parkerVM600Mk2 MPC4Mk2 + IOC4Mk2 machinery protection modules

modules monitor and protect rotating machinery 

as part of a VM600Mk2 rack-based monitoring 

system.

The MPC4Mk2 module is always used with an 

associated IOC4Mk2 module as a set of modules. 

Both the MPC4Mk2 and the IOC4Mk2 are singlewidth module that occupy a single VM600Mk2

rack slot (module position). The MPC4Mk2 is 

installed in the front of a VM600Mk2 rack and the 

associated IOC4Mk2 is installed in the rear of the 

rack, in the slot directly behind the MPC4Mk2. 

Each module connects directly to the rack’s 

backplane using two connectors.

Note: The MPC4Mk2 + IOC4Mk2 modules are 

compatible with all VM600Mk2 racks (ABE04x 

system racks and ABE056 slimline racks) and later 

VM600 racks.

System communications

In a VM600Mk2 system (one or more 

MPC4Mk2 + IOC4Mk2 modules and any associated 

RLC16Mk2 modules), the main communications 

interface is the LAN (Ethernet) connector on the 

front panel of each MPC4Mk2 module, which is 

used for used for communication with the 

VibroSight® software running on an external 

computer.

In a VM600Mk2 rack (ABE4x), the VME bus can be 

used to share information between modules in 

the rack. For example, an MPC4Mk2 + IOC4Mk2

module can provide information such as 

measurement, alarm and/or status data to a set 

of CPUMk2 + IOCMk2 modules which can then 

share the information via one of its industry 

standard fieldbuses.

In a VM600Mk2 system (one or more 

MPC4Mk2 + IOC4Mk2 modules and any associated 

MPC4Mk2 modules), the RLC16Mk2 modules are 

controlled and operated by a MPC4Mk2, as 

determined by the configuration. The VM600Mk2

rack’s Open collector (OC) bus and Raw bus are 

used to exchange control and status information 

between the MPC4Mk2 + IOC4Mk2 and RLC16Mk2

modules.

Relays

The MPC4Mk2 + IOC4Mk2 machinery protection 

modules include five relays. The four userconfigurable relays (RL1 to RL4) can be used by a 

VM600Mk2 system to remotely indicate system 

alarm and/or status information. While, a 

common circuit-fault relay (FAULT) is used to 

indicate a problem with the MPC4Mk2 + IOC4Mk2

modules as detected by the internal diagnostics 

(BIST).

The relays in a VM600Mk2 system (specifically one 

or more sets of MPC4Mk2 + IOC4Mk2 modules and 

any associated RLC16Mk2 modules), are driven by 

control circuitry that supports a VM600Mk2 system 

safety-line, that is, a system-wide control signal 

that automatically drives all system relays 

(IOC4Mk2 and RLC16Mk2) and analog outputs 

(IOC4Mk2) to a safe state should a problem be 

detected. In this way, IOC4Mk2 and RLC16Mk2

relays configured as normally energised (NE) can 

always be de-energised in the event of a problem 

with one of the components of the relay coil 

control signal.

Note: This supports the “de-energise to trip 

principle” required in safety-related applications.

Software

MPC4Mk2 + IOC4Mk2 modules, as part of a 

VM600Mk2 system), are software configured using 

the VibroSight® software.

To meet stringent cybersecurity and API 670 

requirements, MPC4Mk2 + IOC4Mk2 modules 

segregate machinery protection (MPS) and 

condition monitoring (CMS) by using separate 

configurations and different VibroSight 

configuration software:

• VibroSight Protect supports the configuration 

and operation of the machinery protection (MPS) 

functionality for a VM600Mk2 system.

• VibroSight Capture supports the configuration 

and operation of the condition monitoring (CMS) 

functionality for a VM600Mk2 system.

• Other VibroSight software modules support 

operations such as data display and analysis 

(VibroSight Vision), data logging and postprocessing (VibroSight Server) system 

maintenance (VibroSight System Manager), etc.

DESCRIPTION (continued)

More generally for extended condition monitoring 

system (CMS) applications, the VibroSight 

software supports the configuration and 

operation of XMx16/XIO16T modules for condition 

monitoring and/or combustion monitoring, 

including the processing and presentation of 

measurement data for analysis. VibroSight is also 

used to configure and manage CPUMk2 + IOCMk2

modules.

Note: The VibroSight® software is also from the

vibro-meter® product line.

Applications information

As part of a VM600Mk2 system, 

MPC4Mk2 + IOC4Mk2 machinery protection 

modules are ideal for the monitoring and 

protection of critical assets such as gas, steam or 

hydro turbines and other high-value rotating 

machines in a wide range of industrial 

applications.

For further information, contact your local 

Meggitt representative

Supported sensors

Currently available : Compatible with a wide range of sensors and measurement chains 

with current (2-wire) or voltage (3-wire) outputs, including the 

following sensors from the Meggitt vibro-meter® product line:

• CAxxx vibration sensors (piezoelectric accelerometers)

• CExxx and PVxxx vibration sensors (piezoelectric accelerometers