Pepperl+Fuchs VIM6 Series User manual

VIM6* Vibration Sensors
Manual

With regard to the supply of products, the current issue of the following document is applicable:
The General Terms of Delivery for Products and Services of the Electrical ndustry, published
by the Central Association of the Electrical ndustry (Zentralverband Elektrotechnik und Elek-
troindustrie (ZVE ) e.V.) in its most recent version as well as the supplementary clause:
"Expanded reservation of proprietorship"
Worldwide
Pepperl+Fuchs Group
Lilienthalstr. 200
68307 Mannheim
Germany
Phone: [phone] - 0
E-mail: [email protected]
North American Headquarters
Pepperl+Fuchs nc.
1600 Enterprise Parkway
Twinsburg, Ohio 44087
USA
Phone: [phone]
E-mail: [email protected]
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P+F Building
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Singapore 139942
Phone: [phone]
E-mail: [email protected]rl-fuchs.com
https://www.pepperl-fuchs.com

V M6* Vibration Sensors
Contents
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1 Introduction................................................................................................................ 4
1.1 ontent of this Document............................................................................. 4
1.2 Target Group, Personnel ............................................................................... 4
1.3 Symbols Used ................................................................................................ 5
1.4 Intended Use .................................................................................................. 6
1.5 General Safety Instructions.......................................................................... 6
2 Product Description .................................................................................................. 7
2.1 Use and Application ...................................................................................... 7
2.2 Vibration Monitoring...................................................................................... 8
2.2.1 Vibration Velocity Operating Range .................................................................................... 8
2.2.2 Frequency Response.......................................................................................................... 9
2.3 Accessories.................................................................................................. 10
3 Installation................................................................................................................ 11
3.1 Instructions for Mechanical and Electrical Installation ........................... 11
3.2 Mounting....................................................................................................... 13
3.3 Electrical Installation................................................................................... 14
4 Troubleshooting....................................................................................................... 18
4.1 What to Do in ase of a Fault ..................................................................... 18
5 Repair and Servicing............................................................................................... 19

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V M6* Vibration Sensors
ntroduction
1 Introduction
1.1 ontent of this Document
This document contains information that you need in order to use your product throughout the
applicable stages of the product life cycle. These can include the following:
•Product identification
•Delivery, transport, and storage
•Mounting and installation
•Commissioning and operation
•Maintenance and repair
•Troubleshooting
•Dismounting
•Disposal
The documentation consists of the following parts:
•Present document
•nstruction manual
•Datasheet
Additionally, the following parts may belong to the documentation, if applicable:
•EU-type examination certificate
•EU declaration of conformity
•Attestation of conformity
•Certificates
•Control drawings
•Additional documents
1.2 Target Group, Personnel
Responsibility for planning, assembly, commissioning, operation, maintenance, and dismount-
ing lies with the plant operator.
Only appropriately trained and qualified personnel may carry out mounting, installation, com-
missioning, operation, maintenance, and dismounting of the product. The personnel must have
read and understood the instruction manual and the further documentation.
Prior to using the product make yourself familiar with it. Read the document carefully.
Note
This document does not substitute the instruction manual.
Note
For full information on the product, refer to the instruction manual and further documentation on
the nternet at www.pepperl-fuchs.com.

V M6* Vibration Sensors
ntroduction
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1.3 Symbols Used
This document contains symbols for the identification of warning messages and of informative
messages.
Warning Messages
You will find warning messages, whenever dangers may arise from your actions. t is mandatory
that you observe these warning messages for your personal safety and in order to avoid prop-
erty damage.
Depending on the risk level, the warning messages are displayed in descending order as fol-
lows:
Informative Symbols
Action
This symbol indicates a paragraph with instructions. You are prompted to perform an action or
a sequence of actions.
Danger!
This symbol indicates an imminent danger.
Non-observance will result in personal injury or death.
Warning!
This symbol indicates a possible fault or danger.
Non-observance may cause personal injury or serious property damage.
aution!
This symbol indicates a possible fault.
Non-observance could interrupt the device and any connected systems and plants, or result in
their complete failure.
Note
This symbol brings important information to your attention.

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V M6* Vibration Sensors
ntroduction
1.4 Intended Use
The vibration sensor is used exclusively for measuring mechanical vibrations on machines and
mechanical systems. Use is only permitted within the specifications stated in the datasheet.
Typical applications are monitoring fans, ventilators, electric motors, pumps, centrifuges, sepa-
rators, generators, turbines, and similar oscillating mechanical systems. Read through this
manual carefully. Familiarize yourself with the device before installing, mounting, or operating.
Some product versions are suitable for use in hazardous areas. The relevant national or inter-
national directives and the instruction manual for the product must be followed.
Always operate the device as described in these instructions to ensure that the device and con-
nected systems function correctly. The protection of operating personnel and the plant is guar-
anteed only if the device is operated in accordance with its intended use.
1.5 General safety instructions
Responsibility for planning, assembly, commissioning, operation, maintenance, and dismount-
ing lies with the plant operator.
nstallation and commissioning of all devices may be performed only by trained and qualified
personnel.
t is dangerous for the user to make changes and/or repairs. Additionally, doing so voids the
warranty and excludes the manufacturer from any liability. n the event of any serious errors,
stop using the device. Secure the device against unintended operation. To have the device
repaired, return it to your local Pepperl+Fuchs representative or your sales center.
Note
Disposal
Electronic waste is dangerous. When disposing of the equipment, observe the current statutory
requirements in the relevant country of use and local regulations.

V M6* Vibration Sensors
Product Description
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2 Product Description
2.1 Use and Application
Vibration sensors from the V M6* product family determine the vibration magnitude using the
root mean square (RMS) formation. This form of quadratic average determination or pre-filter-
ing allows precise statements to be made about trends relating to the status of the application.
Depending on the product versions, the vibration magnitude is determined either as the vibra-
tion acceleration (in g rms), as the vibration velocity (in mm/s), or as the vibration velocity and
temperature (in °C).
Some product versions are suitable for use in hazardous areas. The relevant national or inter-
national directives and the instruction manual for the product must be followed.
Vibration sensors from the V M6* product family always have two temperature readings: the
measuring head temperature T
M
and the ambient temperature T
A
.
•The measuring head temperature T
M
describes the maximum permissible temperature
range directly at the location where the sensor is mounted. The machine surface to be
monitored must therefore not exceed or fall below the specified measuring head tempera-
ture T
M
for the sensor.
•The ambient temperature T
A
describes the maximum permissible temperature range for
the ambient atmosphere in which the sensor is used.
The two temperatures are related as described below. The measuring head temperature T
M
is
always permitted to be a higher temperature than the corresponding ambient temperature T
a
in
the upper range. This means that the machine to be monitored is permitted to heat up to the
upper limit of T
M
and therefore contribute to the heating of the ambient atmosphere. However,
the resulting ambient temperature must not exceed the upper limit of T
A
.
Example
Temperature specifications:
•-35 °C ≤ T
M
≤ 125 °C
•-35 °C ≤ T
A
≤ 60 °C
The machine to be monitored must not exceed 125 °C at the location where the sensor is
mounted, while the ambient atmosphere in which the sensor is used must not exceed 60 °C.

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V M6* Vibration Sensors
Product Description
2.2 Vibration Monitoring
2.2.1 Vibration Velocity Operating Range
The operating range of the vibration velocity is not constant over the entire measuring range. t
always depends on the current frequency at which the vibration sensor is vibrating.
Essentially, the higher the current frequency, the lower the detectable vibration velocity. This
can lead to a significantly high frequency, which can then lead to the current operating range of
the sensor in this state being smaller than the specified measuring range.
The maximum detectable operating range can be derived from the maximum detectable accel-
eration. This is 16.5 g (161.8 m/s
2
) for the entire frequency range.
The maximum measurable vibration velocity results from the following physical correlation:
The following figure depicting the vibration monitoring shows the operating range, which is lim-
ited by the maximum measurable vibration velocity in mm/s depending on the frequency. The
area above the curve shows the operating range that cannot be measured when recording the
vibration velocity, because the frequency is too high. The sensor outputs the vibration velocity
value that can only just be detected.
Example for a version with a measuring range of 128 mm/s:
•Assumption: Application vibrates at 80 mm/s at 400 Hz
•Sensor output: 64 mm/s
This is the vibration velocity value that can only just be detected at this frequency.
Figure 2.1
1Frequency in Hz
2Vibration velocity in mm/s
3Operating range of vibration monitoring
The following applies to sinusoidal
vibrations:

V M6* Vibration Sensors
Product Description
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Reading Example
2.2.2 Frequency Response
The typical frequency response of vibration monitoring for two frequency ranges is depicted
below.
Frequency Response: 10 Hz to 1000 Hz
The cut-off frequencies are 10 Hz and 1000 Hz with -3 dB damping.
Figure 2.2
Frequency (Hz) Maximum Measurable Vibration Velocity (mm/s)
250 103
400 64
1000 25
Table 2.1
1Frequency in Hz
2Gain in dB

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V M6* Vibration Sensors
Product Description
Frequency Response: 1 Hz to 1000 Hz
The frequency response was recorded using two reference sensors.
The cut-off frequencies are 1 Hz and 1000 Hz with -3 dB damping.
Figure 2.3
2.3 Accessories
Available Accessories
1Frequency in Hz
2Gain in dB
Note
Various accessories are available for the V M6* vibration sensors. These accessories are
available online at www.pepperl-fuchs.com, on the product page for the relevant V M6*
vibration sensor.
Accessories Use
Cordset for plug versions Electrical connection for plug versions
EMC adapter For insulating the sensor from the mounting point to protect
against sources of EMC interference.
Mounting adapter Adapter with different thread sizes for specific mounting
requirements at the mounting point.
Rubber protective sleeve Flexible plastic cover for additional protection of the sensor
against chemical and mechanical influences.
Flexible metal conduit Flexible metal conduit for additional protection of the internal
cable against chemical and mechanical influences.

V M6* Vibration Sensors
nstallation
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3 Installation
3.1 Instructions for Mechanical and Electrical Installation
Always observe the following instructions to ensure safe operation of the vibration sensor:
Note
Further installation-relevant information on technical data, mechanical data, and available
connection lines for the relevant vibration sensor types can be found in the corresponding
datasheet.
Warning!
Work must be performed by trained and qualified personnel only.
Commissioning and operation of this electrical device must be performed by trained and quali-
fied personnel only. This means individuals who are qualified to commission (in accordance
with safety engineering), connect to ground, and label devices, systems, and circuits.
Warning!
Perform work only when the system is de-energized!
De-energize your device before performing work on the electrical connections. Short circuits,
voltage peaks, and similar events can lead to faults and undefined statuses. This presents a
significant risk of personal injury and property damage.
Warning!
Protect cables against interference and damage.
Protect the connection cable and any extension cables from electrical interference and
mechanical damage. Always observe the local regulations and instructions.
Warning!
Check electrical connections before switching on the plant!
Check all electrical connections before switching on the plant. ncorrect connections present a
significant risk of personal injury and property damage. ncorrect connections can lead to mal-
functions.
aution!
The housing must be grounded.
The housing of the vibration sensor must be grounded when mounting, either via the machine
body or via a separate protective conductor (PE).
aution!
Do not perform any electrical modifications!
t is not permitted to perform electrical modifications on the vibration sensor. f you open or
modify the device yourself, you are endangering yourself and others, voiding any warranty, and
absolving the manufacturer of any liability.

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V M6* Vibration Sensors
nstallation
aution!
Ensure that the data cable and power supply cable are physically separate!
To prevent interference, route the cordset for the vibration sensor so that it is a suitable distance
away from power supply cables. Shielded cables must be used to ensure reliable data transfer.
A perfect ground connection must be ensured. Always observe the local regulations and
instructions.

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nstallation
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3.2 Mounting
Prerequisites
Mounting the vibration sensor on the mounting surface:
•The mounting surface must be clean and flat, i.e., free of paint, rust, etc.
•The measuring head surface of the vibration sensor must lie flat on the mounting surface.
•The vibration sensor is fitted with an M8 screw thread as standard. nsert the screw thread
into a threaded hole in the mounting surface. f the thread in the hole is different, thread
adapters are available as an accessory.
Mounting the Vibration Sensor
For safe and error-free operation, observe the following requirements during mounting:
•Mount the vibration sensor on the mounting surface correctly to obtain accurate data.
•Avoid mounting the vibration sensor on auxiliary structures. f it is absolutely necessary to
use auxiliary structures, make sure these are designed to be as rigid as possible.
•Earth and ground loops are among the most common problems when using measuring
setups with sensitive sensor technology. These loops are caused by unwanted differ-
ences in potential in the circuit between the sensor and the control interface. As a
countermeasure, we recommend our standard grounding concept or, depending on the
application, our alternative grounding concept
•Make sure that the ground connection is electrically safe.
1. Screw the vibration sensor into the threaded hole in the mounting surface using a hexagon
wrench (SW 24) at a tightening torque of 8 Nm.
2. For plug versions: Connect the connection cable and note that the tightening torque of the
connector's M12 union nut must not exceed 0.4 Nm.

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V M6* Vibration Sensors
nstallation
3.3 Electrical Installation
Note
onnection Diagram
Earth and ground loops are among the most common problems when using measuring setups
with sensitive sensor technology. These loops are caused by unwanted differences in potential
in the circuit between the sensor and the control interface.
Three different grounding concepts are described below. The appropriate concept should be
selected for the application. Note that different cable types and other accessories may be
required depending on the grounding concept.
Note
Various accessories are available for the V M6* vibration sensors. These are available online at
www.pepperl-fuchs.com, on the product page for the relevant V M6* vibration sensor.

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nstallation
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Grounding oncept 1 (Recommended)
Only applicable for:
•Versions with an integrated cable outlet
•Plug versions with a P+F connection cable accessory
The following diagram applies to each version with an integrated cable outlet or to each plug
version that is used in combination with a suitable P+F connection cable accessory. This
grounding concept is also recommended if no sources for EMC pollution, such as frequency
inverters, are used on the machine side. n the standard grounding concept, the sensor cable
shield is not connected to the sensor housing (represented by the red dashed circuit in the
Fig.). The sensor housing has the same potential as the machine earth.
Figure 3.1
n principle, there is a risk that very long cable lengths with a long distance between the
machine earth (1) and the earth (6) of the control interface could lead to an earth loop. This
would lead to continuous equipotential bonding between the machine and the control interface.
To prevent these earth loops, the housing potential and the cable shield are not connected in
this grounding concept. Nevertheless, coupled interference can discharge either via the
machine earth (1) or via the earth (6) of the control interface.
Situation/Requirements of
the Application Effects of the Grounding oncept
No EMC faults expected from
the machine side,
e.g., from the frequency
inverter
•The machine should be connected to the sensor housing, or
there is no effect on the quality of the measurements provided by
the sensor.
•EMC faults that still directly affect the sensor head can discharge
via the machine earth.
Prevention of earth loops nec-
essary,
e.g., when using a long cable
approx. 500 m in length.
No conductive connection between the sensor housing and
the cable shield required:
This means that there is no connection between the machine
earth (point 1 in Fig.) and the earth at the control interface (->
point 6 in Fig.).
Coupled interference must be
deflected
•Deflected via machine earth (-> point 1 in Fig.)
or
•Deflected via earth at the control interface (-> point 6 in Fig.)
Table 3.1
1Machine earth
2Control interface (measuring instrument, PLC, etc.)
34 mA ... 20 mA power signal
410 V DC ... 30 V DC
5Cable shield
6Ground potential for the control interface
7Optional flexible metal conduit (only available for version with an integrated cable)
12
4
0 V
500 max.Ω
310-30V
5
6
7

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V M6* Vibration Sensors
nstallation
This separated design is available in all versions with an integrated cable. The sensor housing
potential and the cable shield can also be separated for plug versions that are used with a suit-
able P+F connection cable accessory.
Grounding oncept 2 (Special ase)
Only applicable for:
•Plug versions with connection cable accessories from third-party suppliers.
•Assumption: The sensor housing and the cable shield are connected.
The following diagram only applies to plug versions that are used with a commonly available
cordset to connect the sensor housing potential and the cable shield. The EMC adapter (red)
must also be used as an accessory. This grounding concept is recommended when sources of
EMC pollution, such as frequency inverters, are present on the machine side.
Figure 3.2
n principle, there is a risk that very long cable lengths with a long distance between the
machine earth (1) and the earth (6) of the control interface could lead to an earth loop. This
would lead to continuous equipotential bonding between the machine and the control interface.
To prevent these earth loops, the housing potential and the cable shield are not connected in
this grounding concept.
This separation is implemented using an insulating EMC adapter (red). The sensor is therefore
protected from couplings from the machine side. Nevertheless, further coupled interference
can discharge away or discharge via the earth of the control interface (6).
Situation/Requirements of
the Application Effects of the Grounding oncept
Severe EMC interference is
expected from the machine
side,
e.g., from the frequency
inverter
The machine and the sensor housing should not be con-
nected. nsulation via an EMC adapter protects the sensor's
measurement data acquisition from interference.
Risk/prevention of earth loops
necessary,
e.g., when using a long cable
approx. 500 m in length.
The sensor housing and the mounting point on the machine
are not connected:
This means that there is no continuous connection between
the machine earth (-> point 1 in Fig.) and the earth at the con-
trol interface (-> point 6 in Fig.).
Coupled interference must be
deflected
Deflected via earth at the control interface (-> point 6 in Fig.)
Table 3.2
1Machine earth
2Control interface (measuring instrument, PLC, etc.)
34 mA ... 20 mA power signal
410 V DC ... 30 V DC
5Cable shield
6Ground potential for the control interface
7EMC adapter
500 max. 0 V
10-30V

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nstallation
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Grounding oncept 3 (Special ase)
Only applicable for:
•Plug versions with connection cable accessories from third-party suppliers.
•Assumption: The sensor housing and the cable shield are connected.
The following diagram only applies to plug versions that are used with a commonly available
cordset to connect the sensor housing potential and the cable shield.
Figure 3.3
n principle, there is a risk that very long cable lengths with a long distance between the
machine earth (1) and the earth (6) of the control interface could lead to an earth loop. This
would lead to continuous equipotential bonding between the machine and the control interface.
To prevent these earth loops, this grounding concept is designed so that the grounding on the
side of the control interface is not connected. Therefore, there is no continuous connection
between the machine earth (1) and the earth (6) of the control interface. Coupled interference
can only be discharged via the machine earth (1).
Connect the vibration sensor to a higher-level electronics/control environment using one of the
three grounding concepts discussed above.
Situation/Requirements of
the Application Effects of the Grounding oncept
No EMC faults expected from
the machine side,
e.g., from the frequency
inverter
•The machine should be connected to the sensor housing, or
there is no effect on the quality of the measurements provided by
the sensor.
•EMC faults that still directly affect the sensor head can discharge
via the machine earth.
Risk/prevention of earth loops
necessary,
e.g., when using a long cable
approx. 500 m in length.
The earth on the control interface (-> point 6 in Fig.) is not inte-
grated.
On the control interface, there is insulation between the cable
shield and the earth.
Coupled interference must be
deflected
Machine earth (-> point 1 in Fig.)
Table 3.3
1Machine earth
2Control interface (measuring instrument, PLC, etc.)
34 mA ... 20 mA power signal
410 V DC ... 30 V DC
5Cable shield
6Ground potential for the control interface
7Optional flexible metal conduit (only available for version with an integrated cable)
12
4
0 V
500 max.Ω
310-30V
5
6
7

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V M6* Vibration Sensors
Troubleshooting
4 Troubleshooting
4.1 What to Do in ase of a Fault
n case of a fault, use the following checklist to determine whether a fault with the vibration
monitoring can be remedied.
f none of the information provided in the checklist solves the problem, you can contact Pep-
perl+Fuchs via your sales office with any queries. Have details of the model number and firm-
ware version of the sensor ready if possible.
hecklist
Error ause Remedy
No measured
value
No supply voltage Check the voltage supply and/or supply lines.
nterruption in the connec-
tion cable
Replace the connection cable.
Faulty fuse Replace the fuse in the voltage supply area of
the sensor.
Reversed polarity in the
connection
Check the voltage supply and ensure the polarity
is correct.
ncorrect mea-
sured value
Vibration sensor not
mounted correctly
Check that the sensor is mounted correctly.
Ensure that the sensor thread is tightened with a
tightening torque of 8 Nm.
Vibration sensor mounted
in the wrong position
The vibration behavior can vary depending on
the measuring point / mounting point. Therefore,
mount the sensor as precisely as possible at the
point where you want to estimate/monitor the
corresponding vibration behavior.
EMC problems Earth loops / ground loops Check the explanations provided in the chapter
"Electrical Connection" for the relevant sensor
grounding concept (See chapter 3.3).
Table 4.1

V M6* Vibration Sensors
Repair and Servicing
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5 Repair and Servicing
The device must not be repaired, changed, or manipulated. n case of failure, always replace
the device with an original device.

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