RL3 and RL4 2-SPST mechanical 250 V AC/ 5
A, 30 V DC/3 A
Relay RL1, RL2 configuration Load activation
Relay RL3, RL4 configuration Load activation, probe cleaning
(RL3 only), alarm repetition
Cycle time 1 – 3600 s
Delay time 1 – 3600 s
Test mode ON, OFF
SSR Outputs (Solid State Relay)
SSR1 and SSR2 2-SPST 60 V, max 100 mA,
bidirectional, NPN, PNP
Resistance when switched ON max. 5 Ω
Leakage current when switched
OFF
max. 1 uA
Configuration SSR1 and SSR2 Pulse output
Frequency range 0 to 400 imp/min.
Pulse duration 100 ms
Test mode 0 to 400 imp/min.
Outputs 4 – 20 mA
Analogue output signals 2 outputs 4 – 20 mA, galvanically
isolated from each other and
from the power supply
Measurement error ± 0.01 mA
Load max. 800°Ω
Fault state NAMUR: OFF, 3.6 mA, 22 mA
Test mode 3 to 23 mA
Digital Inputs
REED digital input Input for potential-free contact, 5
V DC, max. 6 mA
Communication Ports
Digital communication port RS485 Modbus Server ASCII/RTU
standard protocol
Output 24 V DC
Volt 24 V DC ±5 %, max. 250 mA 1
Short-circuit protection Self-resettable fuse
Tab. 11: Electrical Specifications
1To prevent damage to the device, DO NOT exceed the maximum permis-
sible current.
User Interface
Connection terminals Removable screw terminals AWG
14 < 2.5 mm2
Machine cycle time approx. 1 s
Control panel 5 tactile feedback keys
Display Graphic LCD with 128x128
pixels, FSTN, transflective
Refresh display 500 ms
Backlight White, green and red with
energy-saving function
Tab. 12: User Interface

Dimensions
12 © Lutz-Jesco GmbH 2023
BA-40750-02-V01
Single-Channel Controller TOPAX®L Operating Instructions
6 Dimensions
All dimensions in mm
6.1 Outer Dimensions
Fig. 5: Outer Dimensions
6.2 Drillhole Dimensions
Fig. 6: Drillhole Dimensions
Einkanalregler TOPAX L - Maßbild
weiß gefärbt
40700001_2
144
144
122
167
O 6
80
68
Einkanalregler TOPAX L - Maßbild
weiß gefärbt
40700001_2
144
144
122
167
O 6
80
68

Installation 13
© Lutz-Jesco GmbH 2023
Subject to technical changes.
230929
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Single-Channel Controller TOPAX®L Operating Instructions
7 Installation
7.1 Principles
Make sure that the installation location complies with the following re-
quirements:
nThe display is easily accessible and is visible.
nLeave enough space for installing cables underneath the device.
nYou must be able to install the cables without kinking or damaging
them.
nVarious lines (e.g. voltage supply, data cable and sensitive lines for
measuring purposes) must be installed separately. The different lines
should only cross at an angle of 90° to prevent interference.
nElectrical, magnetic and electromagnetic fields affect signal transmis-
sion and can destroy electronic components.
nCompliance with the permissible ambient temperatures (see section 5
"Technical Data" on page10).
7.2 Mounting the Device on the Wall
Pre-conditions for actions:
ü
The wall must be level.
Resources required:
@Assembly kit
@Drill
@Screwdriver
Perform the following work steps:
1. Drill the two holes for mounting the device on the wall (see Fig. 6
"Drillhole Dimensions" on page12).
2. Remove the four screws on the front side of the device.
4You can now open the front panel.
3. Open the device and use the screws provided to secure the device to
the wall.
4. Attach the screw caps provided.
5. Close the device and tighten the four screws on the front side of the
device.
i
The cable glands for the electrical connections are lo-
cated on the lower part of the control unit. To facilitate
the connections, any other devices must be posi-
tioned at least 15 cm apart.
ü
Device mounted on the wall.
7.3 Connecting the Power Supply
If possible, keep any live signal and control cables at a distance and lay
them separately (these could cause inductive disturbances, especially for
the analogical part of the system).
Absolutely avoid connecting the device to a power supply that has been
modified (for example, using transformers) and where the same power
supply is also used to power other systems (e.g. of inductive type). This
could lead to high voltage spikes, which are difficult to block and/or elimi-
nate once emitted.
DANGER
Mortal danger from electric shock!
Improperly installed or damaged components in the electronics instal-
lation can cause injury.
ð
The electrical line must be equipped with an appropriate circuit
breaker, in compliance with the proper installation standards.
ð
The power supply and the quality of the grounding connector must
be checked to avoid electrical interference.
7.4 Installation Recommendations
7.4.1 RC Protection for Relays
When connecting to the relays, note that inductive loads must be sup-
pressed. If this is not possible, the relay contact on the device terminal
must be protected by an RC protective circuit / interference suppression
element.
If devices with inductive loads from a nominal current of 1 A are connect-
ed to a relay, the contacts in the relay may become bonded. Thus, the de-
vice will operate in an uncontrolled manner. To prevent bonding if the load
circuit suffers a short-circuit, the relays must be protected separately on
the maximum relay switching current.
Pre-conditions for actions:
ü
You want to connect an inductive load to the relay.
Perform the following work steps:
1. Switch off the device.
2. Clamp the interference suppression element parallel to the inductive
load.
3. If you cannot perform step 2, clamp the interference suppression ele-
ment parallel to the relay output.
ü
RC protection for relay connected.

Installation
14 © Lutz-Jesco GmbH 2023
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Single-Channel Controller TOPAX®L Operating Instructions
PLEASE NOTE
Danger
Failure to observe this note may lead to risk to the device and its func-
tion.
ð
When a relay output is used to operate a third-party device with an
inductive/capacitive load input (such as contactors, motors, etc.),
overvoltage protection is highly recommended. Check the options
of the third-party devices (see Fig. 8 "Relay Cable Segregation" on
page14).
Fig. 7: Overvoltage Protection
Keep the relay output cable separate from any other cable connected to
the device (see a in Fig. 8). A 90° crossing between the cables is allowed
(see b in Fig. 8).
Fig. 8: Relay Cable Segregation
7.5 Terminal Block
Fig. 9: Terminal Block
Relay Output
Any
Cables/Conduits >= 20 cm
a.
Relay output
Any
Cables/Conduits
Any
Relay output
b.
TOPAX L-
Relay Output
Overvoltage
Protection
User Device
2
13478
56910
11 12 13 14 15 16 17 18
27 28 29 30 31 32 33 3419 20 21 22 23 24 25 26
A B C D E F
SLOT A
L / + N / - RL 1
COM
RL 1
NO
RL 2
COM
RL 2
NO
RL 3
COM
RL 3
NO
RL 4
COM
RL 4
NO
OUT 24 V DC
GND
RTD OUT+
RTD IN +
RTD IN -
RTD OUT -
REED REED
SSR1+
SSR1**
SSR2+
SSR2**
OUT mA1+
OUT mA1-
OUT mA2+
OUT mA2-
NC NC
RS485 B+
RS485 A-
RS485 GND
NC NC NC

Installation 15
© Lutz-Jesco GmbH 2023
Subject to technical changes.
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Single-Channel Controller TOPAX®L Operating Instructions
Terminal Terminal Designation Description
1L / +
Power supply
2N / -
3
RL1
COM
Relay 1 contact
4 NO
5
RL2
COM
Relay 2 contact
6 NO
7
RL3
COM
Relay 3 contact
8 NO
9
RL4
COM
Relay 4 contact
10 NO
11 – 12 Not used Not used
13
RS485
B+
Communication port RS485 MODBUS RTU/ASCII14 A-
15 RS485 GND¹
16 – 18 Not used Not used
19
OUT 24 V DC
+
24 V DC power supply for 4 – 20 mA output sensors
20 GND
21
RTD
OUT +
Pt100 or Pt1000 temperature sensor input
22 IN +
23 IN -
24 OUT -
25
REED
+
REED sensor input
26 -
27
SSR1
+
Frequency output 1
28 -
29
SSR 2
+
Frequency output 2
30 -
31
OUT mA1
+
4 – 20 mA current output 1
32 -
33
OUT mA2
+
4 – 20 mA current output 2
34 -
1RS485 GND terminal is isolated from GND (terminal 20)

Installation
16 © Lutz-Jesco GmbH 2023
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Single-Channel Controller TOPAX®L Operating Instructions
Terminal Terminal Designation Description
A
The connections depend on the existing modules.
For specific connections, see the section for the corresponding measurements.
B
C
D
E
F
Tab. 13: Terminal Assignment
7.5.1 Terminal Connections
Description Graphic
Power supply of the device:
100 – 240 V AC or 24 – 48 V DC (24 V AC)
Note: Check the product label.
Outputs:
R1, R2, R3 and R4: Electromechanical relays
(250 V AC or 30 V DC, 5 A resistive)
Communication ports:
RS485: Serial port for data transmission
Power
supply

Installation 17
© Lutz-Jesco GmbH 2023
Subject to technical changes.
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Single-Channel Controller TOPAX®L Operating Instructions
Description Graphic
Inputs and outputs:
24 V OUT: Voltage supply
Temperature: Pt100/Pt1000 sensor input
Reed: Dry contact signal input
Outputs:
SSR1 and SSR2: Frequency outputs
mA1 and mA2: 4 – 20 mA current sensors
Slot A:
The connections depend on the existing modules.
For specific connections, see the section for the corresponding measurements.
Tab. 14: Terminal Connections
7.5.2 Connecting Probes and Sensors
ü
Switch off the device.
ü
Do not lay the cable near high-power or inverter cables to avoid interference with the measurement.
èConnect the cable of the sensor to the terminal strip of the device.
24 V DC
OFF GND
Temp. Reed
OFF ON ON OFF OFFON

Installation
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Single-Channel Controller TOPAX®L Operating Instructions
7.5.2.1 Connecting a pH/Redox Probe (TOPAX L PH/RD)
ü
Observe the polarity.
ü
Observe the maximum cable length (10 m) for the pH/Redox sensor.
èConnect the probes to the terminals.
Fig. 10: Connecting a pH/Redox Probe
Terminal Description
AInput of the pH/Redox probe (+)
BNot used
C None
D None
EInput of the pH/Redox probe (-)
FNot used
Tab. 15: Connecting a pH/Redox Probe
7.5.2.2 Connecting a Conductivity Probe (TOPAX L LF)
ü
Observe the polarity.
ü
Observe the maximum cable length (50 m) for the conductivity sen-
sor.
èConnect the probes to the terminals.
Fig. 11: Connecting a Conductivity Probe
Terminal Description
ANot used
BConductivity probe input
CConductivity cable shield
DConductivity probe input
ENot used
FNot used
Tab. 16: Connecting a Conductivity Probe
7.5.2.3 Connecting a 0/4 – 20 mA Sensor (TOPAX L MA)
ü
Observe the polarity.
èConnect the probes to the terminals.
Fig. 12: Connecting a 0/4 – 20 mA Sensor
pH/Redox
Sensor
pH/Redox
-
+
EC Cond.
Sensor
LF
Input Cable 1
Shield
Input Cable 2
Input
0/4–20 mA
Sensor
+18V
Input mA
GND mA
Input mA

Installation 19
© Lutz-Jesco GmbH 2023
Subject to technical changes.
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Single-Channel Controller TOPAX®L Operating Instructions
Terminal Description
A+18 V power supply output for the sensor
BCurrent input from sensor (0/20 mA or 4/20 mA)
CGND mA used to connect the three-wire sensors
DNot used
ENot used
FNot used
Tab. 17: Connecting a 0/4 – 20 mA Sensor
7.5.2.4 Connecting an Amperometric Copper-Platinum Chlorine
Sensor (TOPAX L CH/CD)
ü
Observe the polarity.
èConnect the probes to the terminals.
Fig. 13: Connecting an Amperometric Copper-Platinum Chlorine Sensor
Terminal Description
AWorking electrode or measuring electrode (platinum)
BConductivity cable shield
CReference electrode (copper)
DNot used
ENot used
FNot used
Tab. 18: Connecting an Amperometric Copper-Platinum Chlorine Sensor
7.5.3 Connection Examples
7.5.3.1 Power Supply
ü
24 – 48 V DC or 100 – 240 V AC; see product label
ü
Observe the polarity.
ü
Observe maximum power consumption (see 5.4 "Electrical Specifi-
cations" on page11).
Fig. 14: Connection Example for the Power Supply
Power Supply
24 – 48 V DC
Power Supply
100 – 240 V AC
Input
0/4 – 20 mA
Amperom.
Chlorine Sensor
Platinum
Screen
Copper
Input mA

Installation
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Single-Channel Controller TOPAX®L Operating Instructions
7.5.3.2 Frequency Outputs SSR1 and SSR2
ü
Contact closed 5 Ω.
Fig. 15: Connection Example for Frequency Outputs SSR1 and SSR2
7.5.3.3 Relay Outputs 1, 2, 3 and 4
ü
Maximum load 5 A resistive.
Fig. 16: Connection Example for Relay Outputs 1, 2, 3 and 4
Power Supply
100 – 240 V
AC
Dosing
Pump
Dosing
Pump
External
Power Supply
+5 V to 24 V
Input
Gnd
Pull-Up Resistor
10 KΩ, 0.25 W
NPN Type Wiring
Dosing
Pump
Input
Freq.
Type PLC
Dosing
Pump
Input
Freq.
Type
External
Power Supply
PLC
GND
Input
Pull-Up Resistor
10 KΩ, 0.25 W
PNP Type Wiring
Power Supply
100 – 240 V
AC
Alarm
Alarm