KTR-Group NVT-E Series Manual

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
1 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
NVT-E
Operating/Assembly instructions

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
2 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
The level switches series NVT-E serve for monitoring level and temperature in tanks in fluid systems.
Depending on the model, the level switches are equipped with a different number of switching outputs.
Please find the configuration on the type plate. Here you will find our type description.
1Technical data 4
2Advice 5
2.1 General advice 5
2.2 Safety and advice symbols 5
2.3 General hazard warnings 5
2.4 Intended use 5
3Assembly 6
3.1 Start-up (General) 6
4Operation 6
4.1 Switching on 6
4.2 LED status display 7
4.3 Button functions 7
4.4 Button lock active 8
4.5 Summary of menu 8
4.6 Amendment of basic settings 9
4.6.1 Defining filling level 10
4.6.2 Defining temperature 10
4.6.3 Reassignment of switching outputs 11
4.6.4 Setting updating rate of display 11
4.6.5 Activating/Deactivating button lock 12
4.6.6 Scaling of charging level 12
4.6.7 Maximum displayed value of filling level 13
4.6.8 Minimum displayed value of filling level 13
4.6.9 Resetting factory settings (Reset) 13
4.6.10 Factory settings 14
4.7 Switching outputs 15
4.7.1 Definition of switching characteristics 15
4.7.2 Upper switching limit (set point) 17
4.7.3 Lower switching limit (reset point) 17
4.7.4 Delay for set point 18
4.7.5 Delay for reset point 18
4.7.6 Testing the switching output 19
4.7.7 Changing display function of status LED 19
4.8 Analogue outputs 21
4.8.1 Assignment of upper limit 21
4.8.2 Assignment of lower limit 21
4.8.3 Defining the type of signal 21
4.8.4 Testing the analogue output 22
Table of contents

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
3 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
4Operation 6
4.9 Diagnosis 22
4.9.1 Opening the journal 23
4.9.2 Maximum/minimum filling level 24
4.9.3 Maximum/minimum temperature 24
4.9.4 Assigning the switching output for recording 25
4.9.5 Delay for min./max. saving (filling level) 25
4.9.6 Delay for min./max. saving (temperature) 25
5Breakdowns, causes and elimination 26
6Disposal 26
7Maintenance and service 26
8Spares inventory, customer service addresses 27
Table of contents

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
4 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
Technical data
Illustration 1
Operating pressure:
max. 1 bar
Operating temperature:
-20 °C to +80 °C
Ambient temperature:
-20 °C to +70 °C
Weight:
Approx. 400g
Density of fluid:
Min. 0.8 kg/dm3
Float:
PU
Immersion pipe:
MS
G 3/4 flange:
MS
Measuring resistor:
Reed chain
Resolution:
10 mm
Temperature sensor:
PT100 class B
DIN 60751
Display and control unit
Display:
4-digit 7-segment LED display
Operation:
more than 3 buttons
Memory:
Min. and max. value memory
Current consumption with starting:
Approx. 100 mA for 100 ms
Current consumption during operation:
Approx. 50 mA
Supply voltage (UB):
10-32 V DC (nominal voltage 24 V DC)
Protection class:
IP 65
Display units:
Level:
Temperature:
or
%, cm, L, i, Gal
-20 °C to +120 °C
-4 °F to 248 °F
Setting range:
Level:
Temperature:
or
e. g. 0-100 %l
0 °C to +100 °C
32 °F to 212 °F
Accuracy:
1 % of final value
Table 1: Pin assignment
Type
Special design
NVT-E …-4-M12
PNP transistor output
2 times
4 times
Analogue output - level
---
---
Analogue output - temperature
---
---
Type
NVT-E …-2NT-M12
Special design
PNP transistor output
2 times
4 times
Analogue output - level
1 time
1 time
Analogue output - temperature
1 time
1 time
1 Technical data

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
5 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
Please read through these operating/assembly instructions carefully before you assemble the level and
temperature control.
Please pay special attention to the safety instructions!
The operating/assembly instructions are part of your product. Please store them carefully and close to the level
and temperature control. The copyright for these operating/assembly instructions remains with KTR.
STOP
Warning of personal injury
This symbol indicates notes which may contribute to
preventing bodily injuries or serious bodily injuries that
may result in death.
!
Warning of product damages
This symbol indicates notes which may contribute to
preventing material or machine damage.

General advice
This symbol indicates notes which may contribute to
preventing adverse results or conditions.
STOP
With assembly and disassembly of the level and temperature control it has to be made sure
that the entire drive train is secured against accidental switch-on. You may be seriously hurt
by rotating parts. Please make absolutely sure to read through and observe the following
safety indications.
•All operations on and with the NVT-E have to be performed taking into account "safety first".
•Please make sure to switch off the power pack before you perform your work on the NVT-E.
•Secure the power pack against accidental switch-on, e. g. by providing warning signs at the place of switch-on
or removing the fuse for current supply.
•Do not reach into the operation area of the machine as long as it is in operation.
•Please secure the rotating drive components against accidental contact. Please provide for the necessary
protection devices and covers.
You may only assemble and disassemble the NVT-E if you
•have carefully read through the operating/assembly instructions and understood them
•are technically qualified and specifically trained (e. g. safety, environment, logistics)
•are authorized by your company
The NVT-E may only be used in accordance with the technical data (see chapter 1). Unauthorized modifications
on the NVT-E are not admissible. We will not assume liability for any damage that may arise. In the interest of
further development we reserve the right for technical modifications.
The level and temperature control (NVT-E) described in here corresponds to the technical status at the time of
printing of these operating/assembly instructions.
2 Advice
2.1 General advice
2.2 Safety and advice symbols
2.3 General hazard warnings
2.4 Intended use

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
6 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
The level transmitters are supplied fully assembled and can be fixed to the tank by means of the screw-in thread.
Please make sure that the float can move freely and sufficient distance to the tank walls and to other equipment is
kept. If the float has possibly been disassembled it has to be made sure that the magnet inside the float is located
above the fluid level. This can easily be inspected by means of a piece of iron which allows to find out the position
of the magnet inside the float.
!
The electrical connection may be performed by trained technical staff only.
Connection
The mains voltage is connected to connector S6 or M12, respectively. Nominal voltage of devices is 24 V DC.
For mounting dimensions and pin assignment please refer to chapter 1 Technical Data.
The switching outputs are designed as PNP transistor outputs
(see illustration 2).
Illustration 2

If the switching output is measured with high-impedance
measuring equipment or if the frequency output is used,
connect a 10 kresistor between output and ground to
avoid faulty measurements.
If an error message appears in the display during normal operation, please
refer to chapter 5 Breakdowns, Causes and Elimination.
After connecting the device to the mains, the software version is displayed
initially for a short time. Afterwards, the display switches to measurement
display.
The functions of the display and control unit are explained in the following
chapters.
Illustration 3
3 Assembly
3.1 Start-up (General)
4 Operation
4.1 Switching on

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
7 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
Light emitting diodes above the measurement display indicate the status of the switch outputs. The LEDs are
assigned to the switching outputs.

Table 2 shows the factory settings for the assignment of the switch outputs as level or
temperature output.
Table 2: LED status display
LED display
2 switching outputs
4 switching outputs
LED 1 - yellow
indicates switching output 1
Level
Level
LED 2 - red
indicates switching output 2
Temperature
Level
LED 3 - yellow
indicates switching output 3
---
Temperature
LED 4 - red
indicates switching output 4
---
Temperature

The switching characteristics of the LEDs (illuminated with closed or opened switch
contact) can be changed, please note chapter 4.7 switching outputs.
Operation is performed via the buttons below the display.
Table 3: Button functions
Button
Mode
Function

- Measurement display:
Switching the display (example):
()
- Within the menu:
Switching to a submenu
- At the end of the menu:
Switching to a superordinate menu
(Exit) indicates the end of the menu
- After input/selection:
Accepting and saving a value entered or a feature
selection

- Measurement display:
Displaying the configuration
- Within the menu:
Scrolling up the menu item, value or feature selection.
Pressing the button changes the value continuously.

- Measurement display:
Switching to the main menu
- Within the menu:
Scrolling down the menu item, value or feature selection.
Pressing the button changes the value continuously.
+ *
- Within the menu:
Exiting the main, sub- or optional menu and returning to
measurement display
+ *
- Within the menu:
Switching to the superior menu level
60 s no action *
- Within the menu:
Exiting the main, sub- or optional menu
* The values that were modified are not stored if you exit the optional or setting menu.

A detailed explanation of the menu control is listed in the following chapters.
4 Operation
4.2 LED status display
4.3 Button functions

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
8 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
To select a menu item and set the values please proceed as follows:
•Open the main menu via the button .
•Select the submenu via the buttons and and open the submenu via the button .
•If applicable, select the next submenu via the buttons and and open it using the button .
•Select the requested menu item via the buttons and and open the parameter list via the button .
•Set the value using the buttons and and accept via the button .
The amended settings are saved and the device returns to the submenu.
•Exit the submenu by selecting menu item EXIT and press button to accept.
The device returns to the superordinate menu or measured value display, respectively.
If the button lock is activated, retrieving the menu via button shows the display
instead of the main menu. The active digit is marked by a dot.
•Enter the code via the buttons and and press the button to accept.
The active digit shifts to the right by one place. Having entered the 3rd digit the main menu is opened.

Having entered an incorrect code, the device returns to measurement display. If you have
forgotten the password, enter the master code 287 to return to the menu.
To unlock the button lock, reset the password with the input 000 in the menu item in the submenu Basic
Settings Extended Functions .
The menu structure is based on the VDMA standard 24574 and following.
The menu has a hierarchy structure. The highest menu level includes recording of the main menu, e. g. ,
, , , . Each main menu comprises further submenu items.
The menu items may vary depending on the configuration of the device. Your device may not provide all menu
items described below. You can retrieve the configuration by pressing the button in the display mode. A 4-digit
code is displayed, e. g.:
Meaning of the 4-digit code tsav:
t: type
s: number of switching outputs
a: number of analogue outputs
v: mounting of device
t = temperature measurement
o = level and temperature measurement
2 or 4
0 or 2
i = standard mounting (installation of
tank)
4 Operation
4.3 Button functions
4.4 Button lock active
4.5 Summary of menu

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
9 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
The different menu items are not displayed if the option is
not available.
Example: With a=0 the menu items for setting the
analogue output are not available. In this case
you may skip the description of these items.
The structure of the main menu filling level ( ) and
temperature ( ) are identical. These menus include
all settings for the switching outputs or the analogue outputs
(if available).
The basic settings of the device may be changed. General
settings are made in the menu Basic settings extended
functions ( ). These settings should be made first, since
they affect displays and settings in the different menus.
General settings are, for example, the units used and the
assignment of the switching outputs for measurement of
filling level and temperature. The assignment of the
analogue outputs cannot be changed.
In addition the menu Diagnostics provides options of
diagnostics.
Illustration 4

A detailed explanation of the overall menu structure is shown at the end of these
operating/assembly instructions.
In the menu Basic settings extended functions ( ) general basic settings are made. These settings affect the
display of values in the measuring display as well as the options of settings in the menus filling level and
temperature. It is possible to change the assignment of switching outputs for measurement of filling level and
temperature (if available) in this menu, too.
•Press the button to open the main menu.
•Select the menu item via the buttons and and open the menu via the button .
▲▼
▲▼
Main menu level control
Level oi l
▲▼
►
►
Main menu temperature
Temperature t emp
►
►
►
▲▼
Settings for OUT X
Out X out _
Settings for OUT X
Out X out _
Settings for Analog 2
Analog Out2 An2
Device configuration
Configuration o__i
▲
Measured values
Display ____
Settings for OUT1
Out 1 out 1
Exit submenu
Exit E
Settings for Analog 1
Analog Out1 An1
Basic extended functions
Basic EF b)EF
Exit submenu
Exit E
Main menu diagnostics
Diagnostic di A
Exit menu
Exit E
Settings for OUTx
Out x out _
▲▼
▲▼
If equipped
If equipped
▲▼
▲▼
▲▼
▲▼
If equipped
If equipped
If equipped
▲▼
4 Operation
4.5 Summary of menu
4.6 Amendment of basic settings

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
10 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
In this menu the displayed unit symbol for the filling level is defined.
Unit level
Set Unit Level o)uni
- I - - non
Parameter ___
Basic ext. functions
Basic EF b)EF ►►
Optional settings:
[, , ,
, , ]
The following menu items are available:
Per cent
cm
Inch
Litre
Gallons
none
Please note:
•If „no unit“ is selected, the measured values are scaled to a 4-digit display.
•The measured values are not automatically converted. Having converted the unit
the measurement range should be scaled, if necessary (see menu filling level
and ).
In this menu the displayed unit symbol for the temperature is defined.
Unit temperature
Set Unit Temp t )uni
;C - ;F
Parameter ;_
Basic ext. functions
Basic EF b)EF ►►
The following menu items are available:
Degrees Celsius
Degrees Fahrenheit
Please note:
•If changing the setting, all respective settings such as setting of switching points
are amended accordingly.
4 Operation
4.6 Amendment of basic settings
4.6.1 Defining filling level
4.6.2 Defining temperature

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
11 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
The amendment of assignment of the switching outputs is described here based on the example of switching
output 1.
Reassign OUTX
reassign OX r )ou_
oi l - t emp
Parameter ____
Basic ext. functions
Basic EF b)EF ►►
The switching outputs 1 to n can be assigned optionally to the measuring size of filling level or temperature. The
assignment affects the appearance of the menu filling level and temperature . In the factory setting
the switching output OUT 1 is assigned to the filling level.
Example: OUT 1 shall be assigned to temperature. For that purpose must be set to . As a result
the setting menu is shifted from the menu filling level to the menu temperature. The procedure
for amending the settings does not change.

With reassignment of the switching outputs all corresponding settings have to be verified.
The figures set before are not automatically adapted. The assignment of LEDs for status
display does not change.
The following menu items are available:
Measurement of filling level
Measurement of temperature

The other switching outputs for measurement of filling level of temperature are assigned in
the same way as switching output 1.
Perform the same steps as described for switching output OUT 1.
Depending on the application the updating rate of the dispay can be set. The display can be fully switched off as
well. The function of LED continues to be operative.
Display refresh rate
Display Rate di s
FASt - oFF
Parameter ____
Basic ext. functions
Basic EF b)EF ►►
The following menu items are available:
fast
medium
slow
display off
Please note:
•Error messages continue to be displayed in spite of the display being switched
off.
4 Operation
4.6 Amendment of basic settings
4.6.3 Reassignment of switching outputs
4.6.4 Setting updating rate of display

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
12 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
To prevent unauthorized modifications of settings on the device, it is possible to activate a button lock.
Lock key pad
Lock Device Loc
0 - 999
Parameter ___
Basic ext. functions
Basic EF b)EF ►►
The button lock is activated if at least one digit is set > 0. While entering the data the active digit is marked with a
dot.
•Open the parameter menu by pressing the button :
•Set the digit via the buttons and (0 to 9) and accept by pressing the button .
The active digit shifts to the right by one digit.
•Finally confirm the code by pressing the button .
The device returns to the submenu.
Please note:
•Enter 000 to deactivate the button lock.
Scaling of the display range is effected between the highest and
the lowest level of the float. The display accuracy and the
resolution for defining the switching outputs for the charging
level are affected by this scaling, too.
The factory setting of the switching point and the display is
shown in illustration 5:
A: Factory settings
1: Measuring range
A: Types with analogue output:
The factory setting provides for an ascending display with
the filling level rising so that 0% are displayed at the lowest
possible level and 100% at the highest possible level.
These values can be modified as described below.
Illustration 5
4 Operation
4.6 Amendment of basic settings
4.6.5 Activating/Deactivating button lock
4.6.6 Scaling of charging level

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
13 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
The displayed value (upper limit of the measurement range) for the maximum filling level is defined here.
Val. displayed at 100%
Set Upper o)Hi
- 999 - 9999
Parameter ____
Basic ext. functions
Basic EF b)EF ►►
Setting range:
-999…9999
Assignment of the maximum displayed value (upper limit of the measurement
range) to the maximum filling level
Please note:
•To prevent misoperation, the settings of the level outputs should be reviewed or
adapted after changing.
The displayed value (lower limit of the measurement range) for the minimum filling level is defined here.
- 999 - 9999
Parameter ____
Basic ext. functions
Basic EF b)EF ►► Val. displayed at 0% Set Lower o)Lo
Setting range:
-999…9999
Assignment of the maximum displayed value (upper limit of the measurement
range) to the maximum filling level
Please note:
•To prevent misoperation, the settings of the level outputs should be reviewed or
adapted after changing.
The function Reset ( ) allows to reset the factory settings. Since the limit values are reset, too, it is not
absolutely necessary to review the settings for the charging level and the temperature.
!
All modifications are lost when using the function RESET.
Basic ext. functions
Basic EF b)EF Factory settings Reset r ES
no - Yes
Confirm ___
►►
The following menu items are available:
Delivery status: NO.
The current settings are maintained.
Delivery status: Yes.
The settings are reset to the standard
factory settings.
4 Operation
4.6 Amendment of basic settings
4.6.7 Maximum displayed value of filling level
4.6.8 Minimum displayed value of filling level
4.6.9 Resetting factory settings (Reset)

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
14 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
Definitions of the factory settings set:
x/ xSwitching point / reset point x
x/ xDelay for switching/delay for resetting for switching output x
x. / x. Maximum and minimum measured value for output
xSignal characteristics of analogue output
xSwitching characteristics of switching output x
/ Unit for filling level/temperature
/ Maximum / minimum filling level
xAssignment of switching output x towards filling level or temperature monitoring
Updating rate of display
Button lock
Recorded switching output
Delay for recording the minimum/maximum charging level
Delay for recording the minimum/maximum temperature

With customized parameters presetting by the factory may differ from the figures specified
in here.
Table 4: Type with 4 switching outputs
Switching outputs
Basic settings
Diagnosis
/
5% / 2%
-I- (%)
/ /
/ /
°X
/
15% / 12%
%
/ /
/ /
%
/
/ °X
/ /
/ /
/
/ °X
/ /
/ /
Table 5: Type with 2 switching outputs and 2 analogue outputs
Switching outputs
Basic settings
Diagnosis
/
5% / 2%
-I- (%)
/ /
/ /
°X
/
/ °X
%
/ /
/ /
%
Analogue outputs
/ /
/ /
/ /
/ /
4 Operation
4.6 Amendment of basic settings
4.6.10 Factory settings

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
15 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
All switching outputs are set in the same way. Therefore, the number of the switching output is marked with x. Call
up the switching output to be set via the menu of the corresponding measurement size ( or ).
Main menu meas. value
Meas. value ____
Measured value
Display ____ Settings OUTX
Out X out _
►
▲▼
Table 6: Assignment of switching outputs (factory-provided)
Switching output
Assignment with
2 switching outputs
Assignment with
4 switching outputs
1
Level
Level
2
Temperature
Level
3
Temperature
4
Temperature

The assignment of the switching outputs as well as further basic settings referring to all
switching outputs can be modified in the menu Basic settings extended functions.
The submenu Extended functions allows to make further settings for each switching output,
for example, the switching characteristics of the output. Testing the output is possible here,
too.
The switching characteristics for the output are defined in the following menu:
Definition OUTX
Set Out X ou_ ►
Hno - FM
Parameter ___
Extenden functions
EF X EF_
Settings OUTX
Out X out _ ►►
Main menu meas. value
Meas. value ____ ►
The following menu items are available:
Hysteresis function
Hysteresis function
make contact
Hysteresis function
break contact
Function of make contact or break contact setting
the output signal when exceeding the switching
point defined. If the reset point is fallen below, the
output signal is deleted.
Make contact means here that the PNP switching
output is closed if the measured value is above the
switching point xx and is opened if the reset
point xis fallen below.
Break contact means here that the PNP switching
output is open if the measured value is above the
switching point xand is closed if the reset point
xis fallen below.
See explanations in the drawing below.
4 Operation
4.7 Switching outputs
4.7.1 Definition of switching characteristics

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
16 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
Window function
Window function
make contact
Window function
break contact
Function of make contact or break contact defining
a signal window. If the measure window is
reached, the output signal is set and deleted once
it is left.
Make contact means here that the PNP switching
output is closed if the measure value is within the
window limits. Otherwise the switching output is
open.
Break contact means here that the PNP switching
output is open if the measured value is within the
window limits. Otherwise the switching output is
closed.
Frequency output
Frequency output
If the output is defined as a frequency output, a
square wave signal with a frequency between
1 Hz and 100 Hz is given proportionally to the
measured value.

To increase the slew rate of the square
wave signal, we recommend to load
the switching output with a 10 k
resistance.

The switching function may have different descriptions:
Illustration 6
4 Operation
4.7 Switching outputs
4.7.1 Definition of switching characteristics

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
17 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
The upper switching limit for switching output OUT 1 is set in the following submenu:
Set point X
SP1 FH1 F1)Hi ____
Settings OUTX
Out X out _
[ o)Lo - o)Hi ]
Parameter ____
►
►
Main menu meas. value
Meas. value ____ ►
Setting range:
[] …. [ ]
Switching point for OUT x
Please note:
The switching point must be set within the measuring range (see menu Basic
settings extended functions).
•If the function window was assigned to the switching output OUT 1,
is displayed.
The value set corresponds to the upper window limit.
•If the function frequency output was assigned to the switching output OUT 1,
is displayed.
The value set corresponds to the frequency 100 Hz.
The lower switching limit for switching output OUT 1 is set in the following submenu:
Restet point X
r P1 FL1 F1)Lo ____
[ o)Lo - o)Hi ]
Parameter ____
Settings OUTX
Out X out _ ► ►
Main menu meas. value
Meas. value ____ ►
Setting range:
[] …. [ ]
Reset point for OUT 1
Please note:
The reset point must be set within the measuring range.
•If the function window was assigned to the switching output OUT 1,
is displayed.
The value set corresponds to the upper window limit.
•If the function frequency output was assigned to the switching output OUT 1,
is displayed.
The value set corresponds to the frequency 1 Hz.
4 Operation
4.7 Switching outputs
4.7.2 Upper switching limit (set point)
4.7.3 Lower switching limit (reset point)

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
18 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
The menu Extended functions xprovides further settings for the switching output x. You can find the submenu
on the second submenu level:
The delay time for set point and reset point prevents too many false alarms with turbulent conditions. The delay
for the set point is set in the following menu:
Extenden functions
EF X EF_ Delay for OUTX on Delay SP X dS_
0 - 100
Parameter ___
Settings OUTX
Out X out _ ►►►
Main menu meas. value
Meas. value ____ ►
Setting range:
0 .… 100 seconds
Time period in seconds during which the signal must remain continuous to allow
the switching output to respond.
Please note:
•If the function window was assigned to the switching output OUT x, the value set
corresponds to the delay for set point detecting when finally reaching the
measurement window.
•If the function frequency output was assigned to the switching output OUT x, this
value does not have any effect.
The delay for reset point is set in the following menu:
Delay for OUTX off
Delay RP X dr _
0 - 100
Parameter ___
Extenden functions
EF X EF_
Settings OUTX
Out X out _ ►►►
Main menu meas. value
Meas. value ____ ►
Setting range:
0 .… 100 seconds
Delay for reset signal for OUT x
Time period in seconds during which the signal must remain continuous to allow
the switching output to respond.
Please note:
•If the function window was assigned to the switching output OUT 1, the value set
corresponds to the delay for set point detecting when the measurement window is
actually left.
•If the function frequency output was assigned to the switching output OUT 1, this
value does not have any effect.
4 Operation
4.7 Switching outputs
4.7.4 Delay for set point
4.7.5 Delay for reset point

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
19 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
Testing the switching output can be started in the following menu:
Test for OUTX
Check Out X C)ou_
Extenden functions
EF X EF_
Settings OUTX
Out X out _
n)oP - on
Parameter ____
►►►
Main menu meas. value
Meas. value ____ ►
Testing options for the switching output
Options for setting from to / / / :
Normal operation of
switching output
Switching off the switching
output permanently
Switching on the switching
output permanently
Options for setting from to
Normal operation as a
frequency output
Output
frequency 1 Hz
Output
frequency 100 Hz

On completion of the tests make absolutely sure to set the function to normal operation
.
The switching status of the output is indicated by the LEDs in the display. The assignment of LEDs to the
switching output is shown in the table below:
Table 7:
Numbering of LED
Switching output x
Assignment with
2 switching outputs
Assignment with
4 switching outputs
1
LED 1 - yellow
LED 1 - yellow
2
LED 2 - red
LED 2 - red
3
LED 3 - yellow
4
LED 4 - red
In the factory settings the LED displays the physical condition of the PNP switching output
(switching output closed - LED is illuminated).
In some cases the logical function of the display is to act differently from the physical signal on the switching
output. Therefore, the display in this menu item can also be reverted
(switching output opened - LED is illuminated).
Example based on temperature:
Two switching outputs are available for temperature which are set as follows:
•Upper switching contact: maximum contact, ascending make contact. The LED is illuminated when the
maximum value of temperature is exceeded and the temperature is beyond the requested range. Thus, the
status displayed is “error” if the LED is illuminated.
•Lower switching contact: minimum contact, ascending break contact. The LED is illuminated with the factory
settings when the minimum value of temperature is exceeded. In this case the LED would be illuminated if the
status was in order.
4 Operation
4.7 Switching outputs
4.7.6 Testing the switching output
4.7.7 Changing display function of status LED

NVT-E
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42611 EN
20 of 27
4
Please observe protection
note ISO 16016.
Drawn:
2019-12-06 Pz/Bet
Replacing:
KTR-N dated 2019-02-14
Verified:
2019-12-06 Pz
Replaced by:
The table shows an example with factory settings and with inverted status function for LED3.
The switching points are defined as follows:
= 70 °C, = 65 °C
= 80 °C, = 75 °C
Table 8:
Factory settings
Status function
LED3 inverted
Condition
Status
A
Temperature rising to > 70 °C
PNP switching output 3 is closed
OK
LED3 on
LED3 off
B
Temperature rising to > 80 °C
PNP switching output 4 is closed
Error
LED4 and LED3 on
only LED4 on
C
Temperature dropping to < 75 °C
PNP switching output 4 is opened
OK
LED3 on
LED3 off
D
Temperature dropping to < 65 °C
PNP switching output 3 is opened
Error
LED3 off
LED3 on
Here you can invert the status function of LED for a contact: the LED is illuminated when the contact is opened,
thus falls below the minimum temperature, and when the LED is illuminated the status „error“ is displayed.
Especially the recording of incidents depends on the illumination of LED (see chapter 4.9 Diagnosis, ).
Behavior LEDX
LED Out X LEd_
L= o - L=- o
Parameter L=__
►
Extenden functions
EF X EF_
Settings OUTX
Out X out _ ► ►
Main menu meas. value
Meas. value ____ ►
The following menu items are available:
LED = output;
the LED is illuminated when the PNP
switching output is closed.
LED = -output;
the LED is illuminated when the PNP output
is opened.
Please note:
Especially the recording of incidents depends on the illumination of LED
(see chapter 4.9 Diagnosis, ).
4 Operation
4.7 Switching outputs
4.7.7 Changing display function of status LED