Bühler technologies Nivotemp 61-0-WW-S6 User manual

Fluidcontrol
Installation and Operation Instructions
Original instructions
Level switch
Nivotemp 61-0-WW
BE100007
05/2022
Bühler Technologies GmbH, Harkortstr. 29, D-40880 Ratingen
Tel. [phone] / 49 89-0, Fax: [phone] / 49 89-20
E-Mail: [email protected]
Internet: www.buehler-technologies.com

Bühler Technologies GmbH, Harkortstr. 29, D-40880 Ratingen
Tel. [phone] / 49 89-0, Fax: [phone] / 49 89-20
Internet: www.buehler-technologies.com
E-Mail: [email protected]
Read this instruction carefully prior to installation and/or use. Pay at-
tention particularly to all advises and safety instructions to prevent in-
juries. Bühler Technologies can not be held responsible for misusing
the product or unreliable function due to unauthorised modifications.
All rights reserved. Bühler Technologies GmbH 2022
Document information
Document No..........................................................BE100007
Version.........................................................................05/2022

Nivotemp 61-0-WW
Contents
1 Introduction..................................................................................................................................................................................................................... 2
1.1 Intended Use.........................................................................................................................................................................................................2
1.2 Functionality......................................................................................................................................................................................................... 2
1.2.1 Liquid level monitoring ......................................................................................................................................................................2
1.3 Ordering instructions ........................................................................................................................................................................................ 2
1.4 Scope of Delivery.................................................................................................................................................................................................. 2
2 Safety instructions......................................................................................................................................................................................................... 3
2.1 Important advice................................................................................................................................................................................................. 3
2.2 General hazard warnings .................................................................................................................................................................................4
3 Transport and storage .................................................................................................................................................................................................. 5
4 Setup and connection...................................................................................................................................................................................................6
4.1 Installation ............................................................................................................................................................................................................6
4.2 Electrical Connections........................................................................................................................................................................................ 7
4.3 Information on the correct operation of reed contacts in Bühler level switches............................................................................. 7
4.4 Adjusting the level contacts.............................................................................................................................................................................8
5 Operation and control ................................................................................................................................................................................................ 10
6 Cleaning and Maintenance........................................................................................................................................................................................ 11
7 Service and repair..........................................................................................................................................................................................................12
8 Disposal............................................................................................................................................................................................................................13
9 Appendices..................................................................................................................................................................................................................... 14
9.1 Technical Data.................................................................................................................................................................................................... 14
9.2 Selecting the pin assignment ........................................................................................................................................................................ 14
9.3 Standard pin assignment ................................................................................................................................................................................15
9.4 Collecting basin dimensions (optional).......................................................................................................................................................17
10 Attached documents................................................................................................................................................................................................... 18
iBühler Technologies GmbHBE100007 ◦ 05/2022

Nivotemp 61-0-WW
1 Introduction
1.1 Intended Use
The level switches in the Nivotemp 61-0-WW series are used to monitor fill levels in tanks. These level switches are designed to
be installed on tank tops. The liquid level can be read on the scale. Up to four switching contacts or a Reed-contact also enable
electronic liquid level monitoring.
Different versions also allow for use in aggressive mediums.
Please note the technical data in the appendix for the specific intended use, existing material combinations, as well as temper-
ature limits.
WARNING
All device models are solely intended for industrial applications. They are not safety com-
ponents. The devices must not be used if failure or malfunction thereof jeopardises the
safety and health of persons.
Use in explosive areas is prohibited.
1.2 Functionality
1.2.1 Liquid level monitoring
The measuring tube is located inside the tank. The contacts are located inside the measuring tube. These are activated by a mag-
net inside the level switch float.
The level contacts are mounted to a perforated rail spaced as specified in the purchase order, but can be moved if necessary. The
contact for the water alarm is fixed in the lowest position and must not be adjusted.
1.3 Ordering instructions
Base version (without level and water alarm contacts)
Item no. Description Plug Total length
10 30 099 Nivotemp 61-0-WW-S6-Level contacts/water alarm contact S6 L (max. 1350 mm)
10 30 799 Nivotemp 61-0-WW-2xM12-Level contacts/water alarm contact 2xM12 L (max. 1350 mm)
10 30 899 Nivotemp 61-0-WW-C6F-Level contacts/water alarm contact C6F L (max. 1350 mm)
Item no. Description Number of contacts Type Spacing
18 89 999 Level contact K10 See plug connection table NC/NO L1 (, L2, L3, L4)
18 90 999 Level contact W11 See plug connection table Changeover contact L1 (, L2, L3, L4)
18 50 999 Water alarm contact K6 1 NC/NO solid
18 49 999 Water alarm contact W7 1 Changeover contact solid
Accessories:
Item no. Description
10 30 0991 Collecting basin (with G3/4 connection, including plug), dimensions ø70/2.6 x height = 133 mm
1.4 Scope of Delivery
– Level switch
– Product documentation
– Connection/mounting accessories (optional)
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2 Safety instructions
2.1 Important advice
Operation of the device is only permitted if:
– the product is used under the conditions described in the installation- and operation instruction, the intended application
according to the type plate and the intended use. In case of unauthorized modifications done by the user Bühler Technolo-
gies GmbH can not be held responsible for any damage,
– when complying with the specifications and markings on the nameplates.
– the performance limits given in the datasheets and in the installation- and operation instruction are obeyed,
– monitoring devices and safety devices are installed properly,
– service and repair is carried out by Bühler Technologies GmbH,
– only original spare parts are used.
This manual is part of the equipment. The manufacturer keeps the right to modify specifications without advanced notice. Keep
this manual for later use.
Signal words for warnings
DANGER
Signal word for an imminent danger with high risk, resulting in severe injuries or death if not avoided.
WARNING
Signal word for a hazardous situation with medium risk, possibly resulting in severe injuries or death if not
avoided.
CAUTION
Signal word for a hazardous situation with low risk, resulting in damaged to the device or the property or
minor or medium injuries if not avoided.
NOTICE
Signal word for important information to the product.
Warning signs
These instructions use the following warning signs:
Warns of a general hazard General information
Warns of voltage Wear respiratory equipment
Warns not to inhale toxic gasses Wear a safety mask
Warns of corrosive liquids Wear gloves
High pressure warning
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2.2 General hazard warnings
The equipment must be installed by a professional familiar with the safety requirements and risks.
Be sure to observe the safety regulations and generally applicable rules of technology relevant for the installation site. Prevent
malfunctions and avoid personal injuries and property damage.
The operator of the system must ensure:
– Safety notices and operating instructions are available and observed,
– The respective national accident prevention regulations are observed,
– The permissible data and operational conditions are maintained,
– Safety guards are used and mandatory maintenance is performed,
– Legal regulations are observed during disposal,
– compliance with national installation regulations.
Maintenance, Repair
Please note during maintenance and repairs:
– Repairs to the unit must be performed by Bühler authorised personnel.
– Only perform conversion-, maintenance or installation work described in these operating and installation instructions.
– Always use genuine spare parts.
– Do not install damaged or defective spare part. If necessary, visually inspect prior to installation to determine any obvious
damage to the spare parts.
Always observe the applicable safety and operating regulations in the respective country of use when performing any type of
maintenance.
The method for cleaning the devices must be adapted to the IP protection class of the devices. Do not use cleaners which could
damage the device materials.
DANGER Toxic, acidic gases/liquids
Protect yourself from toxic, corrosive gasses/liquids when performing any type of work.
Wear appropriate protective equipment.
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3 Transport and storage
Only transport the product inside the original packaging or a suitable alternative.
The equipment must be protected from moisture and heat when not in use. It must be stored in a covered, dry, dust-free room
at room temperature.
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4 Setup and connection
DANGER Electric voltage
Risk of electric shock
a) De-energise the system.
b) The equipment may only be installed, maintained and put into operation by instruc-
ted, competent personnel.
c) Always observe the applicable safety regulations for the operating site.
DANGER Toxic, acidic gases/liquids
Protect yourself from toxic, corrosive gasses/liquids when performing any type of work.
Wear appropriate protective equipment.
4.1 Installation
Please note before installing the level switch!
After transport and delivery of the level switch, the switching status of the bistable contacts may be different than required for
proper operation.
Therefore slide the float for the level switch along the level switch tube from below immediately before installation.
This ensures all built-in bistable contacts have a clearly defined switching status (NC or NO).
The level switches come fully assembled and can be mounted to the tank using the included screws and seals. Please be sure the
floats can move freely and to have enough space between the tank wall and add-ons.
This is particularly important for the bottom water alarm float when inserted in the collecting basin (optional) (also see installa-
tion principle). In this case, be sure to tighten the screws evenly so the level switch is not tilted (resulting in the bottom float tilt-
ing in the basin and not working).
After removing the float, where applicable, be sure the magnet inside the float is above the fluid level. This can easily be verified
with a piece of iron to determine the magnet position inside the float.
welded on collecting basin
with welded sleeve G3/4
min.130
Drain valve
(not included with
collecting basin)
Installation principle
min.ø65
(tank inside ø)
Oil
Water
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4.2 Electrical Connections
The device must be installed by an authorised professional familiar with the safety requirements and risks. Be sure to observe
the safety regulations and generally applicable rules of technology relevant for the installation site.
Please refer to the compatibility charts in the appendix for the pin assignment and the electrical data. Proceed as follows: Select
the plug type, contact type and number of contacts (per your order).
4.3 Information on the correct operation of reed contacts in Bühler level switches
Based on their construction, reed contacts are very long lasting and reliable components. Yet the following should be considered
when using them:
Life of reed switches
The life of reed switches can be up to 109 cycles. This is reduces by high stress and / or incorrect or the absence of protective cir-
cuits when switching inductive, capacitive or lamp loads.
It’s therefore important to ensure NEVER to exceed one or several of the maximum approved limits, even temporarily, and to
install a contact protective circuit for loads which are not purely ohmic. Using test lamps when installing the devices is also pro-
hibited, as these can temporarily allow too much current to flow, which can damage the reed contacts. In this case non-volatile
testing equipment should always be used.
Contact protective circuits for reed switches
For direct current voltage a recovery diode per figure A must be connected parallel to the contact.
For alternating current voltage an RC circuit per Figure B and Table 1 must be connected parallel to the contact.
A B
Load
Contact
Recovery diode
Load
Contact
RC circuit
Load in VA 10 25 50
Voltage at contact V R/Ohm C/µF R/Ohm C/µF R/Ohm C/µF
24 22 0.022 1 0.1 1 0.47
60 120 0.0047 22 0.022 1 0.1
110 470 0.001 120 0.0047 22 0.022
230 470 0.001 470 0.001 120 0.0047
Please note the max. voltage/load ratings of the respective level contacts!
Voltages and currents
All Bühler level contacts with reed switch can switch minimal Switching voltages of 10µV and minimal switching currents of
1µA.
The maximum values specified for the respective contact types apply.
Level contact with reed switches can therefore be used for SPS applications as well as for high loads (within the maximum lim-
its) without hesitation.
Contact material
All reed switches in Bühler level contacts use rhodium as the contact material for the actual contact areas.
Magnetic fields
Avoid external magnetic fields, including from electric motors. These can interfere with the function of the reed switches.
Mechanical loads
Do not expose the level switch to strong blows or bending.
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4.4 Adjusting the level contacts
The measurement contacts are mounted on a perforated rail inside the protective tube. These are arranged per order specifica-
tions but can be moved if necessary.
NOTICE
The water alarm contact is fixed to a specific measurement and cannot be adjusted!
Depending on the model, the perforated rail will also have electronic assemblies. These are positioned so they do not limit the
setting range of the contacts. Please be sure not to damage the assemblies during installation or removal.
For devices with 230 V mains voltage:
DANGER Electrical voltage
Electrocution hazard.
a) Disconnect the device from power supply.
b) Make sure that the equipment cannot be reconnected to mains unintentionally.
c) The device must be opened by trained staff only.
d) Regard correct mains voltage.
WARNING Fluids or gasses discharged at high pressure harmful to the environment or health
a) Depressurise the system/component prior to installation.
b) Drain the system/component in accordance with environmental regulations. Wear
suitable protective clothing.
– Disconnect the voltage supply.
– Loosen plug connections and connections!
– Unscrew the plug base.
– Carefully pull the perforated rail with contacts out the top.
NOTICE
On versions with earth wire, this is run as a loop and soldered to the protective tube
from the inside in the insertion direction. To prevent breaking off the earth wire it
should not be pulled all the way out.
– Mark the original contact position.
– Lock the contacts in place in the desired positions. Please note the minimum spacing!
We recommend marking the original contact position for checking purposes. The contacts can then be locked into place in the
desired position on the perforated rail. The contacts are installed as NO, NC or changeover based on the order. Since these are
bistable contacts, the contact function of the NO or NC contact can later be changed. To do so, simply turn the contacts 180°.
The contact symbols for NO and NC are marked on the housing. Below the respective symbol you will also see an arrow. The ar-
row, which points up when installed, indicates the respective contact function (see drawing).
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NO contact function
with rising level
NC contact function
with rising level
NC contact function
with falling level
NO contact function
with falling level
i.e.
i.e.
The contact logic assumes the level switch is installed in an empty tank, i.e. it is only in the operating position once filled.
After positioning the contacts, slide the perforated rail back into the protective tube. Please route the additional cable lengths
required to move the contacts as a loop and insert along with the perforated rail.
If the loop for the earth lead was removed from the protective tube, first insert this lead again, then slide in the perforated rail.
Unscrew the plug base
NOTICE
Ensure the seals are positioned correctly. Replace defective seals immediately!
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5 Operation and control
NOTICE
The device must not be operated beyond its specifications.
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6 Cleaning and Maintenance
This device is maintenance-free.
The method for cleaning the devices must be adapted to the IP protection class of the devices. Do not use cleaners which could
damage the device materials.
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7 Service and repair
This chapter contains information on troubleshooting and correction should an error occur during operation.
Repairs to the unit must be performed by Bühler authorised personnel.
Please contact our Service Department with any questions:
Tel.: [phone] or your agent
If the equipment is not functioning properly after correcting any malfunctions and switching on the power, it must be inspected
by the manufacturer. Please send the equipment inside suitable packaging to:
Bühler Technologies GmbH
- Reparatur/Service -
Harkortstraße 29
40880 Ratingen
Germany
Please also attach the completed and signed RMA decontamination statement to the packaging. We will otherwise be unable to
process your repair order.
You will find the form in the appendix of these instructions, or simply request it by e-mail:
[email protected].
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8 Disposal
Dispose of parts so as not to endanger the health or environment. Follow the laws in the country of use for disposing of elec-
tronic components and devices during disposal.
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9 Appendices
9.1 Technical Data
Base unit Dimensions (mm)
Operating pressure max. 1 bar
last
contact
63.5
L2 = min. 70
L1 = min. 30
Rubberised cork
seal
4
Ø55
36
L = max. 1350
first
contact
min. 40
Level float
SK 610
Interface
float WW
90
11.5
100 40
148
Water alarm
contact
Ø60 = installation size
as per DIN24557 part2
6x M5x16 screw
Ø90
6xØ6
Ø73
Operating temperature max. 80 °C
Fluid density min. 0.8 kg/dm³
Oil density max. 0.86 kg/dm³
Material/Version
Float SK 610 (level) Hard PU
Float WW (water alarm) PPH
Switching tube MS
Flange PA 6
Weight at L=500 mm 750 g
Includes:
Mounting screws (quantity 6) and rubberised cork seal.
Level contacts K10 W11 - -
Water alarm contacts - - K6 W7
Function NC/NO* Changeover
contact
NC/NO* Changeover
contact
Voltage max. 230 V AC/DC 48 V AC/DC 230 V AC/DC 230 V AC/DC
Max. switching current 0.5 A 0.5 A 1 A 1 A
Contact load max. 10 VA 20 VA 50 VA 40 VA
Min. contact spacing 40 mm 40 mm fixed fixed
*NC= NC contact/NO = NO contact
All data with empty tank
9.2 Selecting the pin assignment
Read the contacts top to bottom with respect to the length, see example:
L1 = level contact no. 1
L2 = level contact no. 2
etc.
WW = water alarm
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9.3 Standard pin assignment
Connector S6 C6F
circular connector
2xM12
plug A coded
Dimensions
Number of poles 6-pin + PE 6-pin + PE 4 pin/4 pin
DIN EN 175201-804 175301-804 61076-2-101
Voltage max. 230 V AC/DC* 230 V AC/DC* 24 V DC
IP rating IP65 IP65 IP67**
Cable fitting M20x1.5 PG 11 PG7**
Max. Number of contacts 4xK10 + 1xK6
2xW11 + 1xK6
3xK10 + 1xW7
1xW11 + 1xW7
4xK10 + 1xK6
2xW11 + 1xK6
3xK10 + 1xW7
1xW11 + 1xW7
2xK10 + 1xK6
1xW11 + 1xK6
2xK10 + 1xW7
1xW11 + 1xW7
*max. 48 V AC/V DC for change-over contact. **with IP 67 cable box attached. Other connectors available upon request.
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Connector S6 C6F 2 x M12
(base)
Plug
Connection schematic
1
PE
2
3
4
5
6
1
PE
2
3
45
6
Plug A Plug B
1x K10 level contact and
1x K6 water alarm contact
2x K10 level contacts and
1x K6 water alarm contact
3x K10 level contacts and
1x K6 water alarm contact
4x K10 level contacts and
1x K6 water alarm contact
1x W11 level contact and
1x K6 water alarm contact
2x W11 level contacts and
1x K6 water alarm contact
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Connector S6 C6F 2 x M12
(base)
1x K10 level contact and
1x W7 water alarm contact
2x K10 level contacts and
1x W7 water alarm contact
3x K10 level contacts and
1x W7 water alarm contact
1x W11 level contact and
1x W7 water alarm contact
K10 contacts (NC/NO*) and W11 (change-over) are the level contacts.
K6 (NC/NO*) and W7 (change-over) are the water alarm contacts.
*NC=NC contact, NO=NO contact.
9.4 Collecting basin dimensions (optional)
Collecting basin made from St52-3 (with G3/4 connection, includes plug), item no. 10300991
ø32
Plug
VSTI R3/4-ED
G3/4
ø70 2.6
24 133
64
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10 Attached documents
– Declaration of Conformity KX100023
– RMA - Decontamination Statement
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