UWT Nivobob NB 3000 User manual

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
Table of contents
Page
Safety notes/ Technical support 2
---------------------------------------------------------------------------------------------------------------------------
Introduction 3
---------------------------------------------------------------------------------------------------------------------------
Dimensions 4
---------------------------------------------------------------------------------------------------------------------------
Technical data Electrical Data 7
Mechanical Data 8
Operating conditions 9
Transport and Storage 9
Approvals 10
Sensor weight guide 11
---------------------------------------------------------------------------------------------------------------------------
Options 12
---------------------------------------------------------------------------------------------------------------------------
Mounting 13
---------------------------------------------------------------------------------------------------------------------------
Electrical installation 15
---------------------------------------------------------------------------------------------------------------------------
Signal overview 20
---------------------------------------------------------------------------------------------------------------------------
Programming Quickset menu 22
Output adjustment menu 25
Diagnostics menu 28
Communication menu 30
Modbus register 31
---------------------------------------------------------------------------------------------------------------------------
Commissioning Interface measurement 33
---------------------------------------------------------------------------------------------------------------------------
Maintenance General items 34
Diagnostics Maintenance 35
Diagnostics Failure 37
---------------------------------------------------------------------------------------------------------------------------
Notes for use in Hazardous Locations 38
---------------------------------------------------------------------------------------------------------------------------
Disposal 40
Subject to technical change. We assume no liability for typing errors.
All dimensions in mm (inches). Different variations to those specied are
possible.
Please contact our technical consultants.
Nivobob®1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b gi020116 1

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
Safety notes / Technical support
Notes
• Installation, maintenance and commissioning must be carried out only by qualied technical personnel.
• The product must be used only in the manner outlined in this instruction manual.
Special attention must be paid to warnings and notes as follows:
WARNING
Relates to a caution symbol on the product and means, that a failure to observe the
necessary precautions can result in death, serious injury and/ or considerable material
damage.
WARNING
Relates to a caution symbol on the product and means, that a failure to observe the
necessary precautions can result in death, serious injury and/ or considerable material
damage.
This symbol is used, when there is no corresponding caution symbol on the product.
A failure to observe the necessary precautions can result in considerable material
damage.
CAUTION
Safety symbols
In manual and on
product
Description
CAUTION: refer to related documents (manual) for details.
Earth (ground) Terminal
Protective Conductor Terminal
Technical support
Please contact your local supplier (see www.uwt.de for address). Otherwise you can contact:
UWT GmbH Tel. [phone]
Westendstr. 5 Fax. [phone]
87488 Betzigau [email protected]
Germany www.uwt.de
WARNING
Relates to a caution symbol on the product: Risk of electric shock
Nivobob®
1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b
gi020116
2

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
Introduction
The Nivobob®NB 3000 is an electromechanic level measuring
instrument for continuous measuring of level or volumes in silos,
hoppers or tanks.
Applications
• Powder, granulate, small or coarse bulk goods
• Interface measurement (solids in water)
Available for industries such as
• Chemistry
• Food
• Cement
• Mining
• Plastics
• others
Features
Process
• Suitable for most types of bulk goods
• Independent of bulk material properties, such as:
Dielectricity and conductivity of the bulk good
Dusty atmosphere in the silo
Changing humidity inside the product
Products that tend to stick
• No mechanical load on the silo roof, the sensor weight
just touches the surface of the material
• Very accurate measurement
Service
• Simple installation and commissioning
• Measurement principle easy to understand
• Rope, tape and (optional) motor with increased service life
• Low maintenance
Approvals
• Approval for use in Hazardous Locations
Mechanic
• Measurement range up to 50 m (164 ft)
• 1½" process connection possible
• Different sensor weights, suitable for every application
• Internal tape cleaner for difcult materials
• Window in lid and external start button (optional)
• Robust cast housing, ingress protection IP66
Electronic
• Micro processor controlled measurement
• Comprehensive diagnostics possibilities
• Output 0/4-20 mA/ Modbus/ Probus DP/ counting pulses
• Programmable relais (can be used as level limit switch outputs)
• Measurement start with external signal or integrated timer
Function
The Nivobob® NB 3000 is mounted on the top of the silo. A
sensor weight is driven down into the silo. It is mounted at the
end of a rope or tape which is wound on a motor driven roller.
Upon contact with bulk material, the motor changes the winding
direction and the sensor weight is driven back to the upper stop
position.
During downwards movement of the sensor weight the distance
is electronically measured by the rotations of the internal rope /
tape roller. The microcontroller converts the measured distance
into an output signal, which is a volumetric signal based on the
silo geometry. The output signal is updated, when the sensor
weight touches the bulk material.
Diagnostics
Comprehensive diagnostics possibilities are present:
• Measurement control is done by comparing the moved
distance between up and downward movement and checking
for discrepancy. In case of discrepancy, the sensor weight is
pulled to the upper stop position to ensure, that the sensor
weight is not inside the silo.
• Service interval after a certain amount of measurements and
running time.
• Internal control of motor, motor driver electronic and smooth
movement of rope/ tape rollers.
Diagnostics is in accordance with NAMUR recommendation
NE107.
Nivobob®1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b gi020116 3

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
Dimensions
X
Flange version
DN100/ 4"
Basic type
Thread version
Flange version 2"/ 3"
Flange version,
bottom view
X
A
A
C
C
B
B
B= Diameter of socket pipe
Rope version with
Flange DN100/ 4"
ø60 mm (ø2.36")
All other versions ø40 mm (ø1.57")
Socket
pipe
Socket
pipe
Flange
Thread
Housing Housing
Housing
extension Housing
extension
Housing outside Aluminium, powder coated
Housing inside Aluminium
Housing
extension
Aluminium, powder coated or 1.4305 (303)
Flange 80°C/ 150°C: Aluminium, powder coated
250°C: 1.4305 (303)
Thread 1.4301 (304)
Socket pipe Flange version DN100/ 4", 80°C/ 150°C:
Aluminium
All other versions: 1.4301 (304)
Rope 1.4401 (316)
Tape 1.4310 (301)
X= Length to bottom of sensor weight
(in upper stop position): see next page
A= Lenght of socket pipe
200 mm (7.9")
Optional 500 mm (19.7")/ 1,000 mm (39.4")
C= Housing extension
Flange version
DN100/ 4"
80°C/ 150°C 95 mm (3.74")
250°C 340 mm (13.4")
All other versions 80°C/ 150°C 160 mm (6.3")
250°C 340 mm (13.4")
Rope/ tape Rope/ tape
Dimensions
Materials
Rope ø1.0 mm (ø0.04")
Tape 12 x 0.2 mm (0.47 x 0.008")
With option "Increased corrosion resistance":
All metal parts in contact with the process are coated.
The rope is plastic coated with PA.
The internal bearings are made of stainless steel.
Lk
d2
Flanges
tting to:
DN100 PN16/ 4" 150lbs
Lk = ø180 -190.5 mm (ø7.1 - 7.5") slot
d2 = ø19 mm (ø0.75")
tting to:
2" /3" 150 lbs
Lk = ø120.7 -152.4 mm (ø4.75 -6.0") slot
d2 = ø19 mm (ø0.75")
Flange
Nivobob®
1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b
gi020116
4

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
Dimensions
PVC without
pin
Sensor weights
PVC with
pin
Stainless steel Claw
Folding cover
Spider
Bag
Float
Solids measurement: Rope version
All weights ca. 1,0 kg (2.2 lbs)
X
ø81 mm (ø3.2" )
X = 137 mm (5.4")
Material: PVC
Version with
Flange DN100/ 4"
ø75 mm (ø3.0")
X = 25 mm (1.0")
Pin: 130 mm (5.1")
ø95 mm (ø3.7")
X = 71 mm (2.80")
Material: 1.4305 (303)
ø81 mm (ø3.2")
X = 137 mm (5.4")
Pin: 130 mm (5.1")
Material: PVC (pin POM)
X
X
X
X
X
X
X
X
380 x 380 mm (15 x 15")
X = 150 mm (5.9")
Material: 1.4310 (301)/ 1.4305 (303)
PA canvas
ø600 mm (ø23.6")
X = 160 mm (6.3")
Material: 1.4301 (304)/ 1.4305 (303)
1.4310 (301)
Options and Accessories
pos.28
Compressed air
connector
pos.25
Window in lid and
outside start button
Window in lid
Outside
start button
Compressed
air connector
All other versions
ø42 mm (ø1.65")
X = 81 mm (3.19")
Pin: 130 mm (5.1")
Material:
1.4305 (303)
ø190 mm (ø7.5" )
X = 175 mm (6.9")
Material: Float PP,
Cone: aluminium
ø95 mm (ø3.7")
X = 460 mm (18.1")
Material: PA canvas,
Chain: 1.4305 (303)
Cone: aluminium
Nivobob®1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b gi020116 5

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
Dimensions
Solids measurement: Tape version
All weights ca. 2.1 kg (4.6 lbs)
Interface measurement: Rope version
Weight ca. 1.0 kg (2.2 lbs)
PVC with
pin
Stainless
steel Claw Folding
cover
Spider
Bag
Float
X
ø42 mm (ø1.65")
X = 320 mm (12.6")
Pin: 130 mm (5.1")
Material: 1.4305 (303)
ø95 (ø3.7")
X = 236 mm (9.3")
Material: 1.4305 (303)
ø81 mm (ø3.2")
X = 465 mm (18.3")
Pin: 130 mm (5.1")
Material: PVC (pin POM)
X
X
X
X
X
X
380 x 380m m (15 x 15")
X = 430 mm (16.9")
Material: 1.4310 (301)/
1.4305 (303)
PA canvas
ø600 mm (ø23.6")
X = 345 mm (13.6")
Material: 1.4301 (304)/ 1.4305 (303)
1.4310 (301)
ø190 mm (ø7.5" )
X = 285 mm (11.2")
Material: Float PP
ø95 mm (ø3.7")
X = 575 mm (22.6")
Material: PA canvas
Aluminium
1.4305 (303)
ø81 mm (ø3.2" )
X = 82 mm (3.22")
Material: PVC with plastic/ metal disks
X
Interface measurement: Tape version
Weight ca. 2.1 kg (4.6 lbs)
ø42 mm (ø1.65")
X = 320 mm (12.6")
Pin: 130 mm (5.1")
Material: 1.4305 (303)
X
including additional disks
to adjust to the application
Aluminium Aluminium Aluminium
Aluminium Aluminium
Aluminium
1.4305 (303)
1.4305 (303)
Aluminium
Nivobob®
1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b
gi020116
6

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
Technical data
Electrical data
Power supply AC version 98 .. 253 V 50 - 60 Hz
DC version 20 .. 28 V
(voltages incl. 10% of EN 61010)
Installed load AC version: 150 VA (including internal heater (80 W))
DC version:
One unit: 150 W (with or without internal heater) *
Further units which are connected to the same power supply:
25 W per unit (without internal heater, motor off) **
50 W per unit (without internal heater, motor running)
80 W per unit (with internal heater, supply voltage 20 V DC)
100 W per unit (with internal heater, supply voltage 24 V DC)
120W per unit (with internal heater, supply voltage 28 V DC)
* Considers the max. motor traction which is needed in a failure condition. A failure condition is
assumed for max. one unit at the same time.
** This value can be considered, if the controlling PLC starts the measurement for max. one unit at
the same time.
Signal output:
0/4-20 mA
Max. 500 Ohms (active, isolated) Linearity ±0.1 mA
Signal output:
Relay
4x Relay SPST:
max. 250 V AC, 2 A, 500 VA non inductive
Signal output:
Electronic counting pulse
Optocoupler
max. 30 V DC, max. 25 mA
Communication:
Modbus RTU
Physical layer: RS 485 and Ground, isolated
Mode: RTU, Type: Slave
Device number range: 1 - 247 (selectable in menu), Baudrate: 1,200 to 57,600 Baud, Data bits: 8,
Stop Bits: 1
Parity: None
Multi-drop conguration possible. Factory setting of adress is 31. Each unit which is connected to
the network must be set to an individual adress.
Supported commands
Reading: All diagnostics and parameters using command 03HEX: Read Holding Register
Writing: All parameters using command 06HEX: Write Single Register (not supported is command
10HEX: Write Multiple Register).
Communication:
Probus DP
Physical layer: RS 485, isolated
Type: Slave
Device number range: 0 - 126 (selectable in menue), Baudrate: 9.6 kbps to 12 Mbps
Available communication by GSD le, Read only (Sensor weight bottom to material (in mm))
Accuracy of measurement Output Setting Accuracy
Counting pulse 10 cm (1/3 ft)/ pulse 1 pulse
5 cm (1/6 ft)/ pulse 1 pulse
2,5 cm (1/10 ft)/ pulse 2 pulses
1 cm (1/20 ft)/ pulse 4 pulses
0/4-20 mA 1% of max. range
Modbus RTU/
Probus
0.5% of max. range
Display LCD display: 2 line x 16 digit
Indication light Status by build in LED: Power On, Relais, Maintenance and Failure
Nivobob®1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b gi020116 7

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
Technical data
Mechanical data
Ingress protection IP66, Type 4
Process connection Threads: R 1½" EN 10226 tapered,
NPT 1½" or 3" ANSI B1.20.1 tapered
Flanges: DN100 PN16 EN 1092-1 (unit ts to this ange)
2" or 3" or 4" 150lbs ANSI B16.5 (unit ts to this ange)
Colour Housing, Flange RAL 5010 (gentian blue)
Lid RAL 9006 (aluminium silver)
Material See detail specications on page 4 - 6
Measuring range Rope version max. 30 m (100 ft)
Tape version max. 50 m (164 ft)
Measuring speed Sensor weight speed in average:
Standard version: ca. 0.25 m/s (0.8 ft/sec)
Version with brushless motor: ca. 0.33 m/s (1.0 ft/sec)
Sound level max. 50 dBA
Weight Rope version with ange: ca. 11 kg (24.2 lbs)
with thread: ca. 12 kg (26.4 lbs)
Tape version with ange: ca. 12 kg (26.4 lbs)
with thread: ca. 13 kg (28.6 lbs)
Deviation of vertical
mounting
max. 2°
max. 1° for tape version with extended socket pipe (see page 4)
Compressed air connector
(Option)
Quick coupling incl. opposite part, for hose diameter 9 mm (0.35“), female at housing
Max. operating pressure 0.2 bar (2.9 psi)
Memory Non-volatile (no backup battery required) > 10 years data retention
Connection terminals 0.14 .. 2.5 mm2(AWG 26 .. 14)
Cable entry According to selection:
Screwed cable gland: 2x M20 x 1.5 and 1x M25 x 1.5 Blindplug: 2x M20 x 1.5 or
Conduit ANSI B1.20.1: 1x NPT ¾" and 2x NPT ½" Blindplug: 2x NPT ½"
Clamping range (diameter) of the factory provided cable glands:
M20 x 1.5: 6 .. 12 mm (0.24 .. 0.47")
M25 x 1.5: 8 .. 17 mm (0.31 .. 0.67")
Extension cables for
Probus DP/ Modbus
Use common recommended cables
Isolation Power supply to all other outputs/ inputs: AC version 2,210 Vrms
DC version: 1,000 VDC
Relay to relay: 2,210 Vrms
Protection class I
Overvoltage category II
Pollution degree 2 (inside housing)
Nivobob®
1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b
gi020116
8

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
Operating conditions
Process overpressure -0.3 .. +0.3 bar (-4.4 .. +4.4 psi)
-0.5 .. + 1.7 bar (-7.3 .. +25 psi) optional for CE + ATEX
-0.5 .. + 1.1 bar (-7.3 .. +16 psi) optional for FM general purpose
Process temperature -40°C .. +80/ 150/ 250°C (-40 .. +176/ 302/ 482°F)
Ambient temperature -20°C .. +60°C (-4 .. +140°F)
-40°C .. +60°C (-40 .. +140°F) CE, FM General Purpose with internal heater
-40°C .. +60°C (-40 .. +140°F) ATEX, FM Class II on request possible
max. +40°C (104°F) Version with Process temp. 150°C (302°F)
Ventilation Ventilation is not required
Min. powder density see "Sensor weight guide" on next page
Minimum time between
measuring starts
measuring height 5 m (16 ft )-> 3 min
measuring height 10 m (33 ft) -> 6 min
measuring height 20 m (66 ft) -> 12 min
measuring height 30 m (98 ft) -> 18 min
measuring height 40 m (131 ft) ->24 min
measuring height 50 m (164 ft) -> 30 min
Rope/ tape operating time see page 36
Max. permitted tractive
force
Tape version: with brushless motor: ca. 3,000 N
standard motor: ca. 800 N
Rope version: with brushless motor: ca. 1,000 N
standard motor: ca. 800 N
with increased corrosion resistance: ca. 700 N
Relative humidity 0 - 100%, suitable for outdoor
Altitude max. 2,000 m (6,562 ft)
Expected product lifetime Following parameters have a negative inuence on the expected product lifetime:
High ambient- and process temperature, corrosive environment, high vibration, high ow rate of
abrassive bulk material passing the sensor element, high amount of measurement cycles.
Technical data
Transport and Storage
Transpor t Observe the instructions as stated on the transport packaging, otherwise the products may get
damaged.
Transport temperature: -40 .. +80°C (-40 .. +176°F)
Transport humidity: 20 .. 85%
Transport incoming inspections must be caried out to check for possible transport damage.
Storage Products must be stored at a dry and clean place. They must be protected from inuence of corrosive
environment, vibration and exposure to direct sunlight.
Storage temperature: -40 .. +80°C (-40 .. +176°F)
Storage humidity: 20 .. 85%
Nivobob®1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b gi020116 9

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
Approvals
Hazardous Locations* ATEX II 1/2 D
FM Class. II, III Div.1 Gr. E-G
TR-CU Ex ta/tb IIIC T! Da/Db X
General purpose * CE EN 61010-1
FM General purpose
TR-CU
EMC EN 61326 - A1 (industrial standard)
RoHS conform According to directive 2011/65/EU
* Depending on selected version in selection list
Technical data
Nivobob®
1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b
gi020116
10

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
Sensor weight guide (solids measurement)
Technical data
Sensor weight Application Note Fits through mounting
hole
* Material
densitiy
g/l (lb/ft3)
Material
consistence
Angle of
repose
Max.
process
temp.
Thread Flange
1½" 3" 2" 3" DN100
/ 4"
PVC
without pin
>300
(18)
granulate at 80°C
(176°F)
Standard weight •
PVC
with pin
>300
(18)
granulate,
powder
steep 80°C
(176°F)
The pin penetrates into the material and
avoids slipping or tilting of the sensor
weight on the steep bulk surface.
•
Stainl. steel >300
(18)
granulate,
powder
at,
steep
250°C
(482°F)
The pin penetrates into the material and
avoids slipping or tilting of the sensor
weight on the steep bulk surface.
• • • • •
Claw >200
(12)
coarse (e.g.
stones)
steep 250°C
(482°F)
Avoids slipping or tilting on the steep bulk
surface.
•
Folding cover >20
(1.2)
light powder at,
steep
80°C
(176°F)
Big surface prevents the sensor weight from
sinking into the material.
• • • • •
Spider >40
(1.4)
light powder at,
steep
250°C
(482°F)
Big surface prevents the sensor weight from
sinking into the material.
•
Bag >300
(18)
granulate,
powder
at 80°C
(176°F)
Prevents damage of the conveying screw.
To be lled with bulk material.
•
Float -liquids only - 80°C
(176°F)
To be lled with material.
PVC
without pin
Stainless
steel
Claw
Folding
cover
Spider
Bag
Float
PVC
with pin
* The above mentioned data is a guideline and is valid for material which has settled after lling.
During the lling the bulk density can change (e. g. for uidised material).
Nivobob®1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b gi020116 11

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
Options
Window in lid and
external start button
Enables to see the display through the closed lid and
to start a measurement without opening the lid.
Material of the window: break-proof glass. Drawing see page 5
Weather protection
cover
If the unit is used outdoors, the use of the weather
protection cover is recommended. It protects the
device from all atmospheric inuences such as
• rain water
• condensation water
• excessively high temperatures
• excessively low temperatures in winter
Material: PE, weather and temperature stable
For use in Hazardous Locations only permitted for
Zone 22 or Division 2.
Nivobob®
1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b
gi020116
12

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
Mounting
General Safety Instructions
Process pressure Improper installation may result in loss of process pressure.
Chemical resistance
against the medium
Materials of construction are chosen based on their chemical compatibility (or inertness) for general
purposes. For exposure to specic environments, check with chemical compatibility charts before
installing.
Mounting location The right mounting place is signicant for a proper function. Observe mounting instructions.
Vibrations Avoid mounting in applications with strong vibration. Use rubber mounts for absorption in case of light
vibrations.
Mounting instructions
Mounting position • The unit is mounted vertically on the silo. Max. deviation is 2°.
• There must be at least 200 mm (7.87“) space for the sensor weight to move down in case of a full silo.
Observe the bottom of the sensor weight at "upper stop position" (dimensions see page 4 - 6).
With overlling the rope/tube may break.
Additional Safety Instructions for Hazardous Locations
Installation regulations For devices to be used in Hazardous Locations the respective valid installation regulations must be
observed.
Sparks The installation has to be done in a way, that mechanical friction or impact does not cause sparks
between the aluminium enclosure and steel.
• The socket pipe of the
unit must protude at least
50 mm (2") into the silo.
A version with longer
socket pipe is available.
• Proper movement of the sensor weight must be
guaranteed, even if the sensor weight oscillates.
Observe enough distance to the silo wall,
stanchions and built-in ttings.
• For measurements through a long pipe in
a double chamber silo we recommend the
use of NB 3200 (tape version).
Nivobob®1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b gi020116 13

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
Mounting
Measurement during
lling of the silo
Filling of the silo while measuring might cover the sensor weight with bulk material. Measurements
during lling are possible, if there is enough distance to the infeed, so that no material can fall on the
sensor weight.
Sensor weight
"Bag" and "Float"
• The weights are lled with plastic granulate or sand. They shall be lled on site with bulk material or
liquid, which is not critical if mixed with the material stored in the silo. Consider ageing of the
material.
• When lling, observe the total weigth of the sensor: rope version 1.0 kg (2.2 lbs), tape version 2.1 kg
(4.6 lbs)
Sealing • A rubber seal must be used to tighten the ange.
• Close both lids of the enclosure tightly.
Sensor weight which
does not t through
the mounting hole
The sensor weight must be removed before
placing the unit on the silo. An inlet close to the
xing loacation and a hook is needed.
See installation manual for more details. Hook
Nivobob®
1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b
gi020116
14

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
Electrical installation
Handling In case of improper handling or handling malpractice, the electric safety of the device cannot be
guaranteed.
Installation regulations The local regulations or VDE 0100 (Regulations of German Electrotechnical Engineers) must be
observed.
Fuse Use a fuse as stated in the connection diagrams.
RCCB protection In case of a fault, the supply voltage must be automatically switched off by a RCCB protection switch
to protect against indirect contact with dangerous voltages.
Power supply switch A voltage disconnection switch must be provided near the device.
Wiring diagram The electrical connections are made in accordance with the wiring diagram.
Supply voltage Compare the supply voltage applied with the specications given on the name plate before switching
the device on.
Cable gland The screwed cable gland and closing element must have following specications:
Ingress protection IP66, temperature range from -40°C to +70°C, UL or VDE or INMETRO certied
(depending on the country where the unit is installed), pull relief. Make sure that the screwed cable
gland safely seals the cable and that it is tight (danger of water intrusion). Cable glands that are not
used have to be sealed with a blanking element.
The diameter of the eld wiring cable has to match to the clamping range of the used cable gland.
Conduit system In case of using a conduit system (with NPT thread) instead of a cable gland the regulations of the
country, where the unit is installed, must be observed. The conduit must have a tapered thread either
NPT ½“ or NPT ¾” in accordance with the unit and ANSI B 1.20.1. Not used inlets must be closed
tight with a metal blanking element.
Field wiring cables • The diameter has to match to the clamping range of the used cable gland.
• The cross section has to match with the clamping range of the connection terminals and consider
the max. current.
• All eld wirings must have insulation suitable for at least 250 V AC.
• The temperature rating must be at least 90°C (194°F).
• If higher immunity interferences as specied in the stated EMC standards are present (see chapter
approval), a shielded cable is required, otherwise an unshielded instrumentation cable is
satisfactory.
Guiding the cables in the
terminal box
Cut the eld wiring cables to appropriate length to t properly into the terminal box.
Relay protection Provide protection for relay contacts to protect the device against inductive load surges.
Protection against static
charging
The housing of the unit must be grounded to avoid static charging of the unit. This is particularly
important for applications with pneumatic conveying and non-metallic containers.
General Safety Instructions
Nivobob®1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b gi020116 15

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
External equipotential
bonding terminal
Field wiring A strain relief must be provided for the eld wiring cables, if the device is installed with the factory
provided cable glands.
Cable glands for
ATEX/ TR-CU
Hazardous Locations
The used entry devices and blanking elements must have an adequate type approval and a
temperature range as dened in the technical data of the unit. In addition they shall be suitable
for the conditions and correctly installed. Where available the provided original parts of the
manufacturer must be used.
Conduit system for FM
Hazardous Locations
In addition the regulations of the country must be observed. The used ameproof seals and blanking
elements must have an adequate type approval and a temperature range as dened in the technical
data of the unit. In addition they shall be suitable for the conditions and correctly installed. Where
available the provided original parts of the manufacturer must be used.
Comissioning/ opening
the lid
Comissioning only, when there are no dust deposits or swirls present.
Additional Safety Instructions for Hazardous Locations
Connect to equipotential
bonding of the plant
Nivobob®
1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b
gi020116
16

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
Electrical installation
Relais
Power
supply
0/4-20 mA
Modbus RTU
Probus DP
Start input
El. counting pulse
Terminal location
Power supply and Signal input/ output
Display
Protective
conductor terminal
Full detector input
Power supply
Signal input:
Start of measurement
98 .. 253 V 50 - 60 Hz 20 .. 28 V DC
AC or DC supply
depending on
ordered version
DC version
AC version
Start contact Start +24 V
alternative
Signal
description:
See page 20
Measurement interruption in
case of lling. If used, remove
factory provided connection.
0.14 .. 2.5 mm2
(AWG 26 .. 14)
Internal fuse
AC version:
1.25 A, slow, HBC, 250 V
DC version:
4 A, slow, HBC, 250 V
1.5 .. 2.5 mm2
(AWG 15 .. 13)
0.75 .. 2.5 mm2
(AWG 18 .. 13)
Nivobob®1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b gi020116 17

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
Electrical installation
Signal input:
Full detector
Signal output:
0/4-20 mA
Signal output:
Relay
Signal output:
Electronic counting
pulse
max. 500 Ohm
Relay1
max. 250 V AC, 2 A, 500 VA, non inductive
Fuse: max. 2 A, fast or slow, HBC, 250 V
max. 30 V DC, max. 25 mA
Fuse: max. 63 mA fast and slow
Optocoupler Note:
Reset pulse is done with Relay 2
Signal
description:
See page 20
Signal
description:
See page 20
Relay2 Relay3 Relay4
Signal
description:
See page 21
active, isolated *
Signal
description:
See page 20
0.14 .. 2.5 mm2
(AWG 26 .. 14)
0.14 .. 2.5 mm2
(AWG 26 .. 14)
0.14 .. 2.5 mm2
(AWG 26 .. 14)
0.14 .. 2.5 mm2
(AWG 26 .. 14)
* CAUTION:
If connecting to a PLC with isolated
(oating) 4-20 mA input, the "-" line
must be connected to ground of the PLC.
See user manual of the PLC.
Nivobob®
1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b
gi020116
18

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
Electrical installation
Modbus network Probus DP network
Wiring according to
Probus DP standards
Setting Biasing and Termination Resistor
For use of NB 3000 units in a
external Modbus or Probus
network, it is possible to
set Biasing and Termination
Resistor on each unit as
required.
*factory provided
Biasing OFF* OFF ON
Termination
Resistor
OFF* ON ON
Version with Jumper
Version with DIP switch
Biasing OFF* OFF ON ON
Termination
Resistor
OFF* ON OFF ON
Wiring according to
Modbus standards
DIP Switch position:
Side viewTop view
Nivobob®1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b gi020116 19

Continuous level measuring system
NB 3000
Technical information / Instruction manual
page
Signal input:
Start of measurement
• Floating contact (terminal 24, 25) or
• 24 V DC voltage (terminal 25, 27), current consumption approx. 25 mA, observe the polarity.
Duration of starting signal: 0.7 to 5 s
The contact must be closed or the 24 V signal must be present to start.
Measurement interruption
Used to avoid a measurement in case of lling and to interrupt a running measurement when lling
starts. When the terminal 24 und 26 are opened, the sensor weight returns to the upper stop position.
If required, remove factory provided wire between terminal 24 and 26 and connect to the lling
coupling. The contact must be closed to enable a measurement.
Signal input:
Full detector
Enables to implement a full detector signal in the Modbus or Probus.
When the signal is present (terminal 24 - 28 closed) the yellow LED next to the display in on.
Signal output:
0/4-20 mA
Programmable to indicate a level or a volume signal. The output is updated, when the sensor weight
touches the surface of the bulk good. It stays until the next measurement is done.
Signal output:
Relay
Relais can be setted as shown in the following table:
Relay 1 Relay 2 Relay 3 Relay 4
Factory settings Counting pulse Reset pulse Failure Upper stop position
Programmable Limit switch 1 Limit switch 2 Maintenance Maintenance
Relais 1/2 set to Counting/ Reset pulse:
The counting pulse output is used to connect an external digital counter or a PLC with counting input.
Reset pulse (terminal 6 and 7):
After start of measurement, a reset pulse is given. It is used to reset the connected evaluation device
(counter/ PLC, ...).
Counting pulse (terminal 5 and 6):
The counting pulse communicates the measured value to the connected evaluation device. During the
downward movement of the sensor weight, this pulse is generated according to the following table:
Relais 1/2 set to Limit switch:
It is possible to indicate two independent level limit switches. The limit switch signal is derivated from
the analogue measurement signal (details see Programming page 26)
Relay 3 - set to "Failure"
The relay indicates a failure (see also programming on page 27 and diagnostics "Failure" on page 37)
Relay 3 - set to "Maintenance"
The relay indicates a necessary maintenance (see also programming on page 27 and diagnostics
"Maintenance" on page 35)
Signal overview
Start
Reset
Counting
Timing
Signal input / output
Counting pulse
programmed to: ON OFF
10cm (1/3ft) / pulse 0.13s 0.13..0.3s
5cm (1/6 ft) / pulse 0.07s 0.07..0.15s
Nivobob®
1
2
3
4
5
6
7
8
9
10
11
12
NB 3000 b
gi020116
20