Description: The CMCP525A Vibration Acceleration Monitors
are compatible with all voltage output accelerometers, and
they provide a 4-20 mA output proportional to the overall
measurement. Each unit provides power for the associated
transducer, processes the vibration signal to determine
overall amplitude, and outputs a 4-20 mA dc current that
is proportional to a user specified range such as 0-5 g's
in Peak or RMS detection. Combining monitors with an existing
PLC or DCS system results in a high density, low cost vibration
monitoring system. The alarm feature functions as a complete
single channel monitor that includes alert and danger alarms,
and output relays.
Buffered Output: A BNC connector mounted on the front
of the unit provides access to the buffered transducer output
signal. This includes both the unfiltered vibration signal,
and the DC bias voltage. Portable test equipment or analyzers
like SKF-CM's MicrologTM can be connected to this output
without disturbing other system outputs.
Fault Detection: On board fault detection circuitry continuously
monitors the transducer for normal operation. If a fault
occurs, the output current is reduced to 2 mA to indicate
the fault to the readout system. A red LED on the front
of the unit is turned on to provide a local indication of
Filters: For applications that require monitoring specific
frequency bands, optional high-pass and low-pass filters
can be specified. These filters are modular and can be installed
by the factory or in the field. Each module attenuates out-of-band
signals at a rate of approximately 24 dB/octave. Corner
frequencies from 2 Hz to 20 kHz may be specified. Filter
modules may be cascaded to form higher order filters or
to create a band-pass response. Filtering does not effect
the buffered transducer output.
Alarms: The CMCP525A Vibration Acceleration Monitors have
two independent set points, with LED alarm indicators and
output relay contacts (Alert and Danger). Set points are
adjustable via potentiometer, from 0 to 110% of full scale.
Each has an adjustable delay of 1 to 10 seconds. Relay contacts
can be independently configured by the user for either Normally
Open (NO) (Standard) or Normally Closed (NC) operation.
Relays are normally de-energized and can be configured for
latching or non-latching (standard) operation. Latched alarms
may be reset locally or by remote contact closure. SPST
Relay contacts are rated 5 Amps @ 30 Vdc or 250 Vac for
resistive loads. The monitors also have set point multiplication
of 3X via contact closure (2X available).
Displays And Assemblies: Various display options, NEMA
and explosion-proof enclosures, and assembled multi-channel
systems are available. Consult your sales representative.
Electrical Specifications: Power: +24 Vdc @ 45 mA max.
(30 mA typical at 2 full scale output). Reverse polarity
and transient protection included.(With the Alarm/Relay
option installed: 75 mA max.) Frequency Response (Without
optional filters): (-3 dB) 2 Hz to 20 kHz. Buffered Output:
BNC Connector 0-20 kHz. Accuracy: 0.5 % of Full Scale Range.
Output: 4-20 mA proportional to the full scale range. Maximum
Load: 600 Ohms Resistive. Case: Isolated.
Operating Temp.: -20oC to +80oC (-4oF to +176oF). Storage
Temp.: -55oC to +125oC (-67oF to +257oF). Relative Humidity:
0 - 95% Non-Condensing.
Mounting: 32 mm (G style) or 35 mm (T style) DIN Rail.
To order a standard acceleration monitor that accepts input
from a 100 mV/g Accelerometer, with a Full Scale of 10 g
with Peak Detection, specify Part Number: CMCP525A-100A-02P.
1.To order factory installed 4-pole filter modules, add
the appropriate suffix to the basic part number:
Example: adding suffix -L500 specifies a 4-pole low-pass
filter with a corner frequency of 500 Hz (30,000 cpm). Adding
suffix - H40 specifies a 4-pole High-Pass filter with a
corner frequency of 40 Hz (2400 cpm). Up to two filter modules
may be specified. Filter modules can be field installed.
If you are unsure about your filter needs, need higher order
filters or a band-pass response, consult the factory or
your regional sales office for assistance in specifying
the correct option numbers.
2.The Full Scale option specified at order entry is used
by the factory for initial calibration. However, several
other ranges can be jumper selected in the field.
3.Transducer and Full Scale options not listed in the
above table are available. Contact your sales representative.