OPTISYS SLM 2100
Sludge level meter
Electronic Revision:
1.0.1
Original handbook
© KROHNE 01/2017 - 4002737304 - MA OPTISYS SLM 2100 R04 en
Handbook
: IMPRINT :::::::::::::::::::::::::::::::::::::::
All rights reserved. It is prohibited to reproduce this documentation, or any part thereof, without
the prior written authorisation of KROHNE Messtechnik GmbH.
Subject to change without notice.
Copyright 2017 by
KROHNE Messtechnik GmbH - Ludwig-Krohne-Str. 5 - 47058 Duisburg (Germany)
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CONTENTS
OPTISYS SLM 2100
1 Safety instructions
1.1
1.2
1.3
1.4
6
Software history ............................................................................................................... 6
Intended use ..................................................................................................................... 7
Certifications .................................................................................................................... 7
Safety instructions from the manufacturer ..................................................................... 8
1.4.1
1.4.2
1.4.3
1.4.4
1.4.5
Copyright and data protection ................................................................................................ 8
Disclaimer ............................................................................................................................... 8
Product liability and warranty ................................................................................................ 9
Information concerning the documentation........................................................................... 9
Warnings and symbols used................................................................................................. 10
1.5 Safety instructions for the operator............................................................................... 10
2 Device description
11
2.1 Scope of delivery............................................................................................................. 11
2.2 Device description .......................................................................................................... 12
2.3 Nameplate ...................................................................................................................... 14
3 Installation
3.1
3.2
3.3
3.4
15
General notes on installation ......................................................................................... 15
Storage and transport .................................................................................................... 15
Typical measuring point ................................................................................................. 16
Installation order............................................................................................................ 17
3.4.1 Mounting of the sludge level meter...................................................................................... 18
3.5 Installing the cleaning unit (optional) ............................................................................ 24
3.5.1 Installation of the water hose to cleaning unit..................................................................... 25
4 Electrical connections
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
27
Safety instructions.......................................................................................................... 27
Used abbreviations ......................................................................................................... 27
Description of electrical symbols................................................................................... 28
Important device-specific notes on electrical connection............................................. 29
Overview of cable connections ....................................................................................... 30
Overview of the terminal compartment ......................................................................... 31
Connecting the power supply......................................................................................... 32
Description and properties of the output and the input ................................................ 34
4.8.1 Current output ...................................................................................................................... 34
4.8.2 Control input (active)............................................................................................................. 35
4.9 Connection of output and input ...................................................................................... 36
4.9.1 Important notes..................................................................................................................... 36
4.9.2 Current output ...................................................................................................................... 37
4.9.3 Electrical connection of control inputs................................................................................. 38
4.10 Description and properties of the relays ..................................................................... 40
4.10.1 Connection of the relays ..................................................................................................... 41
4.11 Protection category ...................................................................................................... 42
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CONTENTS
OPTISYS SLM 2100
5 Operation
5.1
5.2
5.3
5.4
43
Start-up and general remarks for configuration........................................................... 43
Switching on the power .................................................................................................. 44
Operating elements ........................................................................................................ 45
Measuring page .............................................................................................................. 46
5.4.1 Navigating through the menus ............................................................................................. 47
5.5 Menu mode structure..................................................................................................... 51
5.6 Function tables ............................................................................................................... 52
5.6.1 Menu A, quick setup.............................................................................................................. 52
5.6.2 Menu B, test .......................................................................................................................... 52
5.6.3 Menu C, setup ....................................................................................................................... 53
5.7 Functions in detail .......................................................................................................... 58
5.7.1 Definition of positions and zones.......................................................................................... 59
5.7.2 Initial configuration in extended settings ............................................................................. 60
5.7.3 Measuring function ............................................................................................................... 61
5.7.4 Assignment of current outputs............................................................................................. 62
5.7.5 Measuring mode ................................................................................................................... 62
5.7.6 Definition of fluff and blanket concentration........................................................................ 63
5.7.7 Definition of settings in zone tracking mode........................................................................ 63
5.7.8 Rake guard / trigger input .................................................................................................... 64
5.7.9 Timer / start signal ............................................................................................................... 64
5.7.10 Maintenance switch ............................................................................................................ 64
5.7.11 Calibration........................................................................................................................... 65
5.7.12 Reference point calibration ................................................................................................ 68
5.7.13 Passwords ........................................................................................................................... 68
5.7.14 Timeout function ................................................................................................................. 68
5.8 Status messages and diagnostic information................................................................ 69
5.8.1
5.8.2
5.8.3
5.8.4
Error category "Device failure" (bold "F") ............................................................................ 70
Error category "Application error" ( "F", not bold) .............................................................. 71
Error category "Information" (I) ........................................................................................... 71
Error category "Out of specification" (S) .............................................................................. 71
6 Service
72
6.1 Manual initiation of a measurement .............................................................................. 72
6.2 Maintenance ................................................................................................................... 72
6.2.1 Cleaning unit (optional)......................................................................................................... 74
6.3 Spare parts availability................................................................................................... 75
6.4 Availability of services .................................................................................................... 75
6.5 Returning the device to the manufacturer..................................................................... 75
6.5.1 General information.............................................................................................................. 75
6.5.2 Form (for copying) to accompany a returned device............................................................ 76
6.6 Disposal .......................................................................................................................... 76
7 Technical data
77
7.1 Measuring principle........................................................................................................ 77
7.2 Technical data................................................................................................................. 78
7.3 Dimensions ..................................................................................................................... 81
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CONTENTS
OPTISYS SLM 2100
8 Notes
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1 SAFETY INSTRUCTIONS
OPTISYS SLM 2100
1.1 Software history
The "Electronic Revision" (ER) is consulted to document the revision status of electronic
equipment according to NE 53 for all devices. It is easy to see from the ER whether
troubleshooting or larger changes in the electronic equipment have taken place and how that
has affected the compatibility.
Changes and effect on compatibility
1
Downwards compatible changes and fault repair with no effect on operation (e.g. spelling
mistakes on display)
2-_
Downwards compatible hardware and/or software change of interfaces:
3-_
H
HART®
P
PROFIBUS
F
Foundation Fieldbus
M
Modbus
X
all interfaces
Downwards compatible hardware and/or software change of inputs and outputs:
I
Current output
F, P
Frequency / pulse output
S
Status output
C
Control input
CI
Current input
X
all inputs and outputs
4
Downwards compatible changes with new functions
5
Incompatible changes, i.e. electronic equipment must be changed.
INFORMATION!
In the table below, "x" is a placeholder for possible multi-digit alphanumeric combinations,
depending on the available version.
6
Release date
Electronic revision
Changes and
compatibility
Documentation
04/2013
ER 1.0.0
-
MA OPTISYS SLM 2100
R02 en
XX/2015
ER 1.0.1
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MA OPTISYS SLM 2100
R03 en
MA OPTISYS SLM 2100
R04 en
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SAFETY INSTRUCTIONS 1
OPTISYS SLM 2100
1.2 Intended use
The OPTISYS SLM 2100 sludge level meter is primarily designed for use in water and waste
water treatment plants. There it determines the sedimentation profile in clarifiers and sludge
thickeners and detects sludge blanket or fluff level. For this it measures the suspended solids
concentration and height of the sensor above ground as the sensor is lowered into the basin or
tank.
However, the design of the OPTISYS SLM 2100 makes it possible to use it in other applications
where reliable monitoring of interface or stratification in suspensions is necessary.
The OPTISYS SLM 2100 shall not be used in hazardous areas, which e.g. require Ex approvals. It
could ignite gases. Additionally, due to the sensors material, the meter shall not be used in
applications with a high concentration of salt (e.g. seawater). The device has been constructed
for indoor and outdoor use below the maximum altitude of 2000 m / 6562 ft.
By observing the operation instructions, national standards, safety requirements and accident
prevention regulations the residual risk is reduced to an acceptable level.
1.3 Certifications
CE marking
The device meets the essential requirements of the EU directives. The CE marking indicates the
conformity of the product with the union legislation applying to the product and providing for CE
marking.
For full information of the EU directives and standards and the approved certifications, please
refer to the EU declaration on the KROHNE website
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1 SAFETY INSTRUCTIONS
OPTISYS SLM 2100
1.4 Safety instructions from the manufacturer
1.4.1 Copyright and data protection
The contents of this document have been created with great care. Nevertheless, we provide no
guarantee that the contents are correct, complete or up-to-date.
The contents and works in this document are subject to copyright. Contributions from third
parties are identified as such. Reproduction, processing, dissemination and any type of use
beyond what is permitted under copyright requires written authorisation from the respective
author and/or the manufacturer.
The manufacturer tries always to observe the copyrights of others, and to draw on works created
in-house or works in the public domain.
The collection of personal data (such as names, street addresses or e-mail addresses) in the
manufacturer's documents is always on a voluntary basis whenever possible. Whenever
feasible, it is always possible to make use of the offerings and services without providing any
personal data.
We draw your attention to the fact that data transmission over the Internet (e.g. when
communicating by e-mail) may involve gaps in security. It is not possible to protect such data
completely against access by third parties.
We hereby expressly prohibit the use of the contact data published as part of our duty to publish
an imprint for the purpose of sending us any advertising or informational materials that we have
not expressly requested.
1.4.2 Disclaimer
The manufacturer will not be liable for any damage of any kind by using its product, including,
but not limited to direct, indirect or incidental and consequential damages.
This disclaimer does not apply in case the manufacturer has acted on purpose or with gross
negligence. In the event any applicable law does not allow such limitations on implied warranties
or the exclusion of limitation of certain damages, you may, if such law applies to you, not be
subject to some or all of the above disclaimer, exclusions or limitations.
Any product purchased from the manufacturer is warranted in accordance with the relevant
product documentation and our Terms and Conditions of Sale.
The manufacturer reserves the right to alter the content of its documents, including this
disclaimer in any way, at any time, for any reason, without prior notification, and will not be liable
in any way for possible consequences of such changes.
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SAFETY INSTRUCTIONS 1
OPTISYS SLM 2100
1.4.3 Product liability and warranty
The operator shall bear responsibility for the suitability of the device for the specific purpose.
The manufacturer accepts no liability for the consequences of misuse by the operator. Improper
installation or operation of the devices (systems) will cause the warranty to be void. The
respective "Standard Terms and Conditions" which form the basis for the sales contract shall
also apply.
1.4.4 Information concerning the documentation
To prevent any injury to the user or damage to the device it is essential that you read the
information in this document and observe applicable national standards, safety requirements
and accident prevention regulations.
If this document is not in your native language and if you have any problems understanding the
text, we advise you to contact your local office for assistance. The manufacturer can not accept
responsibility for any damage or injury caused by misunderstanding of the information in this
document.
This document is provided to help you establish operating conditions, which will permit safe and
efficient use of this device. Special considerations and precautions are also described in the
document, which appear in the form of icons as shown below.
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1 SAFETY INSTRUCTIONS
OPTISYS SLM 2100
1.4.5 Warnings and symbols used
Safety warnings are indicated by the following symbols.
DANGER!
This warning refers to the immediate danger when working with electricity.
DANGER!
This warning refers to the immediate danger of burns caused by heat or hot surfaces.
DANGER!
This warning refers to the immediate danger when using this device in a hazardous atmosphere.
DANGER!
These warnings must be observed without fail. Even partial disregard of this warning can lead to
serious health problems and even death. There is also the risk of seriously damaging the device
or parts of the operator's plant.
WARNING!
Disregarding this safety warning, even if only in part, poses the risk of serious health problems.
There is also the risk of damaging the device or parts of the operator's plant.
CAUTION!
Disregarding these instructions can result in damage to the device or to parts of the operator's
plant.
INFORMATION!
These instructions contain important information for the handling of the device.
LEGAL NOTICE!
This note contains information on statutory directives and standards.
• HANDLING
This symbol designates all instructions for actions to be carried out by the operator in the
specified sequence.
i RESULT
This symbol refers to all important consequences of the previous actions.
1.5 Safety instructions for the operator
WARNING!
In general, devices from the manufacturer may only be installed, commissioned, operated and
maintained by properly trained and authorized personnel.
This document is provided to help you establish operating conditions, which will permit safe and
efficient use of this device.
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DEVICE DESCRIPTION 2
OPTISYS SLM 2100
2.1 Scope of delivery
INFORMATION!
Inspect the packaging carefully for damages or signs of rough handling. Report damage to the
carrier and to the local office of the manufacturer.
INFORMATION!
Do a check of the packing list to make sure that you have all the elements given in the order.
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order.
Check for the correct supply voltage printed on the nameplate.
Figure 2-1: Scope of delivery
1
2
3
4
Sludge level meter (optional with cleaning unit and spray shield)
Key for cable drum lock and key for electronic compartment lock
Mounting accessories
Documentation
Optional accessories
• Mounting frame
• Rod steel U-bolts for round handrail
• Cleaning unit
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2 DEVICE DESCRIPTION
OPTISYS SLM 2100
2.2 Device description
Figure 2-2: Device description of OPTISYS SLM 2100
1 Fan
2 Electronic compartment door with display
3 Cable drum compartment door
4 Guide roller and zero point reference switch
5 Sensor
6 4 x cable feedthrough M20
7 Cable drum with heating unit at the back
8 Pickup and axle board with optical interface
9 Safety switch
10 Main electronics and connectors
Main electronics unit
The main electronic unit is located in a separate compartment above the cable drum, which can
be accessed via a separate door with a key lock. It contains the mainboard and fan assembly. The
mainboard bears the main processor and all electrical connectors. It also controls all
mechanical and electrical events in the device and communicates with sensor, display and
keyboard. It additionally contains the current outputs and control inputs.
Fan assembly
The position of the fan is on the top right side of the enclosure. In combination with the heater
the instrument maintains suitable temperature conditions inside the enclosure of the meter.
DANGER!
The rotating fan blades can be accessed, when the electronic compartment door is open and
there is a risk of injury when rotating fan is touched.
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DEVICE DESCRIPTION 2
OPTISYS SLM 2100
Display and keyboard
Display and keyboard are located in the front door of the electronics compartment. Display and
keyboard are based on the GDC (general device concept), which means a common HMI (human
machine interface) to all KROHNE GDC instruments is provided. The keyboard consists of four
membrane keys and the display is a LCD graphic display with a resolution of 128 x 64 Pixel.
Cable drum assembly and heater unit
The cable drum helps to move the sensor up and down in the basin. It is mounted directly on the
motor shaft of a synchronous motor, hidden behind the drum mounting plate. The cable drum
always moves with a very constant speed. Since the diameter of the cable roll in the drum varies,
the speed of the sensor varies. That is why the sensor moves slower during the end of the
sampling. Due to the roll design, shortening of cable or movement of the metal sleeve on the
sensor cable is prohibited. This will lead to different diameter of the cable roll and finally
resulting in wrong results in the height/depth measurements. The heater unit is located behind
the drum mounting plate. In combination with the fan the instrument maintains suitable
temperature conditions inside the enclosure of the meter.
Guide roller and zero point reference switch
The guide roller helps to keep the cable in place during the measuring process. A stable height
measurement is reached by zero point reference switch. The inductive proximity switch reacts
on the metal sleeve on the sensor cable and calibrates the home position. Each time when
leaving the menu the device performs a zero point calibration. In addition a regular calibration
during the process can be performed time based via the setup.
Sensor
The sensor used in the OPTISYS SLM 2100 is a suspended solid sensor. The sensor contains a
near-infrared light source and a receiver in an angle of 180°. Both are positioned in such a way
that the emitted near-infrared light has to pass through the liquid before reaching the receiver.
The suspended solids in the liquid absorb the emitted light leading to a lower intensity at the
detector. The light loss is proportional to the suspended solid content.
Pickup board & axle board
The pickup board is mounted on a spring loaded lever arm and transfers power and
communication signals to the cable drum.
The axle board on the cable drum is powered contactless ("inductively") by the pickup board. It
communicates with the main electronics unit via the pickup board and with the sensor via an
optical interface.
Cable feedthroughs
The 4 M20 cable feedthroughs are for the connection of power, signal and control cables. Only
three cable feedthroughs can be used, if the optional cleaning unit is installed.
Safety switch
The safety switch located on the top left corner of the cable drum compartment is a protective
device, which de-energizes the motor when the front door is opened in order to avoid danger due
to moving parts inside the meter.
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2 DEVICE DESCRIPTION
OPTISYS SLM 2100
Cleaning unit (optional)
The cleaning unit, mounted under the device, consists of a valve and a spraying system to keep
the sensor and cable free of deposits ensuring low maintenance efforts of OPTISYS SLM 2100.
The cleaning unit uses water which can be supplied either by an external water source (process
water) or by water from the clear water phase. The latter can be performed by an external pump
which is controlled by the OPTISYS SLM 2100.
2.3 Nameplate
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order.
Check for the correct supply voltage printed on the nameplate.
Figure 2-3: Example of a nameplate
1 Manufacturer
2 CE marking
3 Manufacturing year,
Electronic revision,
Power supply data
4 Protection categories
5 Observe the operation and installation instruction,
Electronic / electric device waste marking,
Data matrix code
6 Order code / TAG no.
7 Production order / Serial number
8 Device name
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INSTALLATION 3
OPTISYS SLM 2100
3.1 General notes on installation
INFORMATION!
Inspect the packaging carefully for damages or signs of rough handling. Report damage to the
carrier and to the local office of the manufacturer.
INFORMATION!
Do a check of the packing list to make sure that you have all the elements given in the order.
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order.
Check for the correct supply voltage printed on the nameplate.
INFORMATION!
The display should be mounted in a height of 1.5...1.8 m / 4.9...5.9 ft to prevent ergonomic
hazards.
INFORMATION!
During work on the device above the basin the personnel have to be protected by personal safety
equipment.
3.2 Storage and transport
• Store and transport the device in a dry, dust-free environment.
• Store and transport the device in an environment with a temperature between -20...+60°C /
-4...+140°F.
• The original packing is designed to protect the equipment. It has to be used if the device is
transported or sent back to the manufacturer including the sensor fixation inside the device,
to prevent damage of the sensor.
INFORMATION!
Due to the weight above 20 kg / 44.1 lbs please lift and carry the device only with two persons or
use appropriate lifting equipment and if the surfaces of the device are wet, please use gloves for
lifting.
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3 INSTALLATION
OPTISYS SLM 2100
3.3 Typical measuring point
Figure 3-1: Example of typical measuring points
1
2
3
4
16
OPTISYS SLM 2100 with brackets for round handrail on horizontal post
OPTISYS SLM 2100 with brackets for rectangular handrail (not included of scope of delivery)
OPTISYS SLM 2100 mounted on a wall
Handrail
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INSTALLATION 3
OPTISYS SLM 2100
3.4 Installation order
DANGER!
Do not install the sludge level meter in hazardous areas, it can ignite explosive gases!
DANGER!
Do not cover or obstruct the ventilation. It can lead to overheating of the device.
INFORMATION!
The device must not be heated by radiated heat (e.g. exposure to the sun) to a electronics
housing surface temperature above the maximum permissible ambient temperature. If it is
necessary to prevent damage from heat sources, a heat protection (e.g. sun shade) has to be
installed.
INFORMATION!
The operator is responsible for providing, securing and the possibility of switching off the supply
voltage.
INFORMATION!
The external electrical main switch (red / yellow) of the device has to be located close to the
device and easily accessible. An internal main switch is not available.
INFORMATION!
The device should be located at save installation site in order to prevent the danger of falling in
the water basin. Furthermore, there should be enough space in front of the device ensuring an
easy access.
To install the measuring system in the best way, follow the steps described below.
Steps to install the meter
1 Mounting of the sludge level meter
(for detailed information refer to Mounting of the sludge level meter on page 18).
2 Installing the cleaning unit (optional)
(for detailed information refer to Cleaning unit (optional) on page 74)
3 Connecting the power supply
(for detailed information refer to Connecting the power supply on page 32).
4 Connection of the current outputs
(for detailed information refer to Current output on page 37).
5 Connecting the rake guard switch / external trigger or maintenance switch - if required
(for detailed information refer to Electrical connection of control inputs on page 38).
6 Configuration of the sludge level meter
(for detailed information refer to Functions in detail on page 58).
7 Calibration of the sludge level meter
(for detailed information refer to Calibration on page 65).
INFORMATION!
For decommissioning of the device please repeat the steps above in reverse order from 5 to 1.
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3 INSTALLATION
OPTISYS SLM 2100
3.4.1 Mounting of the sludge level meter
INFORMATION!
To ensure proper assembly, please use only the mounting material provided with the meter.
INFORMATION!
All bolts, nuts and washers should be greased to prevent cold welding and ensure simple
disassemble after use.
INFORMATION!
Please ask a second person to help with this procedure.
Due to many different applications and installation points of sludge level meter a standardised
mounting is often not applicable. To overcome the problem of the local conditions three different
opportunities exist to order the mounting of the sludge meter.
Available mounting possibilities
INFORMATION!
Ensure that the handrail is suitable for the weight of the mounting frame and the device
(standard: 26.5 kg / 58.4 lbs, with cleaning unit: 31kg / 68.3 lbs); otherwise support the handrail
with additional material. The operator is responsible for safe installation, especially against the
fall in the sedimentation basin.
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INSTALLATION 3
OPTISYS SLM 2100
Direct mounting without frame
The sludge meter can be mounted directly on the wall. The sludge level meter has 4 M6 threads
on the back and on the bottom of the instrument. If the threads on the bottom are used, ensure
that there is enough space for sensor, cable feedthroughs and the cleaning unit. For further
information refer to Dimensions on page 81.
• Mount the meter using the 4 M6 screws
Figure 3-2: Mounting on wall
1 4 x M6 screws
2 Wall
3 OPTISYS SLM 2100
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3 INSTALLATION
OPTISYS SLM 2100
Mounting frame
The mounting frame can be used for round or rectangular handrails. For rectangular handrails
suitable rectangular brackets should be selected which are not part of the scope of delivery. Use
at least 3 fixation points as described in the installation of round handrails. For further
information refer to Dimensions on page 81.
Mounting frame with brackets with round handrail (vertical or horizontal)
This option allows installing the sludge level meter on many round handrails. The rod steel Ubolts cover handrails between diameters of 33...60.3 mm / 1.3...2.37 inch. Two round rod steel Ubolts fixate the mounting frame on the upper handrail. A further rod steel U-bolt stabilises the
sludge level meter by fixation to a horizontal or vertical bar.
Mounting on round handrail with horizontal bar
Figure 3-3: Mounting of upper handrail
1 Rod steel U-bolts
• Mount the frame using the rod steel U-bolts (M10) and nuts 1 in a position that the frame is
above the handrail.
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INSTALLATION 3
OPTISYS SLM 2100
Mounting on lower round handrail with horizontal bar
Figure 3-4: Mounting of lower handrail (horizontal)
1 Screws and nuts
2 Rod steel U-bolt
3 Adapter for lower handrail
•
•
•
•
•
•
•
•
Find suitable and stable positions of the lower crossbars.
Fix crossbars with screws (M8 x 20), nuts and washers 1.
On both crossbars mount the adaption plate 3.
Mount the rod steel U-bolt (M10) 2 to the horizontal pole with washers.
Use the slot holes to adjust the respective height.
Adjust the position of all brackets.
Tighten all screws.
Position the meter on the frame and tighten it with M6 screws.
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3 INSTALLATION
OPTISYS SLM 2100
Mounting on lower round handrail with vertical bar
Figure 3-5: Mounting of lower handrail (vertical)
1 Screws and nuts
2 Rod steel U-bolt
3 Adapter for lower handrail
•
•
•
•
•
•
•
22
Find suitable and stable positions of the lower crossbars.
Fix crossbars with screws and nuts 1.
On one crossbar mount the adaption plate 3.
Mount the rod steel U-bolt 2 to the vertical pole.
Adjust the position of all brackets.
Tighten all screws.
Position the meter on the frame and tighten it with M6 screws.
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INSTALLATION 3
OPTISYS SLM 2100
Fixing the meter
Figure 3-6: Mounting device on handrail
• Fix the meter to the upper part of the mounting frame using screws (M6 x 16) and washers
according to the drawing above.
• Please make sure that the meter is mounted in such a height that display and keyboard are at
eye level.
• Remove the sensor transportation protection to prevent blocking of the sensor.
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3 INSTALLATION
OPTISYS SLM 2100
3.5 Installing the cleaning unit (optional)
The cleaning unit, mounted under the device, consists of a valve and a spraying system to keep
the sensor and cable free of deposits ensuring low maintenance efforts of the device. The
cleaning unit is mounted and electrically connected to the device by the manufacturer with
exception of the spray shield and the water connection.
If installing a device containing a cleaning unit, keep a safety area around the sensor garage free
from electrical device or water sensitive parts, as outlined in the following drawing.
Figure 3-7: Safety area
1 Radius: 2 m / 78.74"
The cleaning unit can be supplied with water by 2 options:
• External water supply by hose with drinking or process water.
• Water supplied by pumped clear water of the sedimentation basin. For further information
refer to Description and properties of the relays on page 40.
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3.5.1 Installation of the water hose to cleaning unit
WARNING!
The maximum allowed water pressure should not exceed 6 bar / 87 psi.
INFORMATION!
An external separation switch of the water supply has to be located close to the device and easily
accessible.
A 3/4" male connector (Whitworth EN 10226) with metric thread provides the mounting junction
for the water hose adapter.
When installing the water hose adapter on the connector, carefully fix the nut of the fitting. The
electric valve inside the cleaning system housing may be twisted, which may cause water
leakage.
When installing the device, make sure the water hose is adequately fixed as outlined. Mount the
water hose in such a way that the weight of it is not carried by the hose adapter. When fixing the
hose also take into account that it must be avoided that it moves when the system is switched
on/off.
Figure 3-8: Fixing points water hose
1 Water hose
2 Fixing points
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3 INSTALLATION
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Mounting sprayshield
Figure 3-9: Mounting sprayshield
1 Push the sprayshield above the cleaning unit. Please be aware that the holes are align to each other.
2 Insert the 4 M6 screws.
• The sprayshield has to be mounted by the operator using 4 M6 screws to the cleaning unit as
described in this drawing.
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4.1 Safety instructions
DANGER!
All work on the electrical connections may only be carried out with the power disconnected. Take
note of the voltage data on the nameplate!
DANGER!
Observe the national regulations for electrical installations!
WARNING!
Observe without fail the local occupational health and safety regulations. Any work done on the
electrical components of the measuring device may only be carried out by properly trained
specialists.
WARNING!
Before performing any work on the device switch off the power and make sure that it cannot be
switched on accidently.
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order.
Check for the correct supply voltage printed on the nameplate.
4.2 Used abbreviations
Abbreviation
Description
CIa
Control input active
Ia
Current output active
Imax
Maximum current
Inom
Nominal current
RL
Load resistance
P
Power
Uint, nom
Nominal internal voltage
Uext
External voltage
Uo
Terminal voltage
VAC
Alternating current (AC) voltage
CI
Control input
PCS
Process control system
NO
Switch (normally open)
NC
Switch (normally closed)
LED
Light-emitting diode
K
Relay
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4.3 Description of electrical symbols
Symbol
Description
Ampere meter, 0...20 mA or 4...20 mA, RL is the internal resistance of the
measuring point including the cable resistance
Internal direct current (DC) voltage source
Controlled internal current source in the device
Switch, NO contact or similar
Input, galvanically insulated
Positive temperature coefficient (PTC) resistance
LED
Protection switch
Grounding
Motor
Heater
Fan
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Symbol
Description
Valve
Pump
Limit switch
4.4 Important device-specific notes on electrical connection
DANGER!
Never install or operate the device in potentially explosive areas, it might cause an explosion that
can result in fatal injuries!
DANGER!
The device must be grounded in accordance with regulations in order to protect personnel
against electric shocks.
DANGER!
When installing and wiring the device, note the safety regulations of the current state of the art.
Also note the following items to avoid fatal injuries, destruction or damage of the device or
measuring errors:
• De-energise the cables of the power supply before you start any installation works!
• All used cables must have a corresponding dielectric strength of min. 2 kV.
• It is recommended to use shielded signal cables which are only connected on one side (e.g. to
the protective earth on the mainboard next to the relays).
• If relays are used, note that with inductive loads the interference must be suppressed (spark
quenching).
• Assure that all electrical connection works are compliant with the VDE 0100 directive
"Regulations for electrical power installations with line voltages up to 1000 V" or equivalent
national regulations.
• Use suitable cable glands for the various electrical cables and suitable connecting cables for
the field of application. The outer diameter of the connecting cables has to fit to the cable
glands.
• The nominal voltage of the connecting cable has to fit to the operating voltage of the device.
• If the handrail is not adequately grounded, ground the device with a wire of 6 mm2 / 10 AWG
(American Wire Gauge).
INFORMATION!
Assembly materials and tools are not part of the delivery. Use the assembly materials and tools
in compliance with the applicable occupational health and safety directives.
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4.5 Overview of cable connections
DANGER!
When installing and wiring the device, note the safety regulations of the current state of the art.
Also note the following items to avoid fatal injuries, destruction or damage of the device or
measuring errors:
• Do not run cables on pathways. Regularly check the cable runs for loose cables hanging into
footpaths.
• Before connecting main power, all connectors at the connecting terminal need to be plugged.
• Please pay attention to the front doors. Make sure that the doors do not shut if hands or tools
are inside the meter. Otherwise the sharp edges of the doors can cause fatal injuries or
damage to the equipment.
In the bottom lower left corner of the enclosure there are 4 cable feedthrough connections as
cable feedthroughs to the electronics compartment (if the cleaning unit is used only 3
feedthroughs are available). All connected cables have to be installed via these feedthroughs.
INFORMATION!
In order to assure proper sealing of the cable feedthrough only cables with a diameter between
6...12 mm / 0.24...0.47 inch should be used.
After feeding the cables through the feedthroughs they are run in the cable guide to the bottom
of the electronics compartment where they need to be fed into another cable guide in order to be
routed further to the connectors at the mainboard.
Figure 4-1: Overview of cable connections
1 4 x M20 cable feedthroughs (if the cleaning unit is used only 3 feedthroughs are available)
2 Cable guides
3 Mainboard with connector blocks
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4.6 Overview of the terminal compartment
The terminal compartment is located in the electronic compartment at the lower part of the
mainboard.
Figure 4-2: Overview of the electrical connections
1
2
3
4
5
6
7
Power connections (for further information refer to Connecting the power supply on page 32.)
Motor, heater and fan connection block (connected at factory)
Cleaning connection block (connected at factory)
Relay connection block (for further information refer to Description and properties of the relays on page 40.)
External connection block (connected at factory)
Output connection block ((for further information) refer to Current output on page 37.)
Control inputs connection block (for further information refer to Electrical connection of control inputs on page 38.)
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4.7 Connecting the power supply
DANGER!
Never install or operate the device in potentially explosive areas, it might cause an explosion that
can result in fatal injuries!
DANGER!
The device must be grounded in accordance with regulations in order to protect personnel
against electric shocks.
CAUTION!
When connecting the power supply, always note the safety regulations of the current state of the
art. To avoid fatal injuries, destruction or damage of the device or measuring errors, also note
the following items:
• De-energise the cables of the power supply before you start any installation works!
• Ground the device (cross section of the wire is 6 mm2 / 10 AWG).
• The device must be led over a ground fault circuit interrupter (GFCI) 0.03 A which has to be
tested every 6 months.
• Inspect the continuous PE conductor connection to all contactable metal parts by carrying out
a standardised procedure (The maximum allowed resistance is 0.5 Ohm).
• Assure that there is a fuse protection for the infeed power circuit (Inom ≤ 6 A).
• Check the nameplate and assure that the power supply meets the voltage and frequency of
the device. The device can be operated with 230 VAC (-15/+10%) at 50 Hz (±10%) and max.
150 VA. A power supply outside these specifications may destroy the device!
• Assure that the protective earth conductor (PE) is approx. 5 mm / 0.20" longer than the L- and
N-conductor.
INFORMATION!
The operator is responsible for providing, securing and the possibility for switching off the supply
voltage.
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Before you start to connect the power supply cables, note the following drawing with the function
of the terminals:
Figure 4-3: Connecting power supply
1 Live (L)
2 Neutral (N)
3 Protective earth (PE)
INFORMATION!
All cables must have a test voltage of min. 2 kV and an appropriate outer insulation (additional to
the insulation of the individual wire). The outer insulation should be removed 40 mm / 1.57". The
minimum cross section of the wires is 1.5 mm2 / 16 AWG and the maximum is 2.5 mm2 / 12 AWG.
INFORMATION!
In order to assure proper sealing of the cable feedthrough only cables with a diameter between
6...12 mm / 0.24...0.47 inch should be used.
INFORMATION!
The device contains an internal fuse (1.6 A slow blow). Replacement of the fuse should only be
carried out by a service technician.
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4.8 Description and properties of the output and the input
4.8.1 Current output
The electrical properties of the current outputs are described in the following table.
Output range
4...20 mA
Mode of output
Active
Electrical isolation
All outputs are electrically isolated from the power
supply
Load resistance (LR)
≤ 550 Ω at Imax ≤ 22 mA
Nominal internal voltage (Uint, nom)
15 VDC
The function of outputs depends on which measuring function has been selected. It is changing
automatically if the measuring function has been changed as outlined in the following table.
Measuring function
Level
Profile
Zone tracking
Current output A
Height / depth of
concentration (fluff) 1
Height / depth of the
sensor position 1
Height / depth of the
sensor position 1
Current output B
Height / depth of
concentration (sludge
blanket) 1
2
Measured concentration
Measured concentration
2
1 Range is calculated automatically according to the parameters filled in the extended setup; range of analog output is
shown in the I/O setup of the device.
2 Concentration range of the output must be defined in the I/O setup of the device.
Error signalling is possible via current output (error current & error class adjustable via
software). For further information refer to Menu C, setup on page 53.
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4.8.2 Control input (active)
INFORMATION!
The factory default is a disabled control input!
The electrical properties of the 3 control inputs (CI) in detail are the following:
Mode of input
Active, not polarity sensitive
Maximal voltage (Umax)
15 VDC
Voltage out (U out)
8 VDC
Current out (I out)
-10 mA
Voltage low (U low)
<2V
Voltage high ( U high)
>4V
Function of the control inputs
The three active control inputs can trigger different events in the meter from outside. They are
engaged via simple contact closure of an external contact.
The 3 control inputs (CI) have the following functions:
• Control input 1: Rake guard switch or external trigger (selectable via software)
• Control input 2: Rake guard switch or external trigger (selectable via software)
• Control input 3: Maintenance mode
Rake guard switch
CAUTION!
To avoid damages or destructions, use a limit rake guard switch in all applications where a rake
or other moving devices may come in contact with the sensor or cable! The manufacturer does
not assume any responsibility for damages caused by the absence or malfunction of the rake
guard limit switch.
To protect the sensor and cable from being damaged or destructed by rakes or other moving
parts, the control input 1 and 2 can be used. For this purpose a NO switch has to be connected to
CI 1 / 2 (Note the switch is not part of the scope of delivery. The additional part has to be
purchased from another manufacturer). In case CI 1 / 2 is set to rake guard switch, the sampling
will be interrupted and the sensor hauled back as soon as the external contact is closed.
External trigger
The function of the external trigger is to trigger the sampling process. For this purpose a NO
switch has to be connected to CI 1 / 2 (Note the switch is not part of the scope of delivery. The
additional part has to be purchased from another manufacturer). In case CI 1 / 2 is set to
external trigger mode the sampling cycle will start as soon as the external contact is closed.
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Maintenance mode
The function of the maintenance mode is to set the device to maintenance mode in order to
enable easy cleaning of sensor, cable and meter. For this purpose a NO switch has to be
connected to CI 3 (Note the switch is not part of the scope of delivery. The additional part has to
be purchased from another manufacturer). In case CI 3 is activated the sampling cycle will be
interrupted and the sensor is hauled back to the home position as soon as the external contact is
closed. After that, the current outputs are frozen and the sensor can be moved by the simple
push of the arrow buttons on the keypad.
4.9 Connection of output and input
4.9.1 Important notes
DANGER!
Never install or operate the device in potentially explosive areas, it might cause an explosion that
can result in fatal injuries.
INFORMATION!
• The inputs/outputs must be connected passively or actively or acc. to EN 60947-5-6.
• Active operating mode: the signal converter supplies the power for operation (activation) of
the subsequent devices, observe max. operating data.
• Terminals that are not used must not have any conductive connection to other electrically
conductive parts.
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4.9.2 Current output
DANGER!
All work on the electrical connections may only be carried out with the power disconnected.
CAUTION!
To avoid damage or destruction of the device always note the following items:
• Observe the connection polarity!
• Note the properties of the current output; for further information refer to Technical data on
page 78.
INFORMATION!
Assembly materials and tools are not part of the delivery. Use the assembly materials and tools
in compliance with the applicable occupational health and safety directives.
Connection diagram of current output (active)
Figure 4-4: Current output (active)
The terminals for the connection of the two current outputs are located on the mainboard.
Please refer to the following diagram for proper connection of the cables.
Figure 4-5: Connection current output
1 Current output A
2 Current output B
INFORMATION!
The correct connection of the current outputs takes place with the help of shielded signal cables
which are approved for the rated current and voltage.
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INFORMATION!
All cables must have a test voltage of min. 2 kV and an appropriate outer insulation (additional to
the insulation of the individual wire) . The outer insulation should be removed 30...50 mm /
1.18...1.97 inch. The minimum allowed cross section of the wires is 0.5 mm2 / 20 AWG and the
maximum is 1.5 mm2 / 16 AWG.
INFORMATION!
In order to assure proper sealing of the cable feedthrough only cables with a diameter between
6...12 mm / 0.24...0.47 inch should be used.
• Open the cable drum and electronic compartment door.
• Push the prepared cables through the cable feedthrough and route them to the electronic
compartment (for more information refer to Overview of cable connections on page 30).
• Connect the positive and negative lead according to the connection diagrams above.
• Connect the shield to one side only (e.g. to the protective earth on the mainboard next to the
relay) side.
• Tighten the screw connection of the cable feedthrough securely.
• Seal all cable feedthrough that are not needed with a plug.
• Close both compartment doors
4.9.3 Electrical connection of control inputs
DANGER!
All work on the electrical connections may only be carried out with the power disconnected.
CAUTION!
To avoid damage or destruction of the device always note the properties of the control input; for
further information refer to Technical data on page 78.
INFORMATION!
Assembly materials and tools are not part of the delivery. Use the assembly materials and tools
in compliance with the applicable occupational health and safety directives.
INFORMATION!
All cables must have a test voltage of min. 2 kV and an appropriate outer insulation (additional to
the insulation of the individual wire) . The outer insulation should be removed 30...50 mm /
1.18...1.97 inch. The minimum allowed cross section of the wires is 0.5 mm2 / 20 AWG and the
maximum is 1.5 mm2 / 16 AWG.
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Figure 4-6: Control input
1 Signal
The terminals for the connection of the three control inputs are located on the mainboard.
Please refer to the following diagram for proper connection of the cables.
Figure 4-7: Connection control input
1 Control input (CI1)
2 Control input (CI2)
3 Control input (CI3)
Connecting the control inputs
• Open the cable drum and electronic compartment door.
• Push the prepared cables through the cable feedthrough and route them to the electronic
compartment (for more information refer to Overview of cable connections on page 30).
• Connect the positive and negative lead according to the connection diagrams above.
• Connect the shield to one side only e.g. on PCS (process control system) side.
• Tighten the screw connection of the cable feedthrough securely.
• Seal all cable feedthroughs that are not needed with a plug.
• Close both compartment doors.
INFORMATION!
In order to assure proper sealing of the cable feedthrough only cables with a diameter between
6...12 mm / 0.24...0.47 inch should be used.
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4.10 Description and properties of the relays
DANGER!
Never install or operate the device in potentially explosive areas, it might cause an explosion that
can result in fatal injuries.
The electrical properties of the relays in detail are the following:
Maximal external voltage (Uext)
24 VDC / 250 VAC
Maximal current (I)
K1 / K2 ≤ 1 A
K3 ≤ 0.3 A
The devices contains 3 relays. Two relays (K1 &K2) can be either configured as limit switch or as
status output. The third relay (K3) is reserved for the pump controller of the cleaning unit.
Status output:
If an error of the selected class occurs the relays remains active, until the error is cleared by the
user or the device is leaving the error state automatically.
Limit switch:
When the relay is configured as limit switch the limit parameter used is the sensor position
(height / depth). The relays can work as limit switch only in level and zone tracking mode. The
parameter "direction" defines the trigger for the relay, which means the relay is switched either
when the sensor position about limit value or the sensor position below limit. The hysteresis
defines the sensor position, where the limit switch (relay) is reset, relatively to the selected
threshold. Combining the parameters threshold and hysteresis a range can be defined, where
the limit switch is active. The relay configuration menus can be found in the setup I/O menu. For
more information refer to Menu C, setup on page 53.
Pump controller:
The pump in the clear water phase of the sedimentation basis can be controlled. The pump
connector should be connected to the device only if the external pump is used to transport the
cleaning medium. A pump lead time, programmable via menu, can be used to delay the sensor
cleaning process until pump system pressure has been setup.
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4.10.1 Connection of the relays
DANGER!
Never connect an external water pump directly to the sludge level meter connector K3, the
output connector is only specified as a control output for a motor protection.
DANGER!
All work on the electrical connections may only be carried out with the power disconnected.
INFORMATION!
Assembly materials and tools are not part of the delivery. Use the assembly materials and tools
in compliance with the applicable occupational health and safety directives.
INFORMATION!
The correct connection of the relays may only be ensured by using signal cables which are
approved for the rated current and voltage.
INFORMATION!
All cables must have a test voltage of min. 2 kV and an appropriate outer insulation (additional to
the insulation of the individual wire). The outer insulation should be removed 40 mm / 1.57". The
minimum cross section of the wires is 1.5 mm2 / 16 AWG and the maximum is 2.5 mm2 / 12 AWG.
INFORMATION!
In order to assure proper sealing of the cable feedthrough only cables with a diameter between
6...12 mm / 0.24...0.47 inch should be used.
The terminals for the connection of the two relays (K1 & K2) are located on the mainboard.
Please refer to the following diagram for proper connection of the cables.
Figure 4-8: Connection diagram of relays K1 and K2
1 LED
2 Voltage source
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The pump connector should be only connected to the OTPISYS SLM 2100 if the external pump is
used as cleaning medium. The terminal connection is outlined in the following diagram.
Figure 4-9: Connection diagram pump (K3)
1 External voltage
2 PTC resistance (Imax = 0.3 A)
For installation of the relays follow the steps below:
• Move the sensor by using the manual operation in the home position and turn off the power of
the instrument.
• Open the cable drum and electronics compartment doors.
• Push the prepared cables through the cable feed through and route them to the electronic
compartment.
• Connect the positive and negative lead according to the connection diagrams above.
• Connect the shield to one side only e.g. on PCS (process control system) side.
• Tighten the screw connection of the cable entries securely.
• Seal all cable entries that are not needed with a plug.
• Close both compartment doors.
4.11 Protection category
DANGER!
Do not install the sludge blanket meter in hazardous areas, it can ignite explosive gases!
IP 68 (sensor), IP 54 (electronic compartment), IP 44 (cable drum compartment).
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OPERATION 5
OPTISYS SLM 2100
5.1 Start-up and general remarks for configuration
DANGER!
In order to avoid injuries or damage of the device or plant equipment the device shall only be
operated with both doors properly closed and locked. The device also has to be properly
mounted and all cable feedthroughs have to be properly tightened or plugged, if unused.
WARNING!
In general, the device may only be installed, commissioned, operated and maintained by properly
trained and authorised personnel.
WARNING!
To avoid damages to the equipment please make sure that power up of the meter takes place
above 0°C / +32°F. Once power is connected, the internal heater will than keep the electronics
from freezing.
WARNING!
The device starts up / restarts automatically as soon the power is switched on.
INFORMATION!
If the ambient temperature is below 4°C / +39°F, keep the sensor in the medium to avoid
attachment of ice on sensor. Set start position 30 cm / 1 ft below the water surface.
INFORMATION!
Ensure that the sensor transportation protection is removed before starting-up the system.
INFORMATION!
To install the meter in the best way, follow the steps described below.
Steps for starting up the device:
• Switch the power on
• Configure the device
• Start measurement
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5.2 Switching on the power
DANGER!
To avoid fatal injuries as well as destruction or damage of the device assure a correct installation
before switching on the power. This includes:
• The device is mechanically safe, mounting and power connection comply with the regulations.
• Both doors need to be closed and locked.
• The electrical operating data of the power supply comply with the requirements of the device.
CAUTION!
Installation, assembly, start-up and maintenance may only be performed by appropriately
trained personnel. The regional occupational health and safety directives must always be
observed.
INFORMATION!
The manufacturer delivers the device preconfigured and ready for operation. Due to the physics
of the measurement, the operator has to perform an onsite calibration or an adjustment to the
environmental conditions at the initial start-up.
Switch on the power
The device performs a self-test and calibrates the home position of the sensor. For this the
sensor is moved inside the meter until it finds the home position. Afterwards the meter is ready
for measurement. The display shows 00.0 as values. If this is the first time the device is switched
on, it needs to be configured as described in the following chapters.
Figure 5-1: The previous drawing shows the measured value after successful start-up
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OPERATION 5
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5.3 Operating elements
The operation elements consist of the four operation keys below the display. In the texts of this
documentation each operation key has a specific symbol:
Operating key
Symbol in text
The function of a key depends on the mode of the device and on the menu level:
Key
Measuring mode
Menu mode
Main menu
level
Sub-menu or
function level
Parameter and
data level
>
Switch from measuring mode to
menu mode; press key for
2.5 seconds (display shows "keep
key pressed" and countdown) and
release it within further
2.5 seconds (display shows
"release key now" and
countdown)
Access to
displayed menu,
then 1st
submenu is
displayed
Access to
displayed submenu or function
Numerical
values: move
cursor one
position to the
right
^
Reset of the display controller
Return to
measuring mode
(prompt appears
whether the data
should be saved)
Return to next
higher level or
sublevel, data
are saved
Return to submenu or
function, data
are saved
↑ or ↓
Switch between measuring pages Select menu,
moving up or
down
Select sub-menu
or function,
moving up or
down
Change
parameter/data
marked by the
cursor, move the
decimal point
Esc: > + ↑
No function
No function
Return to main
menu level, data
not saved
Return to next
higher level, data
not saved
↓
Starting measurement cycle
manually and press key for 2.5
seconds (display shows "keep
key pressed" and countdown) and
release it within further 2.5
seconds (display shows "release
key now" and countdown)
No function
No function
No function
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5 OPERATION
OPTISYS SLM 2100
INFORMATION!
• Always push the keys at right angles to the front. Touching them from the side can cause
incorrect operation!
• After 5 minutes of inactivity in the menu mode, there is an automatic return to the measuring
mode. In this case the device does not save previously changed data!
5.4 Measuring page
After switching on the power, the display always shows the measuring page. Right beside all
measuring results you see the corresponding unit at the end of the line. Only if there is no unit
available it is left out (this is only the case with the diagnosis values).
The following drawing shows an example of the measuring page in the measuring mode "Level":
Figure 5-2: Example of the measuring page
Pressing ↑ will bring you to the status page.
If profile mode is applied, a second measuring page can be chosen, presenting the profile of the
measurement as bar plot.
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OPERATION 5
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5.4.1 Navigating through the menus
To switch from the measuring mode to the menu mode you have to execute the following steps:
• Press > for at least 2.5 seconds (meanwhile the display shows the text "keep key pressed" and
a time counting back).
• After 2.5 seconds release the pressed key (you have to do this within the next 2.5 seconds
during which the display shows the text "release key now" and a time counting back).
i You are in the main menu level of the menu mode. The display always looks as follows:
Display in main menu level
Figure 5-3: Example for selection in main menu level
1
2
3
4
5
6
Indicates a possible status message in the status list (only if there are one or more messages)
Menu code of selected menu item (see table of menu structure or function tables)
Indicates position within the current item list
Next menu item, reachable by pressing ↓ (if "- - -" in this line indicates, this signalises the end of the list)
Selected menu item in bold characters
Previous menu item, reachable by pressing ↑ (if "- - -" in this line indicates, this signalises the beginning of the list)
The main menu mode consists of the main menus "quick setup", "test", "setup" and "service".
You can either leave the main menu level and return to the measuring mode or choose and enter
a main menu:
• Press ^ to return to the measuring mode (in this case a prompt appears and asks if you want
to save the changed data; choose "Yes" or "No" using ↓ or ↑ and confirm by pressing ^).
• If you do not want to leave the main menu level, press > to enter the first main menu
("quick setup") or choose another main menu using ↑ or ↓ and enter it by pressing >.
i You are in the submenu level. The display always looks as follows:
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5 OPERATION
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Display in submenu level
Figure 5-4: Example for selection in submenu level
1 Indicates a possible status message in the status list (only if there are one or more messages)
2 Superior main menu
3 Menu code of selected menu item (see table of menu structure or function tables); up to two figures can appear right
beside the character indicating the main menu (one if you are on the first submenu level and two on the second submenu level)
4 Indicates position within the current item list
5 Next menu item, reachable by pressing ↓ (if "- - -" in this line indicates, this signalises the end of the list)
6 Selected menu item, in bold characters
7 Currently setting of the chosen menu item in bold character
8 Previous menu item, reachable by pressing ↑ (if "- - -" in this line indicates, this signalises the beginning of the list)
The submenu level consists of the first and second submenu level. The principle of choosing a
menu item is always the same:
• Press > to enter the first menu item or choose another menu item using ↑ or ↓ and enter it by
pressing >.
i You navigate through the tree structure of the submenu level, finally you always reach the
parameter or data level.
• If you want to return to the main menu level without saving the input, press > and ↑ at the
same time.
• If you want to return to the main menu level and save your input, press ^ one or more times
depending on the level you are (pressing ^ results in moving one level upwards until you
reach the main menu level).
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INFORMATION!
Like the lowest menu level (i.e. the parameter or data level) some submenus also offer the
possibility to make adjustments. The procedure is similar to the procedure on the parameter
level.
On the parameter level you see a list with one or more parameters or data. You can scroll
through this list using ↑ or ↓:
INFORMATION!
In this list all parameters or data which have been changed (i.e. they deviate from the default
setting) have a check mark at the right end of their line (see position number 4 in the following
drawing).
Display with list of parameters or data
Figure 5-5: Example of a list with parameters and data
1
2
3
4
5
6
7
8
9
Indicates a possible status message in the status list (only if there are one or more messages)
Superior submenu or subsequent submenu
Menu code of selected parameter (see table of menu structure or function tables)
Denotes the change of a parameter (this marking allows to simply and quickly identify all data which differ from the
default setting when browsing through the list); instead of the check mark there can also appear a lock symbol at this
position, it indicates a parameter that cannot be changed because of the parameter lock on the front.
Indicates position within the current item list
Next menu item, reachable by pressing ↓ (if "- - -" in this line indicates, this signalises the end of the list)
Currently setting of the chosen menu item
Selected menu item, in bold characters
Previous menu item, reachable by pressing ↑ (if "- - -" in this line indicates, this signalises the beginning of the list)
On the parameter or data level you have the possibility to change the decimal point, numbers,
units or settings. Before that you have to choose the desired parameter or data and open to edit
it as follows:
• Press > to open and edit the first list item or choose another item using ↑ or ↓ and press >.
i You are in the parameter edit mode now. All changeable values are highlighted and shown
reverse (if nothing is shown reverse, you are in the read-only view and you cannot change
the setting).
• Use ↑ or ↓ to change the highlighted area; if there are numerical values or a decimal point to
be changed, you can move the cursor with > to the desired position and change its value
using ↑ or ↓.
• If you want to return to the parameter or data list and save your input, press ^; afterwards you
can press ^ one or more times to return to the main menu.
• If you want to return to the next higher level without saving the input, press > and ↑ at the
same time.
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Display with parameter or data ready to edit
Figure 5-6: Example of parameter or data ready to edit
1
2
3
4
5
6
7
8
9
50
Indicates a possible status message in the status list (only if there are one or more messages)
Superior submenu or subsequent submenu
Menu code of selected parameter (see table of menu structure or function tables)
Symbol denotes that there is a factory setting
Symbol denotes that there is a permissible value range
Permissible value range (for numerical values)
Currently set value, unit or function that you can change (always appears with highlighted background)
Current selected parameter
Factory setting of parameter (non-alterable)
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5.5 Menu mode structure
INFORMATION!
The following table just presents an overview. When programming the device, always consult the
function tables additionally as they contain further information!
Measuring Main menu
mode
Submenu
Parameter
3 or 4
pages,
scrolling
with ↓ or ↑
> A1 language
^ A2 set clock
A3 reset errors
A4 measuring
function
> For further
^ information
see function
tables.
> 2.5 s A quick setup
^
↓↑
> 2.5 s B test
^
↓↑
> B1 simulation
^
> 2.5 s C setup
^
> B1.1 current out A
^ B1.2 current out B
B1.3 relay 1
B1.4 relay 2
B1.5 cleaning
B2 actual values
B2.1 operating hours
B2.2 ADC value
B2.3 sensor temperature
B2.4 electr. temperature
B2.5 sensor voltage supply
B3 logbooks
B3.1 status log
B4 information
B4.1 device serial no.
B4.2 mainboard
B4.3 sensor electronic
B4.4 display
↓↑
3 or 4
pages,
scrolling
with ↓ or ↑
↓↑
↓↑
> C1 measuring
^
↓↑
> C1.1 measuring function
^ C1.2 measuring mode
C1.3 definition fluff
C1.4 def. sludge blanket
C1.5 hysteresis
C1.6 tracking time
C1.7 tracking position
C1.8 start signal
C1.9 timer interval
C1.10 units
C2 maintenance
C2.1 calibration
C2.2 ref position calib.
C3 I/O
C3.1 current out A
C3.2 current out B
C3.3 control input 1
C3.4 control input 2
C3.5 control input 3
C3.6 relay 1
C3.7 relay 2
C4 extended
setup
C4.1 maximum depth
C4.2 start position
C4.3 blind zone
C4.4 current incl. blind zone
C4.5 rake height
C4.6 cleaning
C5 device
C5.1 device info
C5.2 display
C5.3 special functions
↓↑
> For further
^ information
see function
tables.
↓↑
> For further
^ information
see function
tables.
D service: This menu is password protected and contains functions to be used by service
personnel only.
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5.6 Function tables
5.6.1 Menu A, quick setup
A1, language
Language selection (depends on the region for which the device has been ordered). Available languages: Deutsch,
English, Français, Español
A2, set clock
Manual setting of date and time.
A3, reset errors
This functions allows to reset all errors that are not reset automatically (e.g. motor blocked). You can answer the
question "reset?" with the following options: no (exit without reset) / yes (reset and exit the function).
A4, measuring function
This menu shows the different measurement functions of the sludge level meter. Choose between: "level", "profile",
"zonetracking" and "manual operation". For further information refer to Measuring function on page 61.
5.6.2 Menu B, test
The procedure to start the simulation process is the same for all functions:
• Choose the function using ↑ or ↓ and press >.
i You see the two options set value (opens the editor to enter the simulation value) and break
(exit the menu without simulation).
• Choose the desired option using ↑ or ↓ and press >.
If you choose break you will exit the menu without simulation. If you chose set value
value, the
device asks start simulation and offers the options no (exit the menu without simulation) or
yes (starts the simulation finally).
i
• Choose the desired option using ↑ or ↓ and press >.
If you choose yes,
yes the simulation starts. If you choose no,
no you will exit the menu without
simulation.
i
B1, simulation
Menu level Designation / function
Settings / descriptions
This menu groups several functions to simulate the input and output values. The procedure to start the simulation
process is the same for all functions.
B1.1
current out A
B1.2
current out B
B1.3
relay 1
B1.4
relay 2
B1.5
cleaning
Allows simulation of the corresponding value. It might be useful during
installation.
B2, actual values
Menu level Designation / function
Settings / descriptions
This menu groups several functions which allow to display the corresponding actual reading.
B2.1
52
operating hours
This menu shows the operating time of the devices in hours.
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Menu level Designation / function
Settings / descriptions
B2.2
ADC value
This menu shows the raw ADC value of the sensor.
B2.3
sensor temperature
This menu shows the actual temperature of the sensor.
B2.4
electr. temperature
This menu shows the actual temperature of the mainboard.
B2.5
sensor voltage
This menu shows the actual voltage of the sensor in volt.
B3, logbooks
Menu level Designation / function
Settings / descriptions
This menu groups several functions which allow to display the corresponding actual reading.
B3.1
status log
Log for information, errors and warnings.
B4, information
Menu level Designation / function
Settings / descriptions
This menu groups several other menus which contain device specific information.
B4.1
device serial no.
B4.2
mainboard
B4.3
sensor electronic
B4.4
display
This menu shows the serial number of the device.
This menu gives information about the mainboard.
• First line: ID No. of the circuit board
• Second line: software version
• Third line: production date
This menu gives information about the sensor electronic.
• First line: ID no. of the sensor
• Second line: software version
• Third line: production date
This menu gives information about the display.
• First line: ID no. of the sensor
• Second line: software version
• Third line: production date
5.6.3 Menu C, setup
C1, measuring
Menu level Designation / function
Settings / descriptions
This menu groups several other menus in which the measuring functions can be set.
C1.1
measuring function
This menu shows the different measurement functions: "level", "profile",
"zonetracking" and "manual operation". For further information refer to
Measuring function on page 61
C1.2
measuring mode
This menu shows the different measurement modes of the level
measurement and can be switched from "depth" to "height".
C1.3
definition fluff
This menu shows the concentration of the fluff and can be set (this menu is
displayed only if "level" or "manual operation" is selected in C1.1).
Default: 0.5 g/l
C1.4
def. sludge blanket
This menu shows the concentration of the sludge blanket and can be set
(this menu is displayed only if "level", "zonetracking" or "manual operation"
is selected in C1.1). Default: 5 g/l
C1.5
hysteresis
This function allows to set the hysteresis value of the zone tracking mode.
(this menu is displayed only if "zonetracking" is selected in C1.1).
Range: 0…5 g/l; Default: 0 g/l
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Menu level Designation / function
Settings / descriptions
C1.6
tracking time
Definition of the time period the sensor is remaining in parking position,
when elapsed the sludge level will be tracked again (this menu is displayed
only if "zonetracking" is selected in C1.1).
Range: 20…999 seconds; Default: 30 seconds
C1.7
tracking position
Definition of the relative parking position of the sensor above the sludge
level (this menu is displayed only if "zonetracking" is selected in C1.1).
Range: 0.05...0.3 m; Default: 0.15 m
C1.8
start signal
This menu shows the start signal for the measurement and can be set to
"Timer" (via build in timer) or "Trigger input" (via external switch on control
input 1 and/or 2). This menu is displayed only if "level" or "profile" is
selected in C1.1
C1.9
timer interval
This menu shows the timer interval for starting the measurement and can
be set in minutes (this menu is displayed only if "timer" is selected in C1.8.
and "level" or profile in C1.1). Range: 1...999 min; Default: 10 min
C1.10
units
This menu groups several functions to define the units of the measuring
results. These units are used for all values of the related unit group on the
display (measuring screen and parameters).
C1.10.1
height / depth
This function allows to define the unit for level measurement.
Options: m, feet, inch, cm
C1.10.2
temperature
This function allows to define the temperature unit. Options: °C, °F, K
C1.10.3
concentration
This function allows to define the concentration unit. Options: g/l, mg/l
C2, maintenance
Menu level Designation / function
Settings / descriptions
This menu groups several other menus in which the maintenance functions can be set.
C2.1
calibration
In this menu the concentration measurement can be calibrated. For further
information refer to Calibration on page 65.
C2.2
ref. position calib.
In this function the reference point calibration of the height / depth
measurement can be set. Depending on the application this might be
necessary due to dirt accumulation on the cable.
Options: off or time interval
Default: off
C2.2.1
activation
This function allows to activate the ref. position calibration.
Options: off or timer interval
Default off
C2.2.2
timer interval
Timer interval of reference point calibration. This menu is only displayed if
"time interval" is selected in C 2.2.
Range: 2...999 hours
Default: 1 hour
C3, I/O
Menu level Designation / function
Settings / descriptions
This menu groups several other menus in which the I/O functions can be set.
C3.1
current out A
Settings of the corresponding current output. In height/depth mode, the
current output is calculated automatically.
C3.1.4
height / depth 4 mA
Indicates the height/depth for 4 mA, calculated based on entered basin
geometries - read only
C3.1.5
height / depth 20 mA
Indicates the height/depth for 20 mA, calculated based on entered basin
geometries - read only.
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Menu level Designation / function
Settings / descriptions
C3.1.6
error current
This function allows to define the current which indicates the error
condition. Range: 3...22 mA (condition: outside of extended range);
Default: 21.5 mA
C3.1.7
error condition
C3.1.8
time constant
Range: 0...500 seconds; Default: 0 seconds
C3.2
current out B
Refer to submenus of current output A). Settings of the corresponding
current output. In height/depth mode, the current output is calculated
automatically.
C3.2.4
height / depth 4 mA
Indicates the height/depth for 4 mA, calculated based on entered basin
geometries - read only (this menu is displayed only if "level" is selected in
C1.1).
C3.2.5
height / depth 20 mA
Indicates the height/depth for 20 mA, calculated based on entered basin
geometries - read only (this menu is displayed only if "level" is selected in
C1.1).
C3.2.4
concentration 4 mA
Definition of the sludge concentration at 4 mA (this menu is displayed only if
"profile" or "zonetracking" is selected in C1.1). Range: 0...10 g/l; Default:
0 g/l
C3.2.5
concentration 20 mA
Definition of the sludge concentration at 20 mA (this menu is displayed only if
"profile" or "zonetracking" is selected in C1.1).
Range 0...100 g/l; Default: 10 g/l
C3.2.6
error current
Definition of the current which indicates the error condition.
Range: 3...22 mA (condition: outside of extended range); Default: 21.5 mA
C3.2.7
error condition
C3.2.8
time constant
Range: 0.1…500 seconds; Default: 0 seconds
C3.3
control input 1
Settings of the corresponding control input.
C3.3.1
mode
C3.3.2
Invert signal
This function allows to define how the control input is activated. Options: off
(control input is activated when the contact get closed at the input), on
(control input is activated when the contact is opened at the input).
C3.4
control input 2
Refer to submenus of control input 1 (all submenus and options are
identical, except that they start with C3.4).
C3.4.1
mode
This function allows to define the different modes of the corresponding
control input.
Options:
• off
• rake guard
• trigger input
C3.4.2
invert signal
This function allows to define how the control input is activated.
Options:
• off (control input is activated when the contact is closed at the input)
• on (control input is activated when the contact is opened at the input)
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This function allows to define the indicated error categories.
Options:
• error in device: only errors of category F
• application error: errors of category F
• out of specification: errors of category S
• off
This function allows to define the indicated error categories
Options:
• error in device: only errors of category F
• application error: errors of category F
• out of specification: errors of category S
• off
This function allows to define the different modes of the corresponding
control input.
Options:
• off
• rake guard
• trigger input
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Menu level Designation / function
Settings / descriptions
C3.5
control input 3
Settings of the corresponding control input.
C3.5.1
mode
This function allows to define the different modes of the corresponding
control input.
Options:
• off
• maintenance
C3.5.2
invert signal
This function allows to define how the control input is activated.
Options:
• off (control input is activated when the contact is closed at the input)
• on (control input is activated when the contact is opened at the input)
C3.6
relay 1
Settings of the corresponding relay.
C3.6.1
mode
This function allows to set the relay as "off", "status output" or "limit
switch".
C3.6.2
inversion
C3.6.3
status
This function allows to set the status as "error in device", "application error"
or "out of specification" (this menu is displayed only if "status output" is
selected in C3.6.1).
C3.6.3
threshold
This function allows to specify a threshold value of the sludge level (this
menu is displayed only if "limit switch" is selected in C3.6.1). Default 1 meter
C3.6.4
hysteresis
This function allows to specify a hysteresis value of the sludge level (this
menu is displayed only if "limit switch" is selected in C3.6.1). Default 0 meter
C3.6.5
direction
This function can define if the limit switch is set as above or below the
threshold value (this menu is displayed only if "limit switch" is selected in
C3.6.1).
C3.7
relay 2
Settings of the corresponding relay (all submenus and options are identical
with relay 1, except that they start with C3.7 instead of C3.6).
This function allows to define how the relay is activated.
Options:
• off (control input is activated when the contact is closed at the input)
• on (control input is activated when the contact is opened at the input)
C4, extended setup
Menu level Designation / function
Settings / descriptions
This submenu allows to set the initial parameters for commissioning of the meter.
C4.1
C4.2
C4.3
C4.4
C4.5
C4.6
56
maximum depth
start position
blind zone
current incl. blind zone
rake height
cleaning
Definition of the maximum depth.
Default: 0 meter
For further information refer to
Definition of positions and zones on
page 59
Definition of the start position.
Default: 0 meter
For further information refer to
Definition of positions and zones on
page 59
Definition of the blind zone. Default:
0 meter
Definition if blind zone is included in
the current output calculation of
height/depth. Default: no
Definition of the rake height. Default:
0 meter
For further information refer to
Definition of positions and zones on
page 59
For further information refer to
Definition of positions and zones on
page 59
For further information refer to
Definition of positions and zones on
page 59
Settings of the cleaning unit.
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Menu level Designation / function
Settings / descriptions
C4.6.1
activation
This function allows to activate cleaning:
Options:
• off
• time interval
• counter interval
C4.6.2
time interval
This menu defines the time of the cleaning intervals (this menu is displayed
only if timer interval is selected in C4.6.1).
Range: 10…999 min; Default: 60 min
C4.6.3
counter interval
This menu defines the number of measurement cycles between cleaning
(this menu is displayed only if counter interval is selected in C4.6.1).
Range: 1...99; Default: 1
C4.6.4
Pump lead time
Definition of pump lead time (this menu is displayed only if "time interval" or
"counter interval" is selected in C4.6.1).
Range: 0…120 seconds Default: 0 seconds
C4.6.5
Cleaning cycle
In this menu the number of cleaning cycles during one cleaning step can be
set (this menu is displayed only if "time interval" or "counter interval" is
selected in C4.6.1). Range: 0…100; Default: 0
C4.6.6
External pump
This menu defines if the external pump is controlled by the relays K3 (this
menu is displayed only if "time interval" or "counter interval" is selected in
C4.6.1). Options: "yes" or "no"
C5, device
Menu level Designation / function
Settings / descriptions
This menu groups all functions that have no effect on the measurement or any output directly.
C5.1
device info
Information about the device.
C5.1.1
device serial no.
This menu shows the serial number of the device.
C5.1.2
mainboard
C5.1.3
sensor electronic
C5.1.4
display
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This menu gives information about the mainboard.
• First line: ID no. of the circuit board
• Second line: software version
• Third line: production date
This menu gives information about the mainboard.
• First line: ID no. of the sensor
• Second line: software version
• Third line: production date
This menu gives information about the display.
• First line: ID no. of the sensor
• Second line: software version
• Third line: production date
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C5.2
display
This menu allows to adjust the contrast and the language of the display.
C5.2.1
language
Refer to A1 "language".
C5.2.2
contrast
This function allows to adjust the contrast of the display (at extreme
temperatures; below -25°C / -13°F may affect the readability of the display).
Note that a change of the contrast takes place immediately, not just when
the menu mode is left! You cannot reset a change when leaving the
programming mode without saving the changes! Range: -9...+9; Default: 0
C5.3
special functions
This menu groups several special functions.
C5.3.1
reset errors
Refer to A3 "reset".
C5.3.2
password quick set
This function allows to define and activate a password for the access to the
quick setup menu. Options: XXXX (if you enter four digits in the range of
0001...9999, then the password protection is enabled) / 0000 (password
protection disabled).
C5.3.3
password setup
This function allows to define and activate a password for the access to the
setup menu. Options: XXXX (if you enter four digits in the range of
0001...9999, then the password protection is enabled) / 0000 (password
protection disabled).
5.7 Functions in detail
This chapter helps with the initial parametrisation of the device and with change of settings in
detail during operation.
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5.7.1 Definition of positions and zones
Figure 5-7: Definition of zones and positions
1 Home position: this position marks the home (or zero point position) of the sensor. After any change of the settings, a
zero point calibration for the level measurement is initiated; the sensor will always return to this position. Additionally
zero point calibration can also be performed by setting a time interval.
2 Start position: this marks the position of sensor in which the sensor starts from and returns to during operation.
3 Blind zone: in this zone the concentration measurement is not active, in order to avoid wrong measurements due to
sunlight or other interferences, before the sensor is immersed into the water. You can prevent unwanted measurement by setting this zone to be 0.3 m / 1 ft below the normal liquid surface.
4 Maximum immersion depth: this is the maximum distance from the home position. The sensor will stop at this depth
if it detects no sludge. Note: the sensor might stop and return at a shorter distance if a rake height is set.
5 Measuring zone: in this zone the sensor delivers its measuring results and the output signal varies from 4...20 mA.
Note! In case that no start position is set, the measuring zone equals the maximum depth. Depending on the settings
the blind zone can either be in- or excluded in the calculation of the current output.
6 Measuring range: distance from liquid surface to bottom of the tank.
7 Fluff layer: fluff or sludge cloud. The concentration has to be set as “fluff”.
8 Sludge blanket: the concentration has to be set as “sludge blanket”.
9 Bottom rake zone: here a possibly existing bottom rake operates. The top of this zone is the height where the sensor
always has to stop during lowering to avoid hitting the bottom rake. This has to be set as rake height in the menu.
10 Floating sludge: sludge which floats on the surface. To avoid wrong measurements the blind zone has to be set below
the floating sludge.
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5.7.2 Initial configuration in extended settings
Before start of the operation a few important entries have to be made at the measuring device.
For further information refer to Definition of positions and zones on page 59. These settings will
also automatically scale the 4...20 mA outputs. Execute the following steps before starting the
first measurement:
First step: Change the working mode
• Change the measuring function to manual operation and lower the sensor by using the arrow
keys.
Second step: Find out the distances
• Lower the sensor head 0.3 m / 1 ft below the liquid surface and note the level as the blind
zone. Lower the sensor further until it reaches the bottom of the tank. (You can identify this
point by watching the cable got slack.) Pull up the sensor until you have about 5 cm / 2" of
clearance between the bottom of the clarifiers and the sensor. Note the level as the maximum
depth.
Third step: Entering the distances
• Select the menu “Extended setup” and enter blind zone and max. depth.
• If rake is present you can go to the option rake height and enter the value.
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OPERATION 5
OPTISYS SLM 2100
5.7.3 Measuring function
In the menu point C1.1 the measuring function can be selected. There are 4 different settings:
1. Level:
Level In this mode the level of sludge blanket and fluff is monitored. Thus the meter measures
the height / depth of two distinctly different concentrations simultaneously. The two heights
from the last measurement cycle are held at the current outputs of the device and are updated
at the end of every further cycle. This mode is primarily used to control the sedimentation and
the sludge washout.
2. Profile
Profile: The profile measurement gives a broad overview about the sedimentation process from
the surface to the bottom of the sedimentation tank. This function allows to create a sludge level profile concentration in g/l versus position. When the mode is selected a third measurement
result page can be displayed. On this measurement page a graphical representation of the
measured sludge level profile is shown which gives a general overview of the collected information. This function is regularly used during configuration of the instrument. In this mode, the
time constant of the analogue outputs and the input at the PLC should be zero to get the profile
in real time without any shifts.
3. Zone tracking:
tracking This menu is primarily used in processes observing the sedimentation level continuously (e.g. sludge abstraction) with high time resolution. The zone tracking mode allows to
track a defined sludge level, thus the sensor will remain in the process in a defined parking position above the sludge concentration. The tracking is time controlled. When the tracking time
elapses the sensor will be moved down and the sludge level searching will be repeated. When
the sludge level has been found the sensor is moved back to the parking position again. When
the sludge level is increasing and is reaching the sensor, its position will be moved up until the
sludge concentration drops below the user defined limit. Starting from this position the sludge
level will be tracked again.
4. Manual operation:
operation The manual operation can be either selected by the menu or by switching
the limit switch. If set to manual operation, the sensor is reeled up out of the medium and no
longer react to any trigger (timer or control input). The two current outputs are "frozen" at the
last measurement value and the arrow keys on the keypad can be used to move the sensor
manually. This function is used for initial configuration and calibration of the device. It also
makes it easy to perform maintenance activities.
INFORMATION!
As soon the user enters the manual operation mode the current outputs are frozen. After
completion of the settings and return to normal measuring mode, the current outputs and
display are reset to "0". If the user needs an actual reading right away, please press ↓ to trigger
a manual measuring cycle.
Selection of measuring functions in menu C1.1
Press > for more than 2.5 seconds, then release the button.
Press ↓ or ↑ until the main menu setup is highlighted.
Press > to enter the chosen menu.
Press ↓ or ↑ to select measuring function.
function
Pres
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