Schenck Vibrocontrol 110 C01 User manual

VC 1100 CONTENTS
VC1100E/contents Version 2 →
© Schenck VIBRO GmbH, D-64273 Darmstadt, November 97 C01 / C02 - C11 / C12 1
Contents
VIBROCONTROL 1100
C01 / C02 / C11 / C12
1 Overview
2 Technical Data
3 Connectors and Interfaces
4 Built-in Operating Panel and Display
Error messages
5 List of Setup Parameters
6 Installation and Commissioning

CONTENTS VC 1100
Version 2 →contents/VC1100E
2C01 / C02 - C11 / C12 © Schenck VIBRO GmbH, D-64273 Darmstadt, November 97
Instrument types - Overview
Instrument Type Supply Voltage Bearing Condition
VC 1100 C01 230 V AC
115 V AC YES
VC 1100 C02 24 V DC YES
VC 1100 C11 230 V AC
115 V AC NO
VC 1100 C12 24 V DC NO
The instrument types C01, C02, C11 and C12 listed in the table above are described in
the VIBROCONTROL 1100 documentation.
Apart from the bearing condition, which is not applicable to the instrument types C11 and
C12, the descriptions for all instruments are the same.

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1 Overview
VIBROCONTROL 1100 is a 2 channel microprocessor controlled
machine condition monitor. Vibration velocity transducers or vibra-
tion acceleration transducers (accelerometers) are used to sense
the vibrations from a machine.
VIBROCONTROL 1100 is a compact machine monitor. All com-
ponents, like power supply, connectors, signal conditioners, micro-
processor and operator panel are integrated to one splash- proofed
housing.
Figure 1-1: Top view of a VIBROCONTROL 1100 with cover removed
VIBROCONTROL 1100 is complete; there are no options. Three
alarm relays, one OK-relay, two analog outputs, two buffered out-
puts, remote I/O interface, and signal conditioners are built-in.
There are no jumpers or potentiometers. All functions are com-
pletely microprocessor controlled and are configured using the
built-in operator panel or via the remote interface with a computer
or process controller.
The wiring is done through removable terminal strip connectors.
Vibration analyzers or data collectors can be connected to the
buffered outputs without interrupting the monitoring functions.

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Measured Values
Displayed Parameters
The measured values can be displayed in metric or English units:
Measured Parameter Abbreviation Unit
Vibration Displacement smm mils
Velocity vmm/s ips
Vibration Acceleration a g m/s2
If accelerometers are used, the Bearing Condition of rolling ele-
ment bearings can be measured and monitored.
The unit for Bearing Condition is BCU.
Bearing Condition - - - BCU
BCU Scaling Factor
Due to the BCU scaling factor, the BCU measuring result can be
multiplied with a factor. This factor is determined with parameter
J19 for channel A and J20 for channel B in the range between 0.1
and 10. Factor 1 displays the measuring result not scaled.
The BCU scaling factor makes it possible to set the measuring
result to a defined inital value in order to compare several
measuring points. The BCU scaling factor is to be employed
preferrably with new bearings.
Note:
The selected scaling factor must be considered when setting the
BCU limit value. If for instance the measuring result is divided by
two due to the scaling factor, also the limit value must be divided
by two.

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Example how to use the BCU scaling factor
In case of BCU measurements, the measuring result depends on
various factors, e.g. on the place of the pickup installation, on the
type of connection (e.g. tightening torque of the pickup) etc. The
consequence may be different measuring results with identical
machines and the same bearing condition units.
To enable a clear comparison of the single measuring points
(change of the bearing condition over a longer measuring period),
by means of the BCU scaling factor (parameters J19, J20) the
measuring results can be set to the same initial value (desired
value at the beginning of the measurement) for each measuring
point.
Carry out scaling
Input the scaling factor 1 for the respective measuring points.
Acquire the current measuring result.
From the desired BCU initial value and the current measuring
result of the respective measuring point, the BCU scaling factor
J19 or J20 is calculated with the following formula:
After the parameter input of all scaling factors, the re-spective
measuring point must display the desired BCU initial value.
Jdesired initial value
current measuring result
19 =

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BCU averaging
The BCU value may vary depending on the operating conditions of
a machine, for example due to varying loading conditions.
A defective anti-friction element which regulary changes its
position in such a way that the damaged part comes into contact
with the bearing running surface only after several revolutions, will
also cause varying BCU values.
Variations of that kind do not allow the conclusion that the bearing
is damaged.
The measured value can be averaged by means of a filter with
settable time constant (averaging time 10 ... 3600 secs.) in order
that these "variations" (which do not represent the normal
condition of the machine) don't cause an alarm message.
The bigger the selected averaging time
− the more stable the measured value (particularly important for
trend considerations)
− the more delayed the response behaviour of the limit value
monitoring.
The averaging be switched on and off separately for channel A
and channel B (parameters J15 ... J18).

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Measuring Ranges
The measuring ranges are microprocessor controlled and can be
selected continuously within the limits defined in the following
table:
Transducer : Vibration acceleration pick-up
Signal detection : Root mean sqare value
Measured Parameter Measuring Range Unit
Min Max
Vibration
Acceleration 0 ... 4.00 0 ... 0.40 0 ... 800 0 ... 80.0 m/s2
g
Vibration Velocity 0 ... 5.00
0 ... 0.20 0 ... 999 0 ... 40.0 mm/s ips
Transducer : Vibration Velocity pick-up
Signal detection : Root mean sqare value
Measured Parameter Measuring Range Unit
Min Max
Vibration Velocity 0 ... 5.00
0 ... 0.20 0 ... 150 0 ... 6.00 mm/s ips
Vibration
Displacement 0 ... 50.0 0 ... 2.00 0 ... 333 0 ... 13.3 µm
mils
Multiply values by 1.41 for peak-values and by 2.82 for peak-to-
peak values. The largest acceptable number is 999.
The measuring ranges for BCU-Monitoring are independent of the
measuring ranges for vibration monitoring.
Measured Parameter Measuring Range Unit
Min Max
Bearing Condition 0 ... 1.00 0 ... 140 BCU

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Filters
Machine vibrations are sensed by the vibration velocity trans-
ducers or accelerometers. Which pickup to use depends on the
application. The following table lists the filters that may be used
with the different measured parameters and pickup types:
Measured Parameter Transducer Filter
va
Vibration displacement x10 Hz ... 1000 Hz
Vibration Velocity x x 1 Hz ... 1000 Hz
x x 3 Hz ... 1000 Hz
x x 10 Hz ... 1000 Hz
x10 Hz ... 10 kHz
Vibration Acceleration x3 Hz ... 1000 Hz
x10 Hz ... 1000 Hz
x3 Hz ... 10 kHz
10 Hz ... 10 kHz
Bearing Condition x15 Hz ... 50 kHz
Transducer : v = Vibration Velocity Transducer
a = Accelerometer
* ) Fulfills the requirements of International Standard ISO 2372
Signal Conditioning and Signal Detection Type
The built-in signal conditioners are microprocessor controlled.
Gain factors, filters, and the integrator are set automatically. The
settings are determined by the microprocessor from the
configuration.

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Linearization
The characteristic of vibration velocity transducers is not linear in
the lower frequency range, i.e. with frequencies around 10 Hz.
VIBROCONTROL 1100 corrects this nonlinearity with a built-in
linearization circuit (Standard fo= 8 Hz / the special design fo=
15 Hz is identifield by an adhesive label inside the instruments).
The result is a linear frequency response characteristic for the total
measuring system down to 1 Hz.
The linearization circuit can be activated or deactivated by means
of parameter input (IO6).
Settling Time and Cycle Times
Electronic components like amplifiers, filters, etc. need a certain
amount of time to provide the correct output signal after the input
signal has been switched or changed.
This time is called settling time. Components used to measure low
frequencies have longer settling times than components used to
measure higher frequencies.
VIBROCONTROL 1100
can be configured as a single channel monitor or a 2 channel
monitor.
Single Channel Monitor (Vibration and Bearing Condition)
Operating as a single channel monitor, settling times are not
required, since the vibration signal is not switched from channel A
to channel B. The configuration, filter characteristic and gain, etc.
of the Vibration Signal Conditioner and the Bearing Condition
Detector do not need to be changed; therefore the vibration signal
is measured continuously.
Cycle Time: Built-in Display 0.5 s
Alarm level comparison 0.25 s
2 Channel Monitor (Vibration)
The vibration signals of channel A and B are switched alternately
(multiplexed) to the Vibration Signal Conditioner.
For each switch between channel A and B, the Vibration Signal
Conditioner is automatically re-configured and settling times are
required.
The total time for one measurement consists of the settling time
and the measurement time. The measurement time is always 3
seconds.
Outside the measuring times, the current display values of the
other channel are frozen, the current measured value, however, is
monitored in intervals of 0.25 seconds.

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The following table shows the settling times and the cycle times
(sum of settling and measuring time) for different functions and
setups of the Vibration Signal Conditioner. Different setups can be
used for channel A and B. The total cycle time is the sum of the
cycle times for channel A and B.
Activated Function Settling Time Cycle Time
High Pass Filter: 1 Hz 1.75 s 4.75 s
High Pass Filter: 3 Hz 1.00 s 4.00 s
High Pass Filter.: 10 Hz ISO 1.25 s 4.25 s
High Pass Filter: Special 1.75 s 4.25 s
Integrator 6.00 s 9.00 s
Linearization Circuit: 5.75 s 8.75 s
If more than one function has been selected, the function with the
longest settling time determines the total settling time.
2 Channel Monitor (Vibration and Bearing Condition)
Since VIBROCONTROL 1100 is equipped with a Bearing Condit-
ion Detector, the measurement of Bearing Condition is indepen-
dent of the vibration measurement.
The settling time is 2.75 s and the measuring time is 1.25 s.

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Monitoring
Each measuring channel has three limit values. Two limit values
for monitoring the vibration level, (lim_1 and lim_2), and one limit
value for Bearing Condition (lim_b). Each limit value can be set
individually.
Each limit value can be set to any value between 10 % and 100 %
of the measuring range. Larger or smaller limit values are not
accepted and will generate an error message
For each limit value an alarm delay time between 1 and 99
seconds can be selected. Limit value exceedance is only
acknowledged if the monitored signal remains above the limit
value for a period of time longer than the selected delay time.
When acknowledged, the event in entered into the 'Log Book', and
if it is configured to do so, the appropriate relay trips
In the 2 channel mode the alarm delay time is related to the
measurement cycle of the appropriate channel. Two cases have to
be considered:
Case 1
The measured value exceeds the limit value and the alarm delay
time is shorter than the remaining measurement time of this cycle.
If the measured value stays above the limit value, the alarm event
is acknowledged after the alarm delay time.
Case 2
The measured value exceeds the limit value and the alarm delay
time is longer than the remaining measurement time of this cycle.
At the end of the measurement cycle, the alarm delay time is
suspended. If the measured value still exceeds the limit value at
the beginning of the next measurement cycle, the alarm delay
time is resumed. This procedure is continued until the end of the
alarm delay time. At this point the alarm event is acknowledged. In
case 2 the alarm delay time is prolonged by the measurement
cycle of the other channel.

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Log Book
All events are stored in a circular buffer using short notation. This
buffer can store up to 99 events.
Events are:
Power Up; limit value exceedance; reset instructions; and internal
errors detected by the self monitoring.
If the Log Book capacity is exceeded, the "oldest" event is deleted
and all stored events are shifted one position, freeing space to
store the new event.
The Log Book can be displayed on the built-in display or read via
the remote interface.
Each Log Book entry begins with an "H", (for History) followed by a
two digit running number and a 'short' notation of the event.
Example:
H03 K1 Lim1 A
Meaning:
H03 Label of Log Book entry
K1 Relay K1 tripped
Lim1 A because limit value lim_1 of channel A has been
exceeded.
The Log Book is deleted every time the VIBROCONTROL 1100 is
powered up. It can also be deleted using the built-in operator panel
or via the serial interface.

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Relays
Three relays are provided which are activated on alarm exceedan-
ce if so programmed.
They are designated as K1, K2, and K3.
Programming the Relays
Relay operation is defined by the setup parameters:
1. Which limit value controls which relay.
2. Latching or Non-Latching Mode.
3. Energized or de-energized Operation.
4. Control a relay by combining several limit values using a
logical OR or AND statement.
Comment to 1.
Limit value exceedances can be configured as single events or
grouped events.
A configuration that is commonly used is, lim_1A and lim_1B con-
trol relay K1, and lim_2A and lim_2B control relay K2.
Comment to 2.
Latching Mode
The relay remains latched (tripped) until it is reset using the control
panel, reset switch, or via the remote interface.
Non-Latching Mode
The relay is automatically reset when the measured value drops
below the limit value.
Comment to 3.
This choice depends on the user's philosophy. What is important
though, is preventing a false relay trip if power to the VIBROCON-
TROL 1100 is disconnected.
Mode No Alarm Alarm
Normally Energized
Normally De-Energized Relay active Relay not active Relay not active Relay active

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Comment to 4.
AND
Several limit values control one relay. This relay is tripped only if
all limit values are exceeded.
OR
Several limit values control one relay. This relay is tripped if at
least one limit value is exceeded.
Note:
If a measuring channel or a limit value has been set to "not active"
("N") and this limit value is combined with an AND, this logical
condition can never become "true". Therefore the alarm indication
can never be activated.
OK-Monitoring
The OK-Monitoring is used to report malfunctions and/or data
failure of the program and data stores, electric damages or the
failure of the pickup and its connection lines. The monitoring
covers an "External range recording" of the vibration signal. Errors
caused by cable breakage, short circuit or earth fault of the signal
lines are recognized, reported and written into the log book.
Since the OK-Relay is normally energized, the messages are
output in the operating state network ON/OFF.

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System messages such as:
–no calibration data in EEprom
–no dialog data in EEprom
will cause an OK-error which can be reset by means of Relay
Reset.
Important:
When an OK error occurs, all limit relays maintain their current
status. After removing the OK error and acknowledging it by
"Relay Reset", they perform their normal function again.
In case of a system error message, e.g.
–calibration data not readable (ER -31)
–no valid calibration data in the EEPROM (ER -37)
a hardware error is present.
This error can only be eliminated by a Schenck service station or
in the parent company.

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Inputs and Outputs
Inputs
VIBROCONTROL 1100 accepts vibration velocity transducers or
accelerometers.
In 2 channel operation, pickups of the same type with the same
sensitivity are required.
Accelerometers (passive transducers) are powered by the internal
power supply of VIBROCONTROL 1100.
Outputs
a) Alarm Indication
Alarm level exceedances are indicated by galvanically free relay
contacts.
b) Analog-Outputs
Two separate analog outputs are provided for analog meters or
strip chart recorders. Which measured parameter is supplied on
which analog output is determined during the setup. Each analog
output can be configured for either 0 ... 10 V or 0.4 ... 20 mA.
Remote I/O (Serial Interface)
Up to 205 VIBROCONTROL 1100 can be daisy-chained to one
serial interface of a computer or process controller. Status, Log
Book, and measured values can be read, stored, displayed,
printed, etc.
In addition the configuration of each VIBROCONTROL 1100 can
be confirmed and modified.

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Definitions
Several terms are commonly used for measured vibration para-
meters. The following is a summery of terms used in this manual.
Signal Detection Type:
Zero-to-Peak Value *)
Definition: The maximum deviation of the absolute value
of the vibration signal from zero.
Used here: peak or pc
Other terms: peak-value, amplitude, single amplitude
Signal Detection Type:
Peak-to-Peak Value *)
Definition: The maximum distance between peak nega-
tive and peak positive of the vibration signal.
Used here: peak-to-peak or ppc
Other terms: amplitude, double amplitude
Signal Detection Type:
Root-Mean-Square Value
Definition: The square root of sum of the squared ampli-
tudes over a period of time.
Describes the energy content of a vibration
signal.
Used here: rms
Other terms: effective value, true rms value
*) VIBROCONTROL 1100 measures the true rms value.Peak
values are calculated from the rms value using the formulae:
Beispiel:
zero-to-peak value =rms value x 1.41 [pc]
peak-to-peak value =rms value x 2.82 [ppc]

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VC 1100 Technical Data
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2 Technical Data
Supply Voltage
• Type VC-1100-C01
Type VC-1100-C11 115 V AC or
230 V AC +15 % / -25 %
jumper selectable
48 ... 400 Hz
Power consumption approx. 15 VA
• Type VC-1100-C02
Type VC-1100-C12 24 V DC (16 ... 36 V)
Power consumption approx. 15 W
Fuses
• Supply Voltage 115/230 V AC 2 Thermo-Resistors
250 °F (125 °C)
built-in the primary
transformer windings
• Supply Voltage 24 V DC NTC - Resistor
Transducer supply -24 V 2 x 30 mA short-circuit-
proof
• EMC Emitted interference according to EN 50081-1
Immunitity from interferences according to EN 50082-2

Technical Data VC 1100
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Housing and Operating Conditions
Housing
• Material Aluminium AL Si 12
Seal type IP 65 (DIN 40050) splash proof
(water)
Dimensions 360 x 160 x 91 mm (LxWxH)
14.2 x 6.3 x 3.6 inch (LxWxH)
• Weight app. 5 kg (11 lbs)
• Cable fittings 9 x PG 9 and 3 x PG 13.5 feed-
throughs adapters
PG 9 to 1/2-14 NPT are
available
• Paint RAL 7032 (grey)
Top cover RAL 2011 (orange)
Figure 2-1: Housing Dimensions
Operating Conditions
• Storage Temperature Range
-20 ... + 70 °C (4 ... 148 °F)
• Operating Temperature Range
0 ... + 50 °C (32 ... 122 °F)
• Rel. Humidity max. 95 % non condensing