UWT Vibranivo VN 1000 Series User manual

Level limit switch
Series VN 1000 / 2000 / 5000 / 6000
Technical information / Instruction manual
page
Page
Safety notes/ Technical support 2
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Introduction 3
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Technical data 4
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Approvals 12
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Options 13
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Mounting 14
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Electrical installation 17
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Signal output/ Diagnostics 23
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Settings Sensitivity 28
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Maintenance 29
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Notes for use in Hazardous Locations 30
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Assembly VN ..040 33
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Assembly VN ..020/ VN ..030 with separate housing 38
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Disposal 40
Table of contents
Subject to technical change and price
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.
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VN 1000 / 2000 / 5000 / 6000 g gi180713 1

Level limit switch
Series VN 1000 / 2000 / 5000 / 6000
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 accompanying 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
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Level limit switch
Series VN 1000 / 2000 / 5000 / 6000
Technical information / Instruction manual
page
Introduction
Applications
The device is used for level monitoring in all types of containers
and silos.
It can be used with all powdery and granulated bulk materials
that do not show a strong tendency to form crusts or deposits.
Detection of solids in water is also possible.
The units can be delivered with a wide range of Ex-approvals
for use in Gas and Dust Hazardous Areas.
A selection of elds of
application:
• Building materials industry
lime, styrofoam, moulding sand, etc.
• Food industry
milk powder, our, salt, etc.
• Plastics industry
plastics granules etc.
• Timber industry
• Chemical industry
• Mechanical engineering
The VIBRANIVO oscillating probe is normally screwed into
the lateral container wall so that it is level with the lling
height to be registered and monitored.
The device can also be mounted from the top of the
container. In this case an extension piece is used to mount
the probe level with the height to be registered.
The length of the probe can be up to 4 m (157”) with an
extension tube (VN ..030) or up to 20 m (787”) with an
extension rope (VN 2050/ 6050).
The use of a sliding sleeve is recommended so that the
switch point can be changed easily during operation of the
device.
Function
The piezo-electrically stimulated oscillating fork vibrates
at its mechanical resonance frequency. If the probe is
covered by the bulk material, the damping thus generated is
registered electronically and a corresponding signal output
is actuated.
The oscillation of the fork ensures a certain self-cleaning.
Detection of solids Detection of solids in water
Application
in down pipe Application
in down pipe
optional
sliding sleeve
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VN 1030
VN 5030
VN ..050
VN ..030
VN ..040
VN ..020
VN ..030
VN ..040
VN ..020
VN ..020
VN 1020
VN 1030
VN 5020
VN 5030
VN 1020
VN 5020
VN 1020
VN 5020

Level limit switch
Series VN 1000 / 2000 / 5000 / 6000
Technical information / Instruction manual
page
Technical data
Housing versions
Series VN 1000/ 2000
Standard
Series VN 5000/ 6000
Standard
de
Explosionproof with
increased safety
terminal box
d
Flameproof/
explosionproof
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Level limit switch
Series VN 1000 / 2000 / 5000 / 6000
Technical information / Instruction manual
page
L
without option with option:
enhanced sensitivity (pos.26 x)
Vibrasil 70 (pos.26 a)
Vibrasil 90 (pos.26 b)
VN 1020
VN 5020 165 mm (6.5“)
VN 2020
VN 6020 235 mm (9.25”) 260 mm (9.84“)
Extensions
Thread Flange Temperature
extended shaft
(pos.3 2)
Option:
Separate housing
(pos.26 1/ pos.26 2)
Thread Temperature
extended shaft
(pos.3 2)
Flange
Technical Data
Triclamp
Triclamp With option
separate housing
(pos.26 1/ pos.26 2)
Cap nut: see page 16
* see page 6 bottom right
** Welding seam max. ø43.8 mm (ø1.72")
* see page 6 below right hand
** Welding seam max. ø43.8 mm (ø1.72")
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VN ..020
VN ..030

Level limit switch
Series VN 1000 / 2000 / 5000 / 6000
Technical information / Instruction manual
page
Thread Flange
Extension tube
NOT
part of delivery
* Length of oscillating rods
Thread
Technical data
Flange
Triclamp
* see bottom right
** Welding seam max. ø43.8 mm (ø1.72")
* see right
** Welding seam max. ø43.8 mm (ø1.72")
with option
Enhanced sensitivity
/ Vibrasil® 90
(pos.26 x / pos.26 b)
with option
Vibrasil® 70
(pos.26 a)
increased
vibrating
surface
(aluminium)
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VN ..040
VN ..050
VN 10..0 VN 20..0
VN 50..0 VN 60..0
Pos.
5 A G 1"
5 B NPT 1"
Pos.
5 L G 1"
5 M G 1"
5 S NPT 1"
5 T NPT 1"
5 U NPT 1"
G 1"
G 1"

Level limit switch
Series VN 1000 / 2000 / 5000 / 6000
Technical information / Instruction manual
page
Technical data
Electrical data
Connection terminals max. 4 mm2(AWG 12)
Cable entry M20 x 1.5 screwed cable gland
NPT ½“ conduit connection
NPT ¾” conduit connection (only VN 5000/ 6000)
Clamping range (diameter) of the factory provided cable glands:
M20 x 1.5: 6 .. 12 mm (0.24 .. 0.47")
Signal delay Sensor free -> covered ca. 1 sec
Sensor covered -> free ca. 1 .. 2 sec
On the electronic module “Universal voltage Relay DPDT” is an electronic delay, adjustable up to
30 sec.
Safety operation (FSL,FSH) Switchable for minimum or maximum safety
Sensitivity Adjustable in 2 levels (A/ B)
Vibration frequency VN 1000/ 5000: ca. 350 Hz
VN 2000/ 6000: ca. 125 Hz
ca. 90 Hz (enhanced sensitivity)
Installation category II
Pollution degree 2 (inside housing)
Electronic modules Universal voltage
Relay SPDT
(VN 1000/ 2000/ 5000/ 6000)
Universal voltage
Relay DPDT
(VN 1000/ 2000/ 5000/ 6000)
3-wire PNP
(VN 1000/ 2000/ 5000/ 6000)
Power supply 19 .. 230 V AC 50 - 60 Hz
19 .. 55 V DC
+10%
19 .. 230 V AC 50 - 60 Hz
19 .. 55 V (36 V*) DC
+10%
* Version with intrinsic safe
connection between Electronic
module and Vibrating fork
(see pos.4 in the selection list)
18 .. 50 V DC
+10%
Max. ripple of power supply 7 Vss at DC 7 Vss at DC 7 Vss
Installed load max. 8 VA/ 1.5 W max. 18 VA/ 2 W max. 1.5 W
Signal output Floating relay SPDT
VN 1000/ 2000:
AC max. 253 V, 4 A, 500 VA
at cos Phi = 1
DC max. 253 V, 4A, 60 W
VN 5000/ 6000:
AC max. 250 V, 8 A non inductive
DC max. 30 V, 5 A non inductive
Floating relay DPDT
VN 1000/ 2000:
AC max. 253V, 4 A, 500 VA
at cos Phi = 1
DC max. 253 V, 4 A, 60 W
VN 5000/ 6000:
AC max. 250 V, 8 A non inductive
DC max. 30 V, 5 A non inductive
Open Collector:
permanent load max. 0.4 A
short-circuit and overload
protected
turn-on voltage: max. 50 V
(reverse protection)
Intrinsic safe ratings - - -
Indicating light Status of signal output
by built-in LED
Status of signal output
by built-in LED
Status of signal output
by built-in LED
Isolation Power supply to signal output:
2225 Vrms
Power supply to signal output:
2225 Vrms
Signal output to signal output
(DPDT): 2225 Vrms
-
Protection class I I III
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Level limit switch
Series VN 1000 / 2000 / 5000 / 6000
Technical information / Instruction manual
page
Technical data
Electronic modules 2-wire
without contact
(VN 1000/ 2000/
5000/ 6000)
NAMUR
IEC 60947-5-6
(VN 2000/ 6000)
8/16 mA or 4-20 mA
(VN 1000/ 2000/
5000/ 6000)
8/16 mA
(VN 1000/2000/
5000/ 6000)
Power supply 19 .. 230 V 50/ 60 Hz/ DC
+10%
ca. 7 .. 9 V DC
(spec. IEC 60947-5-6)
Non intrinsic safe
version:
12.5 .. 36 V DC +0%
Intrinsic safe version:
12.5 .. 30V DC +0%
12.5 .. 36 V DC +0%
Max. ripple of power
supply
7 Vss at DC - - -
Installed load max. 1.5 VA/ 1 W max. 30 mA (for
non intrincic safe
application)
max. 0.8 W max. 0.8 W
Signal output Load current:
min. 10 mA
max. 500 mA permanent
max. 2 A <200 ms
max. 5 A <50 ms
Voltage drop on the
electronic module:
max. 7 V with closed
electric circuit.
Cutoff current with open
electric circuit:
max. 5 mA.
To enable a safe opening
of relay contacts, the
cutoff current will be set
for some milliseconds
to 0, when opening the
electric circuit.
Short-circuit- and
overload-protected.
<1 mA or >2.2 mA
(spec. IEC 60947-5-6)
Setting 8/16 mA:
8 mA or
16 mA ±0.5 mA.
Setting 4-20 mA:
Output current depends
on the vibration
amplitude of the fork
between 6 mA for
damped vibration and
20 mA for full vibration.
Resolution is 0.1 mA.
8 mA or 16 mA
±1 mA
Intrinsic safe ratings - U i 20 V
I i 67 mA
Pi 0.17 W
C i negligible small
Li negligible small
Intrinsic safe version:
U i30 V
I i 130 mA
Pi 0.8 W
C inegligible small
L i negligible small
-
Indicating light Status of signal output
by built-in LED
Status of signal output
and
diagnostics of vibration
by built-in LED
Status of signal output
and
diagnostics of vibration
by built-in LED
Status of signal
output
by built-in LED
Protection class IIII III III
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Level limit switch
Series VN 1000 / 2000 / 5000 / 6000
Technical information / Instruction manual
page
Mechanical data
Housing Aluminium housing, powder coated RAL 5010 gentian blue
Seal between housing and lid: NBR
Seal between housing and process connection: NBR
Nameplate: polyester lm
Cable for separate housing Silicone elastomer, ø10 mm (ø0.39"), surface resistance <109Ohm, UV-resistent, min. bending
radius 50 mm (1.97")
Degree of protection VN 1000/ 2000: IP66*
VN 5000/ 6000: NEMA Type 4X, IP66*
* IEC/ EN 60529
Process connection/
extension L
VN ..020/ ..030/ ..050: Stainless steel 1.4301 (304)* or 1.4404 (316L)
VN ..40: Stainless steel 1.4305 (303)* or 1.4404 (316L)
* Flanges 1.4541 (321). The listed or higher-quality corrosion-resistant materials can be used.
Filler materials are not listet.
Extension cable VN ..050: PUR with carbon black (no food grade)
Thread: R 1½“ tapered EN 10226 or NPT 1½“ tapered ANSI B 1.20.1
Triclamp: Stainless steel 1.4301 (304) or 1.4404 (316L)
2" (DN50) ISO 2852
Flanges according to selection
Oscillator Material: stainless steel 1.4404 (316L) (food grade)
Surface treatment of vibrating rods: polished, Ra ≤0.75 μm; teon (on request)
Sound level max. 50 dBA
Overall weight
(ca.)
.
Technical data
VN 1000/ 2000 Standard
housing
Extension
VN 1020/ 2020: 1.6 kg
(3.5 lbs) -
VN 1030/ 2030: 1.6 kg
(3.5 lbs)
+2.5 kg/m
(+5.5 lbs per 39.3“)
VN 1040/ 2040: 2.0 kg
(4.4 lbs)
delivery without
extension tube
VN 1050/ 2050: 4.0 kg
(8.8 lbs)
+0.5 kg/m
(+1.1 lbs per 39.3”)
VN 5000/ 6000 Standard
housing
de-housing d-housing Extension
VN 5020/ 6020: 2.1 kg
(46 lbs)
3.2 kg
(7 lbs)
2.8 kg
(6.2 lbs) -
VN 5030/ 6030: 2.1 kg
(4.6 lbs)
3.2 kg
(7 lbs)
2.8 kg
(6.2 lbs)
+2.5 kg/m
(+5.5 lbs per 39.3“)
VN 5040/ 6040: 2.5 kg
(5.5 lbs)
3.6 kg
(7.9 lbs)
3.2 kg
(7 lbs)
delivery without
extension tube
VN 5050/ 6050: 4.5 kg
(9.9 lbs)
5.6 kg
(12.3 lbs)
5.2 kg
(11.4 lbs)
+0.5 kg/m
(+1.1 lbs per 39.3”)
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Level limit switch
Series VN 1000 / 2000 / 5000 / 6000
Technical information / Instruction manual
page
Technical data
Operating conditions
Ambient temp. (housing) -40°C .. +60°C (-40 .. +140°F) VN ..020/ VN ..030 and VN ..040
-25°C .. +60°C (-13 .. +140°F) VN ..050
Process temperature -40°C .. +150°C (-40 .. +302°F) VN ..020/ VN ..030 and VN ..040
Mounting for process temperature up to 150°C (302°F): see
drawing
-40°C .. +110°C (-40 .. +230°F) VN ..020/ VN ..030 with Ex approval and separate housing
(price list option 26.1, 26.2)
-25°C .. +80°C (-13 .. +176°F) VN ..050
Ventilation Ventilation is not required
Min. powder density Setting B
VN 1000/ 5000: ca 50 g/l (3 lb/ft3)
VN 2000/ 6000: ca 20 g/l (1.2 lb/ft3)
ca 5 g/l (0.3 lb/ft3)
< 5 g/l (0.3 lb/ft3)
< 5 g/l (0.3 lb/ft3)
Setting A
ca 150 g/l (9 lb/ft3)
ca 75 g/l (4.5 lb/ft3) Standard version
ca 20 g/l (1.2 lb/ft3) Enhanced sensitivity (pos. 26x)
< 20 g/l (1.2 lb/ft3) Vibrasil® 90 (pos. 26b)
< 20 g/l (1.2 lb/ft3) Vibrasil® 70 (pos. 26a)
Due to the increased vibrating surface the Vibrasil® 70 is
even more sensitive than the Vibrasil® 90.
Features of bulk
material
No strong caking tendancies
Max. grain size 10 mm (0.39“)
Max. mechanical load 600 N laterally (on oscillator rods)
Recommended protection in case of high material load: mounting of a protective canopy above the
probe.
Max. mechanical torque 300 Nm VN ..030
100 Nm VN ..040
Max. tractive force 2 kN VN ..050
Max. process pressure 16 bar (232 psi) VN ..020, VN ..030
16 bar (232 psi) VN ..040 (depending on the quality of the local mounted sealing
of the extension tube)
6 bar (87 psi) VN ..050
The max. process pressure may be reduced with use of anges. Observe ange standards for pressure
rating and pressure derating with higher temperature.
For versions with Ex-approvals: see remarks on page 31.
Vibration 1.5 (m/s2)2/Hz according to EN 60068-2-64
Relative Humidity 0 - 100%, suitable for outdoor use
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.
For versions with
Ex-approvals:
see remarks on
page 33.
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Level limit switch
Series VN 1000 / 2000 / 5000 / 6000
Technical information / Instruction manual
page
Technical data
Transport and Storage
Transport 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%
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Level limit switch
Series VN 1000 / 2000 / 5000 / 6000
Technical information / Instruction manual
page
Approvals
Ordinary
Locations*
•
•
•
•
•
•
•
•
•
•
CE
FM/ CSA
TR-CU
EN 61010-1
Hazardous
Locations *
•
•
•
•
•
•
•
•
•
•
•
•
ATEX Dust explosion
Gas explosion Intrinsic safe
Flameproof
Flameproof/ increased safety
ATEX II 1/2 D Ex ta/tb IIIC T! Da/Db
ATEX II 1G Ex ia IIC T! Ga and
1/2G Ex ia IIC T! Ga/Gb
ATEX II 2G Ex db [ia Ga] IIC T! Gb
ATEX II 2G Ex db eb [ia Ga] IIC T! Gb
•
•
•
•
•
•
•
•
•
•
•
•
IEC-Ex Dust explosion
Gas explosion Intrinsic safe
Flameproof
Flameproof/ increased safety
IEC-Ex ta/tb IIIC T! Da/Db
IEC-Ex ia IIC T! Ga and Ga/Gb
IEC-Ex db [ia Ga] IIC T! Gb
IEC-Ex db eb [ia Ga] IIC T! Gb
•
•
•
•
•
•
•
•
FM Dust explosion
Gas explosion
Gas explosion
Gas explosion
Intrinsic safe
Flameproof
Flameproof/ increased safety
Cl. II, III Div. 1 Gr. E,F,G
IS Cl. I Div. 1 Gr. A-D
Cl. I Zone 0 and 0/1 AEx ia IIC
XP-IS Cl. I Div. 1 Gr. B-D
Cl. I Zone 1 AEx d [ia] IIC
Cl. I Zone 1 AEx de [ia] IIC
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
CSA
TR-CU
Dust explosion
Gas explosion
Gas explosion
Gas explosion
Dust explosion
Gas explosion
Intrinsic safe
Flameproof
Flameproof/ increased safety
Intrinsic safe
Flameproof
Flameproof/ increased safety
Cl. II, III Div. 1 Gr. E,F,G
Ex DIP A20 and A20/21
IS Cl. I Div. 1 Gr. A-D
Cl. I Zone 0 and Zone 0/1 Ex ia IIC
XP-IS Cl. I Div. 1 Gr. B-D
Cl. I Zone 1 Ex d [ia] IIC
Cl. I Zone 1 Ex de [ia] IIC
Ex ta/tb IIIC T! Da/Db X
Ex ia IIC T! Ga X and
Ex ia IIC T! Ga/Gb X
Ex d [ia] IIC T! Gb X
Ex de [ia] IIC T! Gb X
•••
•
•
•
•
•
•
•
INMETRO Dust explosion
Gas explosion Intrinsic safe
Flameproof
Flameproof/ increased safety
Ex ta/tb IIIC T! Da/Db IP6X
Ex ia IIC T! Ga/Gb and
Ex ia IIC T! Ga
Ex d IIC T! Gb
Ex d [ia Ga] IIC T! Gb
Ex de IIC T! Gb
Ex d e [ia Ga] IIC T! Gb
EMC • • • • EN 61326 -A1
RoHS conform • • • • According to directive 2011/65/EU
Food grade
material
• • • • According to directive 1935/2004/EC
Pressure
Equipment
Directive
(2014/68/EU)
The units are not subject to this directive, because they are classied as „pressure-keeping
equipment“ and do not have a pressurized housing (see Art.1, clause 2.1.4).
The units are designed and manufactured in accordance to the Pressure Equipment Directive.
The units are NOT intended for use as a “equipment part with safety function (Art.1, clause 2.1.3).
If the units should be used as „equipment part with safety function, please contact the
manufacturer.
* depending on selected version in the selection list.
VN 1000 VN 2000 VN 5000 VN 6000
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Level limit switch
Series VN 1000 / 2000 / 5000 / 6000
Technical information / Instruction manual
page
Options
Weather protection-
cover
When the measuring device is used outdoor, the use of the
weather protection-cover is recommended. It protects the
device from all atmospheric inuences such as:
• rain water
• condensation of water
• excessively high temperatures due to insolation
• excessively low temperatures in winter
Material: PE, weather and temperature stable
Not available for housing version d and de.
For use in Hazardous Locations: only permitted for zone 2
and 22 or Division 2.
.
Sliding sleeve VN ..030 G2“ ISO 228 or 2” NPT ANSI B 1.20.1
Material: 1.4301 (304) or
1.4404 (316L)
Sealing material to the extension tube: viton
Max 16bar (232psi), 150°C (302°F)
VN ..040 Because the outer diameters of the locally
mounted 1“ tube may differ, sliding sleeve on
request.
Not for Hazardous Locations.
Mounting set Screws and washers for xing the unit
on a ange.
Glass window in lid To see the indicating light on the electronic module from
outside.
Not available for housing version d and de.
Control lamp Bright indicating light (LED) seen from outside.
Not available for use in Hazardous Locations.
Plug 4-pole (incl. PE) Used instead of cable gland.
Not available for use in Hazardous Locations and FM/ CSA
general Purpose.
LED
Glass
window
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Level limit switch
Series VN 1000 / 2000 / 5000 / 6000
Technical information / Instruction manual
page
Detection of solids in water CAUTION:
Detection of solids in water only permitted with types VN 1020/ 1030/ 5020/ 5030.
Other types on request.
Process pressure Improper installation may result in loss of process pressure.
Chemical resistance
against the medium
Materials of construction are choosen based on their chemical compatibility (or inertness) for
general purposes. For exposure to specic environments, check with chemical compatibility charts
before installing.
VN ..050:
Consider the chemical compatibility of the extension cable (material PUR) and the rubber seals on
both ends of the extension cable (material neoprene).
Mechanical load The torque at the fastening spot must not exceed
300 Nm (VN ..030) or
100 Nm (VN ..040)
Maximum length „L“ in relation
to the deviation (in degrees) from vertical installation:
Mounting location Comply with distance from incoming material and from the silo wall.
The installation has to be done in a way, that the sensor elements cannot hit the wall of the silo. The
ow of the medium and xtures in the container must be considered. This is especially important
for extension lengths of more than 3 m (118.1“).
2“ sliding sleeve Tighten both locking screws M8 with 20 Nm
to obtain resistance against pressure.
Flange mounting A plastic sealing must be used to tighten the ange.
Fastening of the 1½”
process connection
Mounting torque for the 1½” thread may not exceed 80 Nm.
Use a 50 mm (1.97“) open-end wrench (do not turn the housing).
Food grade material The materials are available for the use under nornal and predictable applications (according to
directive 1935/2004 Art.3). Other conditions can inuence the safety.
Max. deviation Max. length “L”
5° 4,000 mm (157.5“)
45° 1,200 mm (47.24“)
>45° 600 mm (23.62“)
Load
Mounting
General Safety Instructions
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Level limit switch
Series VN 1000 / 2000 / 5000 / 6000
Technical information / Instruction manual
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Oscillating rods Do not bend, shorten or extend the oscillationg rods since this will destroy the device.
Rotatable housing and
orientation marking of
oscillating rods
Direction of the cable glands When the unit is mounted from the side, ensure, that the cable glands are closed and face
downwards to avoid water penetrating the housing.
Sealing Seal the 1½” thread with Teon tape in case of process pressure
Precaution for later
dismounting/ Service
Grease the screws of the lid if corrosive atmosphere is present (e.g. close to sea)
Switching point Heavy bulk material -> the signal output switches, when the oscillating rods are covered a few mm.
Light bulk material -> the signal output switches, when the oscillating rods are covered a few cm.
The housing can be rotated against the
threaded connection after mounting.
For the d- and de- housing:
Fixing screw must be unfastened to
enable rotation. Fix the screw again,
when the housing has the right
position.
Orientation marking of oscillating
rods shows the orientation of the
oscillating rods after mounting. Fixing screw Housing
Additional Safety Instructions for Hazardous Locations
Installation regulations For the use of devices in Hazardous Locations the respectively valid installation regulations must
be observed.
Sparks The installation has to be carried out in a way, that mechanical friction or impact does not cause
sparks between the aluminium enclosure and steel.
Mounting in application with
Partition wall, that separates
Zone 0 (Cat. 1G) from Zone 1
(Cat 2G).
VN ..030 with sliding sleeve: The use of the sliding sleeve is not allowed.
VN ..040 and VN ..050:
The unit has no safe separation between Zone 0 and Zone 1. It must be considered, that gas can
pass from Zone 0 through the unit to Zone 1.
Mounting instructions
Threaded connection
Mounting
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Level limit switch
Series VN 1000 / 2000 / 5000 / 6000
Technical information / Instruction manual
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2“ sliding sleeve
Switch point can be set CAUTION:
Detection of solids in
water only permitted with
the types VN 1020/ 1030/
5020/ 5030.
Other types on request.
Bulk material
slides down more
easily, if the device
is mounted with
inclination
(recommended)
Sensitive
area
Full detector
Empty detector
Observe max. torque
Empty
detector
Protective canopy in case of
high mechanical loading
(approx. 200 mm (7.87“)
distance)
Installation in the conical
part: only for trickling
material, that cannot be
pressed between the
vibration rods.
CORRECT
WRONG
Orientation marking of oscillating rods
faces sideways.
Working surface too large:
-> overload, if material is discharged
-> danger of caking or crust deformation
CORRECT
Vibrating rods lead
into the product
WRONG
Socket too long:
material chokes
socket
VN ..050
Observe max. tensile load
(also imparted to silo roof)
Mounting
VN ..020 or
VN ..030 or
VN ..040
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VN ..050 VN ..030
VN ..040
VN ..030

Level limit switch
Series VN 1000 / 2000 / 5000 / 6000
Technical information / Instruction manual
page
Electrical installation
General Safety Instructions
Handling In case of inexpert 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.
With use of 24 V supply voltage, an approved power supply with reinforced insulation to mains is
required.
Fuse Use a fuse as stated in the connection diagrams (page 22 and 23).
RCCB protection In the case of a defect, the distribution voltage must automatically be cut off by a RCCB protection
switch to protect the user of the device from indirect contact with dangerous electric tensions.
Power supply switch A voltage-disconnecting 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 electronic module and name
plate before switching the device on.
Cable gland 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 locked with a closing element.
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 closing 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 250V 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.
Connecting the terminals Make sure that max. 8 mm (0.31“) of the pigtails are bared (danger of contact with live parts).
Guiding the cables in the
terminal box
Cut the eld wiring cables to appropriate length to t properly into the terminal box.
Relay and transistor
protection
Provide protection for relay contacts and output transistors to protect the device against inductive load
surges.
Protection against static
charging
The housing of the unit (and for the version with separate housing also the vibrating fork part) must
be grounded to avoid static charging of the unit. This is particularly important for applications with
pneumatic conveying and non-metallic containers .
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Level limit switch
Series VN 1000 / 2000 / 5000 / 6000
Technical information / Instruction manual
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Additional Safety Instructions for Hazardous Locations
Installation in Zone 20 If installing the whole unit in zone 20, the power supply shall be rated for a prospective short circuit
current of not more than 10 kA. Details of EN 60079-14/ ABNT NBR IEC 60079-14 must be obeyed.
Installation in Zone 0
(Electronics: „NAMUR“
and “8/16mA or 4-20mA”)
The intrinsic safe supply circuit must have galvanic isolation to non intrinsic safe part. Otherwise
measures for protection against lightning must be taken. See EN 60079-14/ ABNT NBR IEC 60079-14.
Power supply
(Electronics: „NAMUR“
and “8/16mA or 4-20mA”)
The type of protection (intrinsic safe) is only valid when connecting to a certied intrinsic safe power
supply (associated apparatus).
Field wiring terminals for
“de” housing
Fixing torque : 0,5-0,6 Nm
Remove wire isolation: 9 mm
Field wiring A strain relief must be provided for the eld wiring cables, when the device is installed with the factory
provided cable glands.
External equipotential
bonding terminal
Connect with
equipotential Version with seperate housing must be
bonding to grounded additionally at the vibrating fork.
the plant
Cable glands and conduit
system for ATEX/
IEC-Ex/ TR-CU
(Dust and Gas Hazardous
Locations)
Installation according to the regulations of the country, where the product is installed.
Not used entries have to be closed with blanking elements certied for this purpose.
Where available the factory provided parts must be used.
A strain relief must be provided for the eld wiring cables, when the device is installed with the factory
provided cable glands.
The diameter of the eld wiring cable must match to the clamping range of the cable clamp.
If other than the factory provided parts are used, following must be ensured:
The parts must have an approval adequate to the approval of the level sensor (certicate and type of
protection).
The approved temperature range must be from the min. ambient temperature of the level sensor to the
max. ambient temperature of the level sensor increased by 10 Kelvin.
The parts must be mounted according to the instructions of the supplier.
Installation of a ameproof/ explosion proof enclosure with a conduit system:
In a conduit system single electric conductors are installed in a certied pipe system. This pipe system
is in a ameproof/ explosion proof construction as well. The ameproof/ explosion proof enclosure
and the pipe system needs to be sealed from each other by a certied ameproof seal of a type “d”
or explosion proof of a type “XP”.This seals shall be installed directly in or at the conduit entries of
the ameproof/ explosion proof enclosure. Not used entries have to be closed with blanking elements
certied for this purpose (ameproof type “d” or explosion proof type “XP”).
Electrical installation
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Technical information / Instruction manual
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Conduit system for
FM and CSA
(Dust and Gas Hazardous
Locations)
General requirements:
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 of at least –40°C (-40°F)
to +80°C (176°F). In addition they shall be suitable for the conditions and correctly installed. Where
available the provided original parts of the manufacturer must be used.
Installation of a ameproof enclosure “d” with a conduit system:
In a conduit system single electric conductors are installed in a certied pipe system. This pipe system
is in a ameproof construction as well. The ameproof enclosure “d” and the pipe system needs to be
sealed from each other by a certied ameproof seal. Conduit entries of a ameproof enclosure “d”
shall have installed the ameproof seal within 18 inches from the enclosure wall. Not used entries have
to be closed with adequate blanking elements of a certied ameproof type AEx Cl.1 Div.1 A.
Commissioning Commissioning only with closed lid.
Exception: Units with protection method Intrinsic safety (“NAMUR” and “8/16 mA or 4-20 mA”)
Opening the lid Units with ameproof GasExplosion approval (d-housing):
To prevent ignition of hazardous atmospheres, do not remove the lid (cover) while circuits are alive.
Units with Dust Explosion approval:
Before opening the lid ensure, that no dust deposits or cloudss are present.
Do not remove the lid (cover) when the power is live.
Units with protection method Intrinsic safety (“NAMUR” and “8/16 mA or 4-20 mA”):
The lid can be removed when the power is live.
Electrical installation
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Level limit switch
Series VN 1000 / 2000 / 5000 / 6000
Technical information / Instruction manual
page
Electrical installation
VN 1000/ 2000: Standard-housing
Ground-terminal on the
electronic module is connected
internally to the housing
(not all versions)
Connecting
terminals
Protective
Conductor
Terminal
VN 5000/ 6000: Standard- and d-housing
Connection is done directly
on the Electronic module
Ground-Terminal on the
electronic module is connected
internally to the housing (not all
versions)
Protective
Conductor
Terminal
Connecting
terminals
de-housing
Connection via the terminals
inside the increased safety area.
Protective
Conductor
Terminal
Connection
terminals
Connection
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