NetterVibration VibroScanner VSI User manual

Operating instructions for
vibration measuring systems
VibroScanner VSI
July 2020
No. 1901E
Page 1/19
These operating instructions apply to:
vibration measuring systems
series VibroScanner VSI

2
Contents
1General information 3
2Safety 5
3Technical data 7
4Design and function 9
5Transport and storage 13
6Installation 14
7Start-up and operation 15
8Maintenance and servicing 17
9Troubleshooting 18
10 Spare parts and accessories 19
Please refer to the delivery note for the scope of delivery.
Check the packaging for possible transport damage. In the event of
damage to the packaging, check the contents for completeness and
possible damage. Inform the carrier in the case of damage.
The vibration measuring systems series VibroScanner VSI are hereafter
referred to as "VSI".
Document no.
1901E
Version no.
1
Date of issue
July 2020
Scope of
delivery
Designation
Version of
document

General information
3
1 General information
Before installing the VSI read these instructions carefully. It is the basis for
any action when dealing with the VSI, and may be used for training pur-
poses. The instructions should be subsequently stored at the operation
site.
The target group for these instructions is technical staff, who have basic
knowledge in mechanics and electrics.
Only complying technical staff may work on the VSI.
The VSI may only be installed, put into operation, maintained, troubleshot
and disassembled by persons authorised by the operator.
This documentation is protected by copyright.
Netter Vibration reserves all rights such as translations, reprinting and re-
production of the instructions, as well as parts thereof.
All technical information, data and instructions for installation, operation
and maintenance in these instructions are based on the latest information
available at the time of printing and take our past experience to the best of
our knowledge into account.
No claims can be derived from the information, illustrations and descrip-
tions in these operating instructions.
The manufacturer does not assume liability for damages resulting from:
failure to observe the instructions,
improper use,
unauthorised repairs,
technical modifications,
use of non-permissible spare parts.
Translations are made to the best of our knowledge.
Netter Vibration does not assume liability for translation errors, even if the
translation was made by us or on our behalf. Only the original German text
remains binding.
The vibration measuring systems series VibroScanner VSI are build ac-
cording to the following standards and directives:
2014/35/EU low voltage directive
2014/30/EU electromagnetic compatibility directive
DIN EN 60204-1
DIN EN 61010-1
DIN EN 61326-1
The rules and regulations of the local associations for electrical engineer-
ing apply (e. g. IEC, VDE, OEVE, SEV, etc.).
Use and
storage
Target group
Copyright
Limitation of
liability
Directives /
standards
observed

General information
4
The following instruction and warning symbols are used in these instruc-
tions:
DANGER
indicates an immediate danger.
Disregard of this notice will result in death or severe person-
al injuries.
WARNING
indicates a potential danger.
Disregard of this notice can result in death or severe per-
sonal injuries.
CAUTION
indicates a potentially dangerous situation.
Disregard of this notice can result in minor or moderate per-
sonal injuries.
NOTICE
indicates potential material damage.
Disregard of this notice can result in material damage.
IMPORTANT
indicates actions, methods or notes that are not relative to safety, e.g. use-
ful information and tips.
Environmentally safe disposal
indicates the obligation of environmentally safe disposal.
Instruction
and warning
symbols
Personal
injuries
Material
damages
Notes

Safety
5
2 Safety VSI controllers are intended for assembly in switch cabinets and control
cabinets. VSI sensors are intended for installation in vibration systems.
VSI are used to measure the acceleration and dominant frequency of me-
chanical vibrations by means of an acceleration sensor.
Possible applications are the measurement of the operational parameters
of vibration systems, e. g. frequencies and effective accelerations in vibra-
tion feeders and conveyors, vibration compactors or vibration test sys-
tems.
Any other use is considered improper.
Installation, commissioning, maintenance and troubleshooting of the VSI
may only be performed by authorised qualified personnel.
All handling of the VSI is the responsibility of the operator.
DANGER
Risk of electric shock due to high voltage
Live parts can cause severe injuries or even death.
The electrical installation may only be carried out by au-
thorized qualified personnel.
Control cabinet doors must not be opened during opera-
tion.
All work on the system may only be carried out in a volt-
free state.
Observe the permissible protection class and protective
grounding. The VSI may only be operated with the cor-
rect connection of the protective conductor.
Perform all work only with insulated tools suitable for the
application.
Intended use
Qualification
of qualified
personnel
High voltage

Safety
6
DANGER
Electric shock
An electric shock will result in serious injury or even death.
The VSI must be free of voltage during assembly, start-up,
maintenance and troubleshooting.
Observe the following five safety rules:
1. Disconnect the VSI from the mains supply.
2. Secure the VSI against re-activation.
3. Establish that the VSI has no voltage.
4. Earth and short-circuit the power supply of the VSI.
5. Cover adjacent live parts or fence them off.
DANGER
Danger of electric shock due to high voltage
Live parts can cause severe injuries or even death.
Lay electrical cables carefully. Make sure that electrical
cables are not worn through vibrating parts or sharp
edges.
Check the perfect condition of the electric cables regular-
ly. Detected errors must be eliminated immediately.
NOTICE
When fastening the sensor of the VSI using the fastening thread, the max-
imum screw-in depth (10 mm) must be observed, otherwise the sensor
can be damaged
Safety
rules
Electric shock
Maximum
screw-in depth

Technical data
7
3 Technical data
Controller (measuring unit)
Series
Netter VSI
Operating voltage
24 V DC (+/- 10 %), residual ripple < 0,1 V
Ambient temperature
0 °C to 40 °C
Humidity
The relative humidity should not exceed 60%
Degree of protection
IP 20
Sensor with cable
Ambient temperature
0 °C to 40 °C
Degree of protection
IP 65
Cable length between
sensor and controller
max. 3 m (unscreened)
max. 10 m (screened)
Shock acceleration
max. 10.000 g
Parameters Controller
Current output
8-pin connection terminal
Voltage output
8-pin connection terminal
Connection for sensor
4-pin connection terminal
Dimensions [mm]:
w: 114 / h: 76 / d: 31
Mounting
On mounting rail according to DIN EN 50022 (DIN EN 60715)
or for direct wall mounting
Acceleration measurement
Display: a rms
Root mean square (RMS) displayed as a multiple of the ac-
celeration due to gravity (1 g = 9,81 m/s²)
Measuring range
0 to 12 g (depending on the default setting)
Resolution
(in the measuring range
35 Hz)
2 g: +/- 0,002 g / 4 g: +/- 0,004 g /
8 g: +/- 0,008 g / 12 g: +/- 0,0012 g
Frequency measurement
Display: F
Hz
Measuring range
0 to 300 Hz (depending on the default setting)
Resolution
+/- 0,001 Hz
Permissible
operating
conditions
Parameters
controller

Technical data
8
Parameters sensor
Design type
MEMS-sensor
Connection
4-pin via round connector M12 x 1 (preferably with union
screw and integrated screw lock)
Dimensions [mm]:
Ø 14,5 mm / SW13; height sensor with plug = 75 mm
X
Fastening thread M6
Maximum screw-in depth 10 mm
PIN assignment sensor cable
Connector VSI
1
brown
2
white
3
blue
4
black
Dimensions
sensor
Parameters
sensor
PIN assign-
ment
sensor cable

Design and function
9
4 Design and function
No.
Element
Function
1
Controller/measuring unit
Contains the electronic components, the connec-
tions and the display.
2
Button: configuration
Setting the values shown on the display.
3
Display
Shows measured values.
4
DIP-switch
Configure controller.
5
Connection terminal:
current output and power
supply
Connect current output and power supply.
6
Connection terminal:
Voltage output and power
supply
Connect voltage output and power supply.
7
Connection terminal: sensor
Connect sensor with the controller.
8
Sensor with sensor cable
Acquires values for acceleration and frequency
on vibration systems. Is connected to the control-
ler via the sensor cable.
The VSI consists of an acceleration sensor and a controller, via which both
the voltage supply of the sensor and the signal evaluation takes place.
The VSI are used to measure the acceleration, the dominant frequency
and the vibration amplitude of mechanical vibration using a capacitive, mi-
cromechanical (MEMS) sensor.
The VSI enables continuous quantitative process control and can there-
fore contribute significantly to the long-term successful operation of a vi-
bration system.
Design
Function

Design and function
10
A vibration is the periodic variation of a parameter (e. g. displacement of a
plate) caused by the fact that a system is displaced from its stable equilib-
rium due to a disturbance and forced back towards its original state by a
restoring force. A well-known example from everyday life is a pendulum
which after displacement by an external force is drawn back into the equi-
librium position by gravity.
A harmonic vibration, where displacement, velocity and acceleration in
relation to time show the shape of a sinusoidal wave, represents an ideal-
ized special case. In this case only few parameters are needed to describe
the shape of the vibration and mathematical principles can be derived very
easily.
In practice, the acceleration in relation to time in vibration systems mostly
deviates from this ideal sinusoidal wave; either because the vibration drive
itself does not generate a harmonic vibration (e. g. special pneumatic line-
ar vibrators) or because interfering factors like vibrating or hitting compo-
nents or natural vibrations of an excited product overlay the excited vibra-
tion.
To describe a harmonic vibration, three parameters are needed: Frequen-
cy (unit of measurement: 1 Hz = 1/s), amplitude and phase. The frequency
determines how many vibration cycles per second occur, the amplitude
determines the maximum value of the vibration and the phase indicates in
how far the zero position of the vibration is shifted in relation to the zero
point on the time scale. The time required for one cycle of vibration (recip-
rocal of the frequency) is called period.
Figure: Acceleration of a harmonic (sinusoidal) vibration
1
Acceleration
(y-axis)
2
RMS (Root
Mean Square)
3
Phase
4
Amplitude
5
Period
6
Time (x-axis)
7
Peak-to-Peak
value (vibration
amplitude)
As the zero position and thus the amplitude often are difficult to access for
measuring purposes, sometimes the difference between maximum and
minimum value, the so called peak-to-peak value, is indicated instead. The
peak-to-peak value of the displacement is also called stroke.
Basics of
vibration
measurement
Harmonic
vibrations
Peak-to-Peak
value

Design and function
11
A further important parameter is the Root Mean Square (RMS) or effective
value. The RMS value of a time-dependent parameter a (t) in a time inter-
val T is defined as the root of the sum of the squared measured values
which has been divided by the time interval before:
In case of a harmonic vibration the RMS is about 71% of the amplitude
(exactly ). The advantage as compared to amplitude or peak-to-peak
value is that small variations of the minimum or maximum acceleration
have only little effect on the RMS, as an average value is ascertained over
a time interval instead of only considering peak values at a time. This is
the reason why it is better suited to ascertain the actual effect a vibration is
having on a machine part or product over a longer period of time.
Random vibration wave forms can be described mathematically as super-
position of several harmonic vibrations varying in frequency, amplitude and
phase. The more complex and “sharp-edged“ the shape of a vibration is,
the more harmonic vibration components are needed to describe it with
sufficient accuracy. Usually random vibrations are characterized by means
of the frequency spectrum which indicates the portion each harmonic vi-
bration component with fixed frequency contributes to the overall vibration.
Figure: Acceleration of a non-sinusoidal periodic vibration
1
Acceleration
(y-axis)
2
Positive amplitude
3
Negative amplitude
4
Period
5
Time (x-axis)
6
Peak-to-Peak value
(vibration ampli-
tude)
7
RMS (Root mean
square)
Root Mean
Square
RMS
Random
vibrations

Design and function
12
Figure:
Spectrum of a sinusoidal vibration with a
frequency of 10 Hz.
Figure:
Spectrum of a random vibration with a domi-
nant frequency of 10 Hz
1 Power
2 Frequency (Hz)
Also for more complex types of vibration it is common use in vibration
technology to indicate only one frequency which dominates the system to
be measured. The relevant period is ascertained between two points of
time in a row where the value of the oscillating quantity reaches its maxi-
mum (or minimum).
The VSI show the frequency which contributes at least 50% to the power
of the overall vibration. Thus it is possible, for instance, to read out the ex-
act value of the excitation frequency of a vibration drive without any affect
on the measurement by low or high frequency interference.

Transport and storage
13
5 Transport and storage
Special conditions of transport are not required.
The VSI are packed ready for installation.
The packaging protects the VSI from transport damage. The packaging
material has been selected from an environmentally safe and technically
disposable point of view and is therefore recyclable.
The return of packaging to the material cycle conserves raw materials and
reduces the amount of waste.
Store the VSI in a dry and clean environment.
The permissible storage temperature is between 0 °C and +40 °C.
The permissible relative humidity is max. 60 %.
Do not store the VSI outdoors. The electrical components are not pro-
tected against corrosion.
Transport
conditions
Packaging
Storage

Installation
14
6 Installation
Observe the safety instructions in Ch. Safety, from page 5 on.
Mount the controller on a standard mounting rail in a suitable control cabi-
net (Degree of protection IP 65).
Controller of the VSI requires an operating voltage of 24V DC.
Depending on the configuration of the DIP switches, the connection is
made via the current outputs or voltage outputs.
Pin assignment of the current output
PIN 1: GND
Ground frequency
PIN 2: Frequency
Frequency
PIN 3: GND
Ground acceleration
PIN 4: Acceleration
Acceleration
PIN 5: GND
Ground stroke (vibration ampli-
tude)
PIN 6: Stroke
Stroke (vibration amplitude)
PIN 7: 0 V
Ground power supply
PIN 8: +24V
Power supply
Pin assignment of the voltage output
PIN 1: GND
Ground frequency
PIN 2: Frequency
frequency
PIN 3: GND
Ground acceleration
PIN 4: Acceleration
Acceleration
PIN 5: GND
Ground stroke (vibration ampli-
tude)
PIN 6: Stroke
Stroke (vibration amplitude)
PIN 7: 0 V
Ground power supply
PIN 8: +24V
Power supply
The sensors are attached directly to the vibrating application part via the
fastening thread (M6, max. screw-in depth 10 mm) or with a plastic clamp
bracket or a rubberized pipe clamp. Make sure that in case of linear vibra-
tions the longitudinal axis of the sensor is to be aligned parallel to the di-
rection of vibration.
Connect the sensor cable with the sensor. The plug is protected against
polarity reversal. Tighten the union screw hand-tight. Do not use a tool.
Insert the plug of the sensor cable into the 4-pin connection terminal on
the controller.
Mount the
controller
Connect the
controller
Mount the
sensor
Connect the
sensor

Start-up and operation
15
7 Start-up and operation
Observe the safety instructions in Ch. Safety, from page 5 on.
Please refer to Ch. Technical data, page 7 for permissible operating condi-
tions.
Installation work as well as operation of the system are to be carried out
taking the valid accident prevention regulations into account.
The operator is responsible for the proper condition of the system.
Carry out the following measures before start-up:
1. Check the mains voltage and the grid feed-in.
2. Check that the system is in perfect electrical condition.
3. Check that all protective measures on the system have been ob-
served.
4. Check that the cables are undamaged and laid according to the
known regulations and standards.
5. Eliminate possible errors.
Permissible
operating
conditions
Regulations
Measures

Start-up and operation
16
The VSI can be supplied with voltage via the two connection terminals.
The connection of the power supply and the definition of measuring rang-
es depends on the configuration of the DIP switches on the controller.
Configuration of the DIP switches
Switch 1
OFF = voltage outputs
ON = current outputs
Switch 2
OFF = measuring range vibration
amplitude up to 49 mm
ON = measuring range vibration
amplitude up to 99 mm
Switch 3 + 4
binary coded
Measuring range acceleration:
00 = 2 g
01 = 4 g
10 = 8 g
11 = 12 g
Switch 5 + 6
binary coded
Measuring range frequency:
00 = 35 Hz
01 = 75 Hz
10 = 150 Hz
11 = 300 Hz
Indicated values /
symbols
Description
F
Frequency [Hz]
Harmonic (sinusoidal) vibration
Non-harmonic (sinusoidal) vibration
arms
Acceleration RMS [g] (root mean square)
Spp
Stroke (vibration amplitude) [mm] (peak to peak)
The indications on the display can be changed by pressing the "configura-
tion" button. The preset values are displayed.
Indicated values
Description
Active Output I/V
Active output I or V
F
Set measuring range of the frequency [Hz]
arms
Set measuring range of the acceleration RMS [g]
Spp
Set measuring range of the vibration amplitude [mm] (peak to
peak)
Configure the
controller
Indications on
the display

Maintenance and servicing
17
8 Maintenance and servicing
Observe the safety instructions in Ch. Safety, from page 5 on.
Maintenance of the VSI must be carried out as follows:
Interval
Action
Monthly
Check cables.
Every 6 month
Check proper condition of connecting cables and plugs.
At least every 4 years
Check proper condition of electrical systems and stationary
electrical equipment.
Maintenance
plan

Troubleshooting
18
9 Troubleshooting
Observe the safety instructions in Ch. Safety, from page 5 on.
Electrical faults may only be processed by a qualified electrician. Work on
the VSI may only be carried out by authorised persons.
In the case of unauthorised intervention in the VSI there is no longer any
warranty claim. Interventions of any kind are to be agreed upon with Net-
ter Vibration.
In the case of malfunctions of the VSI proceed as follows:
Malfunction
Possible causes
Corrective action
The measured frequency
changes continuously
between two or more
values which differ con-
siderably (more than
10%) from each other.
The measured vibration
is composed of two or
more harmonic vibra-
tions which contribute
nearly equally to the
overall vibration.
If only the lowest frequency of a
system with several excita-
tion/resonance frequencies is to
be measured, a mechanical
dampening (e. g. a rubber pad
placed below the sensor) can be
used in order to hide higher fre-
quencies during the measurement
(mechanical low pass filter).
The sensor is not firmly
fixed to the system to be
measured or detaches
repeatedly from the
measuring surface dur-
ing the measurement.
Fasten the sensor correctly. The
sensor must be firmly attached to
the measuring surface.
The measured stroke
differs distinctively from
a reference value which
has been ascertained
through a different
measuring method.
The vibration deviates
considerably from a si-
nusoidal wave.
The measurement of the vibration
amplitude will only be reliable if
the measured acceleration is si-
nusoidal.
The sensor is not
aligned parallel to the
vibration direction.
The longitudinal axis of the sensor
must be aligned parallel to the
vibration direction or radially in
case of circular vibrations.
The acceleration dis-
played is always zero,
although the sensor is
attached to a vibrating
system.
The sensor is aligned at
a 90-degree angle to the
vibration direction.
The longitudinal axis of the sensor
must be aligned parallel to the
vibration direction or radially in
case of circular vibrations.
The sensor is defective
or the measuring unit is
defective.
Send the measuring unit (control-
ler) including sensor and connect-
ing cable to Netter Vibration for
checking and repair.
Expertise and
regulations
Malfunctions
and causes

Spare parts and accessories
19
10 Spare parts and accessories
Please provide the following details when ordering spare parts:
required amount
description and position of spare part
type of VSI
A list of the parts used can be found in the spare part list of the VSI.
Spare parts of the VSI and of the electrical installation must be installed by
an authorised electrician. This specialist must be familiar with the protec-
tive measures.
Defective parts must be replaced by parts of the same type. If you need to
replace components of the VSI, then contact Netter Vibration.
All parts of the VSI must be properly disposed of according to
the material specifications. The valid disposal prices of the VSI
are available on request.
Ordering of
spare parts
Spare part list
Requirements
for exchange
Prices