Buhler Nivotemp NT M-XP Series Installation And Operation Instructions Manual
FluidControl
Level- and temperature sensor
Nivotemp NT M-XP
Installation and Operation Instructions
Original instructions
BE100023
05/2017
Bühler Technologies GmbH, Harkortstr. 29, D-40880 Ratingen
Tel. +49 (0) 21 02 / 49 89-0, Fax: +49 (0) 21 02 / 49 89-20
E-Mail: fluidcontrol@buehler-technologies.com
Internet: www.buehler-technologies.com
Bühler Technologies GmbH, Harkortstr. 29, D-40880 Ratingen
Tel. +49 (0) 21 02 / 49 89-0, Fax: +49 (0) 21 02 / 49 89-20
Internet: www.buehler-technologies.com
E-Mail: fluidcontrol@buehler-technologies.com
Read this instruction carefully prior to installation and/or use. Pay attention particularly to all advises and safety instructions to prevent injuries. Bühler Technologies can not be held responsible for misusing
the product or unreliable function due to unauthorised modifications.
All rights reserved. Bühler Technologies GmbH 2017
Document information
Document No.......................................................... BE100023
Version..........................................................................05/2017
Nivotemp NT M-XP
Contents
1 Introduction..................................................................................................................................................................................................................... 3
1.1 Intended Use......................................................................................................................................................................................................... 3
1.2 Functionality......................................................................................................................................................................................................... 3
1.2.1 Fill level monitoring.............................................................................................................................................................................3
1.2.2 Temperature monitor .........................................................................................................................................................................3
1.3 Design types.......................................................................................................................................................................................................... 3
1.4 Model key...............................................................................................................................................................................................................4
1.5 Scope of Delivery.................................................................................................................................................................................................. 4
2 Safety instructions......................................................................................................................................................................................................... 5
2.1 Important advice................................................................................................................................................................................................. 5
2.2 General hazard warnings .................................................................................................................................................................................6
3 Transport and storage .................................................................................................................................................................................................. 7
4 Setup and connection...................................................................................................................................................................................................8
4.1 Installation............................................................................................................................................................................................................8
4.2 Electrical connections ........................................................................................................................................................................................8
5 Operation and control ..................................................................................................................................................................................................9
5.1 Start-up procedure .............................................................................................................................................................................................9
5.2 LED statuses ..........................................................................................................................................................................................................9
5.3 General key functions ......................................................................................................................................................................................10
5.4 Keylock enabled ................................................................................................................................................................................................. 10
5.5 Menu overview ...................................................................................................................................................................................................11
5.6 Changing basic settings .................................................................................................................................................................................. 12
5.6.1 Set fill level unit .................................................................................................................................................................................. 12
5.6.2 Set temperature unit......................................................................................................................................................................... 12
5.6.3 Reallocate switching outputs ......................................................................................................................................................... 13
5.6.4 Set display refresh rate .....................................................................................................................................................................13
5.6.5 Enable/disable keylock......................................................................................................................................................................14
5.6.6 Fill level scaling....................................................................................................................................................................................14
5.6.7 Assigning the upper limit of the sensor measuring range.................................................................................................... 15
5.6.8 Sensor measuring range lower limit assignment ....................................................................................................................15
5.6.9 Restore factory settings (Reset)...................................................................................................................................................... 15
5.7 Switching outputs..............................................................................................................................................................................................17
5.7.1 Switching output x: Definition of the switching characteristic........................................................................................... 17
5.7.2 Switching output x: Upper switching limit (switching point)..............................................................................................18
5.7.3 Switching output x: Lower switching limit (switch-back point) ..........................................................................................19
5.7.4 Switching output x: Switch-on delay ...........................................................................................................................................19
5.7.5 Switching output x: Switch-back delay .......................................................................................................................................19
5.7.6 Switching output x: Testing the switching output................................................................................................................. 20
5.7.7 Change status LED display function ............................................................................................................................................ 20
5.8 Analogue outputs ............................................................................................................................................................................................. 21
5.8.1 Analogue output x: Assigning the upper limit.......................................................................................................................... 21
5.8.2 Analogue output x: Lower limit assignment ............................................................................................................................ 22
5.8.3 Analogue output x: Signal type assignment............................................................................................................................. 22
5.8.4 Analogue output x: Testing the analogue output ...................................................................................................................23
5.9 Diagnostic options ............................................................................................................................................................................................23
5.9.1 View logbook........................................................................................................................................................................................23
5.9.2 Maximum and minimum fill level ...............................................................................................................................................24
5.9.3 Maximum and minimum temperature ..................................................................................................................................... 24
5.9.4 Define switching output to log ......................................................................................................................................................25
5.9.5 Delay for storing the Min/Max Fill Level......................................................................................................................................25
5.9.6 Delay for storing the Min/Max Temperature ............................................................................................................................25
6 Cleaning and Maintenance.......................................................................................................................................................................................26
7 Service and repair......................................................................................................................................................................................................... 27
7.1 Troubleshooting ................................................................................................................................................................................................ 27
7.2 Spare parts and accessories ...........................................................................................................................................................................28
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8 Disposal...........................................................................................................................................................................................................................29
9 Appendices.....................................................................................................................................................................................................................30
9.1 Technical Data NT M-XP ..................................................................................................................................................................................30
9.2 Dimensions NT M-XP........................................................................................................................................................................................32
9.3 Standard pin assignment NT M-XP.............................................................................................................................................................. 32
9.4 Current settings................................................................................................................................................................................................. 33
9.5 Display ranges ....................................................................................................................................................................................................34
9.6 Display resolution.............................................................................................................................................................................................34
9.7 Menu Sequence Overview .............................................................................................................................................................................. 35
10 Attached documents...................................................................................................................................................................................................36
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1 Introduction
1.1 Intended Use
Level switches are used to monitor the fill level and temperature in fluid systems.
Level switches must not be used in highly flammable or corrosive liquids.
The medium must not contain particles, particularly metallic particles, to prevent deposits on the float or between the float and
switching tube. If necessary, filter the medium.
Please note the technical data in the appendix for the specific intended use, existing material combinations, as well as temperature limits.
WARNING
All device models are solely intended for industrial applications. They are
ponents
safety and health of persons.
Use in explosive areas is
. The devices must not be used if failure or malfunction thereof jeopardises the
1.2 Functionality
1.2.1 Fill level monitoring
prohibited
.
not safety com-
The measuring tube is located inside the tank. The reed-contact is located inside the measuring tube.
Simply put, the reed-contact works the same as a regular resistance potentiometer. The reed-contact consists of a number of
reed switches along with resistors connected in series. The total length of the chain varies by the path being monitored.
If a magnet inside a float trips the reed switch, a resistance signal proportional to the position of the float will be output. When
the float changes positions, resistances are more or less activated and the resistance signal altered based on the position of the
float. The resistance signal passes through a transformer yet and is analysed by the display unit.
1.2.2 Temperature monitor
Temperature is monitored via temperature sensor (Pt100) inside the sensor tube. Depending on the version, there are several
switching outputs combined with one analogue output (4 - 20mA). The temperature is shown in the display.
Please note the technical data in the appendix.
1.3 Design types
The level switch is equipped with different switching and analogue outputs based on the configuration. The outputs are freely
programmable.
The level switch can be equipped with the following options:
OV
G1
Please refer to the type plate for your equipment configuration. In addition to the job number, this also contains the item number and type designation.
Oval flange
Adapter to G1" flange
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NT M-XP
M12 - 4-pin
2M12 - 4-pin
M12 - 8-pin
2M12 - 1 x 4-pin, 1 x 8-pin
BrassMS
Version
200
280
370
500
650
800
2 x PNP switching output
Output card
2S-KN-KT
2S
2 x PNP switching output
1 x analogue level output
1 x analogue temperature output
4 x PNP switching output
1 x analogue level output
1 x analogue temperature output
4S-KN-KT
Optional
OV
G1
Oval flange
Adapter to G1"
For 2S version only
For 4S-KN-KT and 6S version only
For 6S-KN-KT version only
Type designation with display, control unit
Plug connection
Length (max. 1400 mm)
4S
4 x PNP switching output
4 x PNP switching output
1 x analogue level output
1 x analogue temperature output
6 x PNP switching output
6S
6S-KN-KT
1)
2)
3)
1)
3)
2)
-
----
----
----
----
1 x IO-Link
1 x PNP switching output
1D1S
1.4 Model key
1.5 Scope of Delivery
– Level switch
– Product documentation
– Connection/mounting accessories (optional)
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DANGER
WARNING
CAUTION
NOTICE
2 Safety instructions
2.1 Important advice
Operation of the device is only valid 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 Technologies 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
Signal word for an imminent danger with high risk, resulting in severe injuries or death if not avoided.
Signal word for a hazardous situation with medium risk, possibly resulting in severe injuries or death if not
avoided.
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.
Signal word for important information to the product.
Warning signs
These instructions use the following warning signs:
Warns of a general hazard Unplug from mains
Voltage warning Wear respiratory equipment
Warns not to inhale toxic gasses Wear a safety mask
Warns of corrosive liquids Wear gloves
General information
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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.
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.
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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Supply voltage
4 Setup and connection
DANGER Electric voltage
Risk of electric shock
a) Always disconnect the unit from the mains before performing work.
b) Secure the equipment from accidental restarting.
c) The equipment may only be installed, maintained and put into operation by instruc-
ted, competent personnel.
d) 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
The level switch comes fully assembled and can be mounted to the tank using the screw-in thread. Please be sure the float can
move freely and to leave enough space between the tank wall and add-ons.
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.
DANGER Electric voltage
Risk of electric shock
When connecting devices, please note the maximum voltages and currents currents (see
technical data) and use the correct wire cross-sections and circuit breakers.
When selecting the connection lines, also note the maximum operating temperatures of
the devices.
Installation in special areas of application:
If the device will be installed outdoors or in wet areas, the maximum operating voltage
is max. 16 V DC effective or 35 V DC.
The flange-mounted display units can be swivelled vertically by approx. 270° so they are easier to read. Please note the built-in
swivel stop. You will notice more resistance when reaching the stop. Turning it beyond this stop may damage the display unit.
4.2 Electrical connections
Electricity is supplied via plug connectors. Please refer to the appendix for installation dimensions, nominal voltage and plug
configuration.
The temperature switching outputs are PNP transistors (see illustration):
Note:
When measuring the switching output with high-load measuring device inputs or when used as a frequency output, the
load must be set to 10 kΩ between the output and earth (GND) to avoid faulty measurements.
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LEDs
Control keys
Display
5 Operation and control
NOTICE
The device must not be operated beyond its specifications.
5.1 Start-up procedure
The device will automatically switch on when connected to power. It will first briefly display the software version, at which time
the device will also check the built-in components. The display will then switch to displaying measurements.
The following describes the function of the display and control unit:
If an error message appears in the display during operation, please refer to the
and Repair”.
Troubleshooting
table under chapter “Service
5.2 LED statuses
LEDs above the measurement display indicate the status of the switching outputs. The LEDs are permanently assigned to the
switching outputs.
The following table lists the factory settings for the fill level and temperature switching output configuration:
LED 1 – yellow
Status switching output 1
LED 2 - red
Status switching output 2
LED 3 – yellow
Status switching output 3
LED 4 – red
Status switching output 4
LED 5 – yellow
Status switching output 5
2 Switching
outputs
Fill Level Fill Level Fill Level
Temperature Fill Level Fill Level
--- Temperature Fill Level
--- Temperature Temperature
--- --- Temperature
4 Switching
outputs
6 Switching
outputs
The switching characteristics of the LED (on if switching contact closed or open) can be changed.
LED 6 – red
Status switching output 6
--- --- Temperature
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5.3 General key functions
The keys below the display are used for operation.
The menu controls are detailed in the following chapters.
Key Mode Function
– Measurement display: Change measured variables displayed.
– In the menu: Move down one menu level.
Move up one menu level.
– At the end of the menu:
The display indicates the end of the menu.
– Following input/selection: Confirm and save a numerical value entered or a function selection. The dis-
play will flash if a parameter has been changed.
– Measurement display: Displays the configuration.
– In the menu: Scroll up menu item, numerical value or function selection. Holding the key
will continuously scroll.
– Measurement display: Go to main menu.
– In the menu: Scroll down menu item, numerical value or function selection. Holding the key
will continuously scroll.
+
+
60 s no action – In the menu: Exit the main / sub/ drop-down menu.
– In the menu: Exit the main / sub / drop-down menu and return to displaying the measure-
ment without saving changes to the parameters.
– In the menu: Move to the next higher menu level.
To select a menu item and to enter values:
– Open the main menu with the key.
– Select the submenu with the and keys and open the submenu with the key.
– If necessary, select the next submenu with the and keys and open with the key.
– Select the desired menu item with the and keys and open the list of values with the key.
– Set the value with the and keys and confirm with the key. The new settings will the saved and the device will return
to the submenu.
– Select the menu item EXIT to exit the submenu and confirm with the key. The device will return to the next menu level up
or to the measurement display.
5.4 Keylock enabled
With the keylock enabled, selecting the menu with the key will display in place of the main menu. The active
digit will be indicated by a dot.
– Use the and keys to enter the code and confirm with the key. The active digit will move one place to the right. After
entering the 3rd digit the main menu will open.
If the wrong code is entered, the device will return to the measurement display. If you forgot the password you can always enter
master code 287 to access the menu.
You can cancel the keylock under Loc in submenu
Basic Settings Advanced Options
b.EF and enter 000 to reset the code.
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Configuration
Equipment configuration
o___i
____
oiI
Display
Measurement display
Level
Fill Level main menu
out1
Settings menu OUT1
Out 1
out_
Settings menu OUTX
Out X
An 1
Settings menu Analog 1
Analog Out 1
E
Exit menu level
Exit
out_
Settings menu OUTX
Out X
out_
Settings menu OUTX
Out X
An 2
Settings menu Analog 2
Analog Out 2
E
Exit menu level
Exit
tEMP
Temperature main menu
Temperature
b.EF
Basic Adv. Functions
Basic EF
If applicable
If applicable
If applicable
If applicable
If applicable
DiA
Diagnostics menu
Diagnostic
E
Exit menu level
Exit
____
____
Toggle display
Toggle
5.5 Menu overview
The menu structure is based on the VDMA standard sheet 24574-1. The menu structure is hierarchic. The top menu level contains
the main menu items, e.g. oil, tEMP, b.EF, diA, E. Each main menu contains additional submenu items.
The menu items may vary depending on the device configuration. Not all menu items described below will necessarily apply to
your device. Press the key in display mode to open the configuration. A 4-digit code will appear, e.g.
With the 4 digits tsav meaning:
t: Model
s: Number of switching outputs
a: Number of analogue outputs
v: Device installation type
o = level and temperature measurement
2, 4 or 6
0 for 2
i = standard installation (tank installation)
The individual menu items will not be shown if the option does not apply. Example: With a=0 the menu items for configuring
the analogue output does not apply. You can then skip the description for this item.
The structure of main menu
the analogue outputs (if applicable).
Fill Level
(oil) and
temperature
(tEMP) is identical. Here you can configure the switching outputs or
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