Machinery Protection Card Type MPC4

2024-11-08

Machinery Protection Card Type MPC4

The MPC4 Machinery Protection Card is the central element in Machinery Protection System. This very versatile card is capable of measuring and monitoring up to 4 dynamic signal inputs and up to 2 speed inputs simultaneously.

A variety of speed sensors may be connected (e.g. systems based on proximity probes, magnetic pulse pick-up sensors, systems providing TTL signals). Fractional tacho ratios are supported.

The dynamic signal inputs are fully programmable and can accept signals representing acceleration, velocity, displacement (proximity) or other parameters. On-board multi-channel processing allows measurement of various physical parameters, including relative and absolute vibration, Smax, eccentricity, thrust position, absolute and differential housing expansion, displacement, dynamic pressure, etc.

Digital processing includes digital filtering, integration or differentiation (if required), rectification (RMS, mean value, true peak or true peak-to-peak), order tracking (amplitude and phase) and measurement of the transducer-target gap.The calibration may be expressed in metric or imperial units. Alert and Danger set points are fully programmable, as are alarm time delay, hysteresis and latching. The Alert and Danger levels can be adapted as a function of the speed or any external information.

A digital output is available internally (on the IOC 4T card) for each alarm level. These alarm signals may be routed within the rack to drive change-over relays on an optional RLC 16 relay card.

The processed dynamic signals and speed signals are available at the rear of the rack as analog output signals. Voltage-based (0-10 V) and current-based (4-20 mA) signals are provided.

The MPC 4 performs a self-test and diagnostic routine on power-up. In addition, the card’s built-in “OK System” continuously monitors the level of signals provided by the sensors and indicates any problem due to a broken transmission line, faulty transducer or conditioner.

An LED indicator on the MPC 4 front panel indicates whether a processing or hardware error has occurred. Six additional LEDs (one per channel) indicate whether the OK System has detected a fault and whether an alarm has occurred on the channel.

FEATURES:

• Continuous on-line Machinery Protection Card

• Real-time measurement and monitoring using stateof-the-art DSP techniques

• Fully VME-compatible slave interface

• Fully software configurable via RS-232 or VME

• Four programmable inputs (e.g. vibration, pressure, etc. ) and two programmable tachometer inputs

• Programmable broad-band and tracking filters

• Performs simultaneous amplitude and phase monitoring in order tracking mode

• Programmable Alert, Danger and OK set points

• Adaptive Alert and Danger levels

• Front panel BNC connectors for easy analysis of raw signals

• 7 front panel LEDs showing monitoring status and alarms