CEMB USA TDSP User Manual

Instrumentation Division

TDSP vibration monitoring system

CEMB S.p.A. - Via Risorgimento, 9 - 23826 Mandello del Lario (LC) - Italy -

Phone [phone] - - Fax [phone]

www.cemb.com e-mail: [e-mail]

CEMB/TDSP SYSTEM/VERSION 1/05-10-10

TDSP SYSTEM

The instrumentation for monitoring vibrations
and diagnostics of machinery using the TDSP
system is based on CEMB’s many years
experience in the field of vibro-technics and the
diagnosis of rotating machinery.

Thousands of CEMB systems have been installed
to protect steam / gas / hydraulic turbines,
pumps, compressors and fans.

In addition to all the principal functions required
for monitoring, the TDSP system is designed
with particular care to the operator interface, in
order to simplify all the operations necessary for
managing the equipment correctly.

The new TDSP system is designed using modern
DSP based architecture to meet the demands for maximum flexibility and modularity,
providing a high performance solution to a wide range of needs. The TDSP system can be
used either for protecting a single machine that calls for just a few measuring points,
monitoring, acquiring and storing typical data for intelligent supervision or as a
sophisticated diagnostic system used for machinery in a complete plant.

The system is based on the TDSP processing module, which is dual-channel and can
operate on a stand-alone basis. Its terminal board makes it possible to connect to
measuring transducers with analogue and digital inputs/outputs. The ethernet port on
the front is used for configuring the board and makes it possible to connect to a dedicated
PC that can be used for presenting data and for connecting to external diagnostic
systems and/or DCS.

CEMB/TDSP SYSTEM/VERSION 1/05-10-10

1. Basic structure of the TDSP system

The basic composition is the most simple in the system and is normally used for
controlling a relatively low number (6-10) of measuring points spread over one or more
machines.

This solution guarantees the basic protection functions:

- Acquisition of sensor signals (accelerometers, velocity sensors and proximity

probes)

- Availability of an analogue signal (0 – 10 V or 4 – 20 mA) proportional to the

magnitude measured

- Availability of alarm contacts when prepoints are exceeded

Depending on the number of channels, the instrumentation’s structure comprises:

- A standard 19” rack

- Power supply (possibly redundant)

- Up to 8 TDSP modules

Software for setting all the operating parameters for the processing module simplifies this
operation and makes it possible to save all the settings selected in a PC.

CEMB/TDSP SYSTEM/VERSION 1/05-10-10

2. Intermediate structure

This solution extends the basic composition by using the ethernet link to interface all the
TDSP modules with an industrial PC for acquiring, displaying and saving data.

The composition for the basic structure has the following devices added:

- 1 switch for the ethernet connection of the various modules to the PC

- 1 industrial PC with suitable characteristics

This configuration is combined with a specific software package for managing and
presenting data in online mode and can display:

⇒ The values for the various magnitudes
⇒ The measurement trend
⇒ The status of the various measurements
⇒ Alarm indication

Measurement information is made available in real-time for third party applications as well,
using an OPC Server/Client type interface.

Where required, a further software package can be supplied for saving data (in a database
or for subsequent analysis).

CEMB/TDSP SYSTEM/VERSION 1/05-10-10

3. Complete structure

The industrial PC for the intermediate configuration can be inserted in the end user area
network (LAN).

All the historical data acquired can be accessed using specific software for the purposes of
advanced analysis and diagnosis of the machinery.
This dedicated software is able to display:

⇒ Vibration spectrum
⇒ Wave form
⇒ Orbit
⇒ Spectral bands
⇒ Start-up and coast down spectra

CEMB/TDSP SYSTEM/VERSION 1/05-10-10