CEMB USA TDSP - Manual (Page 11)

CEMB/TDSP PROCESSING MODULE/VERSION 2/09-05-2012
TDSP processing module
Description
The TDSP processing module is equipped with a modern, high-performance digital
processor. This guarantees great reliability as it is able to operate fully autonomously,
running a series of functions simultaneously.
- Suitably conditioning and acquiring the signal from two measuring transducers for
continuous monitoring of mechanical parameters
- Converting these signals into digital format and processing them adequately using a
powerful DSP
- Measuring vibrations – differential and absolute expansion – axial displacement –
eccentricity – rotor speed
- Checking exceeding of preset thresholds
- Suitably driving a series of relays in order to be able to protect rotating machines in
the best manner
- Making available two analogic outputs proportional to the magnitudes measured
- Providing information on the status and level of measurement by means of multi-
colour LEDs on the front panel
The dual channel TDSP module can transfer data to a dedicated PC via a 100 Mbps
ethernet link that guarantees the proper transfer speed for the system’s needs.
By means of the dedicated PC the data can be made available to an external DCS or used
by adequate display, saving and post-analysis programs.
The TDSP processing module is specifically designed to form the basis of a modular
system that is able to cover the most different needs:
-
From just a few measuring points to an entire plant
- From a protection function to in-depth advanced diagnostic analysis of any rotating
machine
The processing module’s basic functions include:
-
Protection against short-circuits on inputs and outputs
- Self-diagnosis function for anomalous conditions (board faults, sensor malfunctions,
no phase reference)
- Conditioning and acquisition of a signal from two transducers (accelerometers,
velocimeters and proximity sensors)
- Sampling and digital conversion of signals
- LED measurement status indication
- LED indication when preset thresholds are exceeded
- N° 2 analogic outputs 0 – 10 V or 4 – 20 mA opto-insulated
- N° 4 digital Bypass and Trip-Multiplier inputs
- N° 6 fully configurable relays with NO and NC contacts
- Replica of inputs on the front BNCs
- Possibility of hot insertion and extraction (hot-plug / hot-swap) without
disconnecting the power supply to the box and without interfering with the other
boards