Vibro-Meter VM600 MPC4 Mechanical Protection Card Description 2

Description

Processed dynamic (vibration) and velocity signals are available as analog outputs at the rear of the rack (on the front panel of the IOC4T).

Voltage signals (0 to 10 V) and current signals (4 to 20 mA) are available.

The MPC4 performs self-tests and diagnostic procedures at power-up.

In addition, the card's built-in “OK system” continuously monitors the signal level provided

by the measurement chain (sensors and/or signal conditioners) and indicates any problems

caused by broken transmission lines, faulty sensors or signal conditioners.

An LED on the front panel of the MPC4 indicates whether a processing or hardware error has occurred.

A further six LEDs, one for each input channel, indicate whether the OK system has detected

a fault and whether an alarm has occurred on the channel.

There are three versions of the MPC4 card: the “standard” version, the “circuit independent” version,

and the “safe” (SIL) version, all of which use the appropriate IOC4T input /output cards as card pairs.

Different versions of the MPC4 card

There are different versions of the MPC4 card, including “Standard”, “Circuit Independent” and “Secure” (SIL) versions.

In addition, some versions have a conformal coating applied to the card's circuitry to provide additional

environmental protection against chemicals, dust, moisture and temperature extremes.

Both the “Standard” version and the “Safety” (SIL) version of the MPC4 card are certified to

IEC 61508 and ISO 13849 for use in functional safety environments such as SIL 1 according to IEC 61508 and ISO 13849-1 for PL c.

The “standard” MPC4 card is the original version and supports all functions and processing modes.

The “standard” MPC4 is suitable for safety systems using the VM600 rack.