Vibro-Meter VM600 IOC4T Input/Output Card Application

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.

Parameters

Dynamic Signal Input

Filtering: Filtering to prevent electromagnetic interference (EC compliant).

Refer to the VM600 MPC4 Mechanical Protection Card datasheet for more information.

Buffered dynamic signal output

Filter: Filtered to prevent electromagnetic interference (EC compliant).

Refer to the VM600 MPC4 Machine Protection Card datasheet for more information.

Speed/phase reference input

Filter: Filtered to prevent electromagnetic interference (EC compliant).

Refer to the VM600 MPC4 Machine Protection Card datasheet for more information.

Discrete Signal Interface (DSI) inputs

Control signals

- Alarm Reset (AR): A closed contact between the DSI AR and DSI RET inputs resets (clears) the MPC4/IOC4T card's alarm to lockout.

NOTE: The alarm reset input (DSI AR) is edge sensitive and requires a high to low transition to activate the reset.

- Danger Bypass (DB) : A closed contact between the DSI DB and DSI RET inputs inhibits (bypasses) the Danger Relay output.

- Trip Multiplier (TM): The closed contact between the DSI TM and DSI RET inputs multiplies

the alarm level by a scaling factor (configurable via software) for adaptive monitoring.

Principle of operation: Detects open or closed circuits on the inputs Alarm outputs

Alarm relays: 4 per IOC4T card.

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.