For example, in a typical application, these relays can be used to signal an MPC4 fault or

a problem detected by the common alarms (Sensor Normal, Alarm, and Hazard).

In addition, 32 digital signals representing alarms are transmitted to the rack backplane and

can be used by the optional RLC16 Relay Card and/or IRC4 Intelligent Relay Card (with optional jumpers)

mounted in the rack.

Application Information

The IOC4T, when paired with the MPC4 Machinery Protection Card, is ideally suited for

machinery monitoring and protection in a variety of industrial applications.

For more information on using the MPC4/IOC4T card pair, see

VM600 Machinery Protection System (MPS) Hardware Manual and the VM600 MPSx Software Manual.

For information on using the MPC4/IOC4T card pair in a functional safety environment, refer to the

VM600 Functional Safety manual.

The MPC4 card can drive the four local relays on the IOC4T card, as well as the relays on 

the RLC16 relay card and/or the IRC4 Smart Relay card via the Raw bus or open collector (OC) bus in the

VM600 chassis.

See Relay Characteristics on page 4 for IOC4T card relay functions.