Key Features and Benefits

– From the Vibro-Meter® product family

– Signal interface card with 4 dynamic signal inputs and 2 tachometer (speed) inputs for MPC4 mechanical protection cards

– Screw terminal connectors for all input/output connections (48 terminals)

– Includes 4 relays that can be used for alarm signaling www.honeywell-diver.com under software control

– 32 fully programmable open collector outputs (jumpers optional) for connection to IRC4 and RLC16 relay cards

– Buffered “raw” sensor signals and analog output signals (voltage or current) for vibration channels

– EMI protection for all inputs and outputs

– Real-time plug-in cards (hot-swappable)

– Available in “standard” and “circuit independent” versions

Applications

– Mechanical protection and/or basic condition monitoring

Description

IOC4T Card

The IOC4T Input/Output card is the signal interface for Meggitt’s VM600 series MPC4 machine protection card.

It is mounted on the rear of the VM600 rack and connects directly to the rack backplane via two connectors.

Each IOC4T card is associated with the corresponding MPC4 card and is mounted directly to the rear of the VM600 rack (ABE04x or ABE056).

The IOC4T operates in slave mode and communicates with the MPC4 through connector P2 using the Industrial Packet (IP) interface.

The front panel of the IOC4T (rear of the VM600 frame) contains terminal strip connectors for connecting the transmission cables from the measurement chain (sensors and/or signal conditioners).

The threaded terminal connectors are also used to input all signals from any external control system and output all signals to any external control system.

The IOC4T card protects all inputs and outputs from electromagnetic interference (EMI) and signal surges and complies with electromagnetic compatibility (EMC) standards.

The IOC4T connects raw dynamic (vibration) and velocity signals from sensors to the MPC4.

These signals are processed and passed back to the IOC4T and made available on its front panel (rear of the VM600) terminal strip.

For dynamic signals, four on-board digital-to-analog converters (DACs) provide calibrated signal outputs in the 0 to 10 V range.

In addition, four on-board voltage-to-current converters provide current output signals in the 4 to 20 mA range (jumper optional).

The IOC4T contains four local relays that can be used for any specific alarm signal under software control.

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.