Vibro-Meter 200-530-SSs-HHh CMC16

Description

Condition Monitoring Card
Type CMC 16
] 16 individually configurable dynamic channels
] 16 parallel programmable anti-aliasing filters and
ADCs
] First 4 channels also configurable as tacho inputs
] Last 12 channels also configurable as process
values
] VME architecture
] Configurable Synchronous and Asynchronous
sampling
] High resolution 3200-line FFT
] 10 fully configurable processed outputs per
channel, which can be either frequency bands or
time-domain based outputs
] 6 configurable alarms per processed output with
hysteresis deadbands
] Schedule, ‘on-alarm’ and ‘on exception’ based
logging
] On-board buffer storage
] Status indication by 3-colour LED on front panel
] Live insertion / removal of cards with automatic
configuration
] Ethernet and Serial RS-4851 communication
options

The CMC 16 Condition Monitoring Card is the central
element in Vibro-Meter’s VM600 series Condition
Monitoring System (CMS).
This intelligent front-end Data Acquisition Unit (DAU)
is used in conjunction with the VM600 CMS software
to acquire, analyse and transmit results to a host
computer via the VM600 series CPU M module with
Ethernet controller or directly via serial links.
The inputs are fully programmable and can accept
signals representing speed, phase reference,
vibration (acceleration, velocity or displacement),
dynamic pressure, airgap rotor and pole profile, any
dynamic signals or any quasi-static signals. Signals
can be input from adjacent Machinery Protection
Cards (MPC 4) via the VM600 ‘Raw Bus’ and ‘Tacho
Bus’ or externally via the screw terminal connectors
on the IOC 16T. The IOC 16T modules also afford
signal conditioning and EMC protection and allow
inputs to be routed to the CMC 16, which includes 16
programmable tracked anti-aliasing filters, and
Analog-to-Digital Converters (ADC). On-board
processors handle all control of acquisition,
conversion from time domain to frequency domain
(Fast Fourier Transform), band extraction, unit
conversion, limit checking, and communication with
the host system.
The 10 available outputs per channel can include
RMS, peak, peak-peak, true peak, true peak-peak
values, Gap, Smax, or any configurable band based
upon synchronous or asynchronously acquired
spectra. Acceleration (g), velocity (in/sec, mm/sec)
and displacement (mil, micron) signals are catered for
and can be converted for display to any standard. If
configured, data is sent to the host computer only on
exception, for example, only if the change of value
exceeds a pre-defined threshold. Values can also be
averaged for smoothing or noise reduction.
Events are generated when values exceed one of the
6 configurable limits, exceed rate-of-change alarms or
deviate from stored baselines. However, adaptive
monitoring techniques can also be employed to
dynamically adjust alarm set points based upon
machine parameters such as speed and load.
Machine start-ups, shutdowns and overspeeds are
detected from checks of speed reference against
configured trigger levels. In Transient Mode, higher
density logging is available based upon configurable
time and speed intervals. Vibration measurement and
logging is achieved in speed ranges from 15 rev/min
to 30,000 rev/min.
The CMC 16 acquires and processes high-resolution
data captured at scheduled intervals or on alarm
detection (waveforms, spectra and orbits). Spectral
resolution, frequency span or order span, window
type, averaging mode and number of averages are
fully configurable. The capacity also exists to trigger
extended capture of time-based data over several
minutes using an ‘Oscilloscope Mode’ as this can
provide valuable data, particularly during machine
start-up.1
For specific applications, contact your Vibro-Meter
representative.