Meggitt VM600 IRC4 620-005-000-100 Intelligent Relay Module

I. Basic Information
Brand: Meggitt (formerly Vibro-Meter)
Module Name: IRC4 Intelligent Logic Relay Card
Material PN: 620-005-000-100
System: VM600 Unit Vibration Protection System (MPS)
Installation Location: Rear slots of ABE04x / ABE056 racks, with MPC4 and AMC8 measurement cards in the front slots
Product Status: Original factory normal supply, all new original and disassembled spare parts are available for circulation, regular warranty 12 months
Safety Level: Supports SIL2 unit safety interlock scenarios

Core Functions
Extended logic interlock output
Collect up to 86 alarm, OK, and stop status signals from MPC4 and AMC8 in the rack through software configuration, and realize complex logical operations, supporting 3-out-of-2 voting in 2003, delay interlock, multi-condition combined trip, compensating for the logical capability deficiency of RLC16 ordinary relay card.
8 programmable relay contacts
Can be flexibly configured in two modes:
8 SPDT single-pole double-throw independent relays
4 DPDT double-pole double-throw redundant relays
Relay mode customization
Can set normal excitation (NE) / normal de-excitation (NDE), support trip delay, holding delay, compatible with ESD emergency shutdown, unit interlock protection specifications.
System fault diagnosis
Board self-check, slot matching verification, communication failure alarm, front panel LED intuitive display of operation, fault, and relay action status.
Upper-level software configuration
Special IRC4 Configurator software for independent logic configuration, configuration parameters can be downloaded, backed up, uploaded, and can be linked with X-Vu monitoring software for alarm recording.

Hardware Electrical Parameters
Terminal Configuration: Two sets of terminal blocks on the back, each set has 16 screw terminals, totaling 32 wiring terminals, all relay contacts are fully extended to the terminal blocks.
Relay Contact Capacity: Resistive load is conventional AC250V/5A, DC30V/5A, used for driving solenoid valves, trip circuits, PLC digital input.
Power Supply Method: Powered by the internal backplane of VM600 rack, no need for external separate power supply.
Operating Environment
Operating Temperature: 0℃ ~ +65℃
Storage Temperature: -20℃ ~ +85℃
Industrial EMC electromagnetic compatibility, compatible with power plants, chemical plants, compressor workshops with strong interference scenarios
Support hot swapping: Online replacement without shutting down the rack, does not affect the operation of other measurement cards.

Typical Application Scenarios
Three-out-of-2 overspeed protection for steam turbines, gas turbines, large compressors, high-high vibration interlock shutdown
Logical expansion for multi-measurement points of shaft displacement, expansion difference, vibration of the unit
Safety Instrumentation System (SIS), ESD emergency stop redundant interlock circuits
Multi-device linkage alarm, audible and visual alarm, fault remote upload to DCS/PLC