Brüel & Kjaer Vibro VIBROCONTROL 850 User manual

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VIBROCONTROL 850
Instruction
Single channel vibration monitor

Copyright © 2017 Brüel & Kjaer Vibro GmbH
All rights to this technical documentation remain reserved.
Any corporeal or incorporeal reproduction or dissemination of this technical documentation or making this
document available to the public without prior written approval from Brüel & Kjaer Vibro GmbH shall be
prohibited. This also applies to parts of this technical documentation.
Brüel & Kjaer Vibro GmbH
Leydheckerstrasse 10
64293 Darmstadt
Germany
Phone: [phone]
Fax: [phone]
E-Mail: inf[email protected]om
Hotline:
Phone: [phone]
E-Mail: [e-mail]

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Content
1Applications 4
2Hints for safety operations of VIBROCONTROL 850 4
3Functionality 5
3.1 DIP-switches 6
3.2 How to get access to the set-up DIP-switches 6
3.3 Measuring Parameter (mm/s) 7
3.4 Measuring Range Full Scale 7
3.5 Frequency Bandwidth 7
3.6 Alert Alarm Trigger Level 7
3.7 Alert Alarm Delay Time 8
3.9 Danger Alarm Trigger Level 9
3.10 Danger Alarm Delay Time 9
3.11 Vibration Level During Self-Test 10
3.13 System Failure 11
3.14 Hang Time 11
3.15 Latch Function 11
3.16 Overload 11
3.17 Over range 12
3.18 DC Analogue Output 12
3.19 Alarm Output (relays) 12
3.20 Light Emitting Diodes (LEDs) 13
3.21 Self-Test Function 13
3.22 Sensor Test 13
3.23 Measuring Direction 14
3.24 Reset of Alarms 14
3.25 Inhibit Alarms 14
3.26 Grounding the housing of the device 14
4Mounting of the VIBROCONTROL 850 15
5Cable Connections 16
5.1 Standard Cable Configuration 16
6Technical data 17
7Maintenance 19
8Disposal 19

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WARNING!
This symbol warns of dangerous situations which can result from misuse of the product.
NOTE!
This symbol provides general and useful information for using the product.
1 Applications
The VIBROCONTROL 850 is a maintenance free device and can be used to monitor vibration
parameters in applications with machines like pumps, blowers, ventilators, decanters, separators,
centrifuges, mills and milling equipment.
In case the VIBROCONTROL 850 needs to have removed the lid for change of settings, make
sure that the O-ring is in place and not damaged.
The VIBROCONTROL 850 continuously keeps track of the vibration level of a machine at the point
where it is fixed to that machine.
The vibration parameters are given in true RMS of the vibration signal in mm/s.
The VIBROCONTROL 850 has two alarms, respectively called Alert and Danger, which can be used to
give alarm(s) if the machine vibration level exceeds certain pre-set trigger level(s).
2 Hints for safety operations of VIBROCONTROL 850
General:
Please carefully read the operating instructions prior to set-up of the device. Make sure that your
VIBROCONTROL 850 is suitable for your application without any restrictions.
Improper use:
Any improper or non-intended use may lead to malfunctions of the VIBROCONTROL 850 or to
unwanted effects in your application. If the VIBROCONTROL 850 is used in a way not described in
the relevant user manuals, function and protection may be impaired and serious personal damage,
death or serious, irreversible injuries may result.
EU-directives:
All versions of the VIBROCONTROL 850 conform to the relevant regulations and EC directives.
Installation and operation:
Installation, electrical connection, set-up, operation and maintenance of your VIBROCONTROL
850(s) must only be carried out by qualified/trained personnel (electrician) authorized by the machine
operator in accordance with local- and national regulations for the installation of electrical equipment.
Changing the setup parameters:
Before applying a new set of setup parameters to the VIBROCONTROL 850, please make sure that
doing so cannot cause any damage to persons and/or machinery.

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Maintenance:
If used correctly no maintenance and repair measures are necessary. Only the manufacturer is
allowed to repair the unit. At the end-of-life-cycle, please dispose of the unit in an environmentally
friendly way in accordance with the applicable national regulations.
3 Functionality
The VIBROCONTROL 850 is a vibration monitor device with an internal accelerometer, as well as
conditioning-, alarm-, test-, and output circuitries, all placed in a stainless steel enclosure. The internal
accelerometer sensor has a maximum bandwidth of 10 – 1000 Hz.
The VIBROCONTROL 850 is designed to monitor mechanical vibrations on machines according to
DIN/ISO-10816. In compliance with this standard the machine vibration must be monitored in mm/s
and within a frequency bandwidth of 10 – 1000 Hz.
In the VIBROCONTROL 850 the momentary vibration level is continuously compared with two alarm
trigger levels respectively called Alert and Danger. If an alarm trigger level has been exceeded, the
corresponding alarm relay (respectively Danger Relay and/or Alert Relay) will become activated and
thereby inform the user, e.g. via a connected rotor light, beeper, controller or by directly shutting down
the machine.
The VIBROCONTROL 850 provides a 4-20 mA DC output signal, which at any time expresses the
vibration level relative to the chosen measuring range.
Using DIP-switches that can be accessed – after the lid of the enclosure has been removed – the
customer has the possibility to set a number of parameters.
See paragraph 3.2 how to remove the lid.

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3.1 DIP-switches
There are 8 DIP-switches that are combined in three groups:
•Measurement range (DIP-switches #1 and #2):
There are four possible measurement ranges with different full scale values that can be used
when the VIBROCONTROL 850 is working in “Standard Mode”.
The actual four (4) possible full scale values are set by the factory to default values.
•Mode (DIP-switches #3, #4 and #5):
Under “Mode” the user has the possibility to setup alert and danger alarm trigger level, alert
and danger delay time and the self-test level in standard mode. DIP-switch #6 must be in OFF
position.
Switch position Parameter setting Value range
#3 #4 #5
(0)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
Off
Off
Off
Off
On
On
On
On
Off
Off
On
On
Off
Off
On
On
Off
On
Off
On
Off
On
Off
On
Parameter setting mode inactive
Danger alarm delay time
Danger Alarm trigger level
Not applicable
Alert Alarm trigger level
Analogue output level during Self-Test
Alert Alarm delay time
Not applicable
None
1-100 s
1-100 % of FS
None
1-100 % of FS
1-100 % of FS
1-100 s
None
•Miscellaneous (DIP-switches #6, #7 and #8):
○- DIP-switch #6 not used
○- DIP-switch #7 switches the Self-Test function On or Off (see section 3.20)
○- DIP-switch #8 connects the enclosure to GND (see section 3.25).
3.2 How to get access to the set-up DIP-switches
If the need arises, the customer can change certain setup parameters by means of eight DIP-switches
and two up/down pushbuttons.
In order to have access to the DIP-switches and pushbuttons the customer will have to carry out the
following procedure:
1) Remove the lid, using a coin or a large screwdriver
2) Remove the lid and the sealing O-Ring
Do NOT commence the removal of the lid before the power has been switched off.
In case the VIBROCONTROL 850 needs to have removed the lid for change of settings, make
sure that the O-ring is in place and not damaged.

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3.3 Measuring Parameter (mm/s)
The VIBROCONTROL 850 will be delivered with velocity in mm/s as the default parameter according
to ISO-10816, which is the most common standard related to machine vibration.
3.4 Measuring Range Full Scale
In manual mode the full scale of the measuring range is selectable by the customer using two DIP-
switches (1 & 2) marked Meas. Range Full Scale.
Whenever the VIBROCONTROL 850 is setup to measure velocity in mm/s, the settings of DIP-
switches 1 & 2 will have the following meaning by default 20 mm/s.
#1 #2 Full Scale
(FS) Range Range in mm/s
(0)
(1)
(2)
(3)
Off
On
Off
On
Off
Off
On
On
FS 1
FS 2
FS 3
FS 4
10
20
50
100
3.5 Frequency Bandwidth
The VIBROCONTROL 850 will be delivered with a frequency bandwidth of 10-1,000 Hz.
3.6 Alert Alarm Trigger Level
The Alert Alarm Trigger Level is the vibration threshold level that must be exceeded for at least the
Alert alarm delay time for the Alert alarm to become activated.
By default the Alert alarm trigger level is set to be 35 % of full scale.
Alternatively the customer can set the Alert alarm trigger level to his/her likings by using the following
procedure:
•Remove the lid that covers the VIBROCONTROL 850.
•Connect a digital multi meter in DC mA mode with a full-scale deflection of at least 20 mA to
the wires “GND” (-) and “4-20 mA Output” (+).
•Set DIP-switches 3, 4 & 5 in position (On – Off – Off)
•If e.g. the Alert alarm trigger level is 50 % the multi meter will show an analogue output of
12.0 mA.
•The analogue output can be changed to any value between 1 % and 100 % of selected full
scale by pushing the buttons up and down at the left and right bottom of the round plate. Each
pushing of the respective button will decrease or increase the Alert alarm trigger level by 0.5 %
of full scale. Stop pushing the buttons when the required Alert alarm trigger level has been
reached. When one of the buttons is held down it will continuously change the Alert alarm
trigger level.
•When finished put the DIP-switches 3, 4 & 5 into the position Off – Off – Off, which will bring
the VIBROCONTROL 850 back into normal monitoring mode with the new settings in place.

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Failing to put the DIP-switches 3, 4 & 5 in Off – Off – Off position after the setting is finished,
will have the consequence that the analogue output will continuously be showing the Alert
alarm trigger level and the vibration guard will therefore NO LONGER react on any alarm
trigger levels, i.e. neither from Alert nor Danger alarms.
3.7 Alert Alarm Delay Time
The Alert Alarm Delay Time is the minimum time the vibration level must exceed the pre-set Alert
alarm trigger level before the alarm gets activated. This is to avoid false alarms in situations where an
allowed short-lived shock (transient) is imposed on the machine. This could be when e.g. a new piece
of raw material is placed in or taken out of the machine.
The Alert alarm delay time is 3 seconds. The customer can set the Alert alarm delay time to the
following procedure:
•Remove the lid that covers the VIBROCONTROL 850.
•Connect a digital multi meter in DC mA mode with a full-scale deflection of at least 20 mA to
the wires “GND” (-) and “4-20 mA Output” (+).
•Set DIP-switches 3, 4 & 5 in position (On – On – Off).
•If e.g. the Alert alarm delay time is 10 seconds the multi meter will show an analogue output of
5.6 mA.
•The Alert alarm delay time can be changed to any value between 0 second and 100 seconds
by pushing the buttons up and down at the left and right bottom of the round plate. 0 second is
4 mA and 100 seconds is 20 mA. Each pushing of the button will decrease or increase the
Alert alarm delay time by half a second. When one of the buttons is held down it will
continuously change the Alert Alarm Delay Time. Stop pushing the buttons when the required
Alert Alarm Delay Time has been reached.
•When finished put the DIP-switches 3, 4 & 5 into the position Off – Off – Off, which will bring
the VIBROCONTROL 850 back into normal monitoring mode with the new settings in place.
Failing to put the DIP-switches 3, 4 & 5 in Off – Off – Off position after the setting is finished,
will have the consequence that the analogue output will continuously be showing the Alert
alarm delay time and the vibration guard will therefore NO LONGER react on any alarm trigger
levels, i.e. neither from Alert nor Danger alarms.

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3.9 Danger Alarm Trigger Level
The Danger Alarm Trigger Level is the vibration level at the analogue output that must be exceeded for
at least the Danger alarm delay time for the Danger alarm to become activated.
By default the Danger alarm trigger level is set to be 55 % of full scale in Band 1.
The customer can set the Danger alarm trigger level by using the following procedure:
•Remove the lid that covers the VIBROCONTROL 850.
•Connect a digital multi meter in DC mA mode with a full-scale deflection of at least 20 mA to
the wires “GND” (-) and “4-20 mA Output” (+).
•Set DIP-switches 3, 4 & 5 in position (Off – On – Off)
•The analogue output can be changed to any value between 1 % and 100 % of full scale by
pushing the buttons “On” and “Off” at the left and right bottom of the round plate. Each pushing
of the button will decrease or increase the limit by 0.5 % of full scale. Stop pushing the buttons
when the required Danger alarm trigger level has been reached. When one of the buttons is
held down it will continuously change the Danger alarm trigger level.
•When finished put the DIP-switches 3, 4 & 5 into the position Off – Off – Off, which will bring
the VIBROCONTROL 850 back into normal monitoring mode with the new settings in place.
Failing to put the DIP-switches 3, 4 & 5 in Off – Off – Off position after the setting is finished,
will have the consequence that the analogue output will continuously be showing the Alert
alarm delay time and the vibration guard will therefore NO LONGER react on any alarm trigger
levels, i.e. neither from Alert nor Danger alarms.
3.10 Danger Alarm Delay Time
The Danger Alarm Delay Time is the minimum time the vibration level must exceed the pre-set Danger
alarm trigger level before the alarm gets activated. This is to avoid false alarms in situations where an
allowed short-lived shock (transient) is imposed on the machine. This could be when e.g. a new piece
of raw material is placed in or taken out of the machine.
The Danger alarm delay time is 1 second.
The customer can set the Danger alarm delay time by the following procedure:
•Remove the lid that covers the VIBROCONTROL 850.
•Connect a digital multi meter in DC mA mode with a full-scale deflection of at least 20 mA to
the wires “GND” (-) and “4-20 mA Output” (+).
•Set DIP-switches 3, 4 & 5 in position (Off – Off – On).
•The analogue output can be changed to any value between 0 seconds and 100 seconds by
pushing the buttons “On” and “Off” at the left and right bottom of the round plate. 0 seconds is
4 mA and 100 seconds is 20 mA. Each pushing of the button will decrease or increase the
Danger alarm delay time by half a second. When one of the buttons is hold down it will
continuously change the Danger alarm delay time. Stop pushing the buttons when the required
Danger alarm delay time has been reached.
•When finished put the DIP-switches 3, 4 & 5 into the position Off – Off – Off, which will bring
the VIBROCONTROL 850 back into normal monitoring mode with the new settings in place.

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Failing to put the DIP-switches 3, 4 & 5 in Off – Off – Off position after the setting is finished,
will have the consequence that the analogue output will continuously be showing the Alert
alarm delay time and the vibration guard will therefore NO LONGER react on any alarm trigger
levels, i.e. neither from Alert nor Danger alarms.
3.11 Vibration Level During Self-Test
The vibration level, as well as the DC-current at the analogue output is by default pre-set to 102 % (of
full scale) when running a Self-Test, i.e. 20 mA. The analogue output level during Self-Test value can
be set to be more than 100 % (20 mA) to ensure that there will be a minimum of at least 20 mA at the
analogue output whenever the Self-Test is activated.
In order to test the integrity of the VIBROCONTROL 850, it's recommended that the Self-Test is carried
out either manually or automatically (by e.g. a PLC-controller) on a regular basis.
The Self-Test can be activated on the wire input or by DIP-switch.
Failing to put the DIP-switches 3, 4 & 5 in Off – Off – Off position after the setting is finished,
will have the consequence that the analogue output will continuously be showing the Alert
alarm delay time and the vibration guard will therefore NO LONGER react on any alarm trigger
levels, i.e. neither from Alert nor Danger alarms.
Alternatively the customer can set the analogue output level during Self-Test to his/her likings by using
the following procedure:
•Remove the lid that covers the VIBROCONTROL 850.
•Connect a digital multi meter in DC mA mode with a full-scale deflection of at least 20 mA to
the wires “GND” (-) and “4-20 mA Output” (+).
•Set DIP-switches 3, 4 & 5 in position (On – Off – On).
•If e.g. the Self-Test level is 100 % the multi meter will show an analogue output of 20.0 mA.
•The analogue output can be changed to any value between 0 % and 110 % of full scale by
pushing the buttons “Down” and “Up” at the left and right bottom of the round plate. 0 % is 4
mA, 100 % is 20 mA. The maximum is 110 % or 21.6 mA. Each pushing of the button will
decrease or increase the analogue output level during self-test by 1 %. When one of the
buttons is held down it will continuously change the analogue output level for the Self-Test.
Stop pushing the buttons when the required Self-Test output level has been reached.
•When finished put the DIP-switches 3, 4 & 5 into the position Off – Off – Off, which will bring
the VIBROCONTROL 850 back into normal monitoring mode with the new settings in place.
Failing to put the DIP-switches 3, 4 & 5 in Off – Off – Off position after the setting is finished,
will have the consequence that the analogue output will continuously be showing the Alert
alarm delay time and the vibration guard will therefore NO LONGER react on any alarm trigger
levels, i.e. neither from Alert nor Danger alarms.