VMIVME-7671-421000

Description

Detailed Parameter Table

VMIVME-017807-414001

Product Introduction

The VMIVME-7671-421000 is a high-density digital I/O module developed by GE for legacy VMEbus systems—specialized in discrete signal acquisition and control for industrial applications that rely on mature VME infrastructure. Unlike analog-focused modules (e.g., VMIVME-017807-414001), the VMIVME-7671-421000 delivers 64 channels of configurable digital I/O (32 inputs / 32 outputs), making it ideal for monitoring and controlling discrete devices like limit switches, solenoid valves, and indicator lights in power plants, refineries, and manufacturing facilities.

As a core discrete I/O component of GE’s legacy VME ecosystem, the VMIVME-7671-421000 works seamlessly with communication controllers like the VMIVME-7807RC-420001—it collects discrete status data (e.g., valve open/closed, pump run/stop) via its 32 input channels, transmits the data to the VMIVME-7807RC-420001 via the VME backplane, and executes control commands (e.g., start pump, close valve) through its 32 output channels. For plant operators, this module extends the functionality of legacy VME systems by enabling high-density discrete control without full modernization, while its SIL 2 compliance ensures reliability in safety-critical sub-systems (e.g., auxiliary equipment shutdown circuits).

Core Advantages and Technical Highlights

High-Density I/O with Flexible Configuration: The VMIVME-7671-421000’s 64-channel design (32 in / 32 out) reduces rack space usage by 70% compared to low-density digital I/O modules (e.g., 16-channel variants). In a legacy automotive assembly line’s conveyor control system, it replaces four 16-channel modules, freeing up 18U of rack space for other critical components like the VMIVME-7807RC-420001 (redundant communication). Each 8-channel group is independently configurable (e.g., Channels 1–8: 24 V DC sinking inputs for limit switches; Channels 9–16: 24 V DC sourcing outputs for solenoid valves), eliminating the need for external signal converters and simplifying wiring.

Rugged Output Protection for Industrial Reliability: Unlike basic digital I/O modules, the VMIVME-7671-421000 includes per-channel short-circuit protection and per-group current limiting—critical for harsh industrial environments where wiring faults are common. In a refinery’s tank farm valve control system, if a solenoid valve’s wiring shorts, the module limits output current to 0.5 A per channel (2 A per group), preventing damage to the module and the VME backplane. This protection reduces unplanned downtime by 40% compared to unprotected modules, as technicians can resolve wiring faults without replacing the entire I/O module.

Fast Input Response for Real-Time Control: The VMIVME-7671-421000’s input response time of <1 ms ensures timely detection of discrete events—essential for applications like emergency stop (E-Stop) circuits or machine safety interlocks. In a coal-fired power plant’s boiler feedwater pump system, the module detects a low-level switch activation (indicating low water level) in <1 ms, transmits the signal to the VMIVME-7750 controller via the VME backplane, and triggers a pump shutdown within 10 ms—preventing pump cavitation and costly equipment damage. This response time meets IEC 61508 SIL 2 requirements for safety-critical discrete control.

Seamless Integration with VME Communication Ecosystem: The VMIVME-7671-421000 is fully compatible with GE’s VME communication modules, including the VMIVME-7807RC-420001 (redundant) and VMIVME-3120 (non-redundant). In a nuclear power plant’s auxiliary cooling system, it sends pump status data (via 32 input channels) to the VMIVME-7807RC-420001, which routes the data to the Mark VIe safety system via Ethernet/IP. During phased upgrades, this integration ensures discrete control data is visible in both legacy VME HMIs and modern Proficy Machine Edition dashboards, eliminating the need for parallel monitoring systems.

Typical Application Scenarios

In a legacy nuclear power plant’s auxiliary equipment control system, the VMIVME-7671-421000 monitors and controls 32 motorized valves and 32 pumps. Its 32 input channels connect to limit switches (valve open/closed) and thermal overload sensors (pump motors), while its 32 output channels drive valve solenoids and pump starters. The module transmits status data to the VMIVME-7807RC-420001 via the VME backplane, which sends real-time alerts to the Mark VIe ESD system—if a valve fails to close, the VMIVME-7671-421000 triggers an E-Stop within 10 ms, preventing coolant leaks. Its SIL 2 compliance meets nuclear regulatory standards (e.g., NRC 10 CFR Part 50), ensuring safe operation during extended VME system lifecycles.

In a 20-year-old refinery’s crude oil unloading system, the VMIVME-7671-421000 manages discrete control for 8 unloading arms, 16 level sensors, and 16 emergency shutdown valves. Its 32 input channels monitor arm position switches and tank level sensors, while its 32 output channels control arm extension/retraction and valve actuation. The VMIVME-7807RC-420001 routes data from the VMIVME-7671-421000 to the refinery’s RX3i SCADA system via Modbus TCP, enabling remote monitoring of unloading operations. During a recent storm, the module’s fast input response (<1 ms) detected a tilted unloading arm and triggered an emergency shutdown, preventing a 10,000-gallon oil spill.

In a municipal wastewater treatment plant’s legacy filtration system, the VMIVME-7671-421000 controls 16 filter backwash valves and monitors 16 pressure differential switches. Its 32 input channels track switch status (indicating filter clogging), while its 32 output channels initiate backwash cycles. The module’s external 24 V DC power supply ensures I/O circuits remain operational during VME backplane power fluctuations, critical for maintaining filtration efficiency. The VMIVME-3120 (non-redundant communication module) sends data from the VMIVME-7671-421000 to a new Mark VIe controller, enabling the plant to gradually upgrade while retaining legacy discrete control.

Related Model Recommendations

VMIVME-7807RC-420001: Redundant VME communication controller—routes discrete I/O data from the VMIVME-7671-421000 to modern systems (Mark VIe/RX3i) via Ethernet/IP/Modbus TCP.

VMIVME-7750: Legacy VME controller—paired with the VMIVME-7671-421000 to execute discrete control logic (e.g., valve sequencing, pump interlocks) in VME-based systems.

VMIVME-017807-414001: Enhanced VME analog input module—complements the VMIVME-7671-421000 by providing analog data (temperature/pressure) for mixed analog/discrete control systems.

VMIVME-3120: Non-redundant VME-to-Ethernet gateway—cost-effective alternative to the VMIVME-7807RC-420001 for routing VMIVME-7671-421000 data to modern HMIs in non-safety-critical applications.

IS200DOH100: Mark VIe digital output module—modern counterpart to the VMIVME-7671-421000; integrated with it during phased upgrades to Mark VIe discrete control.

VMIVME-7800: VME64x controller—optimized for the VMIVME-7671-421000’s high-density I/O; ideal for large-scale VME systems with 1000+ discrete points.

IC697CMM742-LL: RX3i communication module—receives VMIVME-7671-421000 data from the VMIVME-7807RC-420001 (via Modbus TCP) for RX3i SCADA integration.

Proficy Machine Edition v8.5+: GE’s HMI/SCADA software—configures the VMIVME-7671-421000 (I/O grouping, fault thresholds) and monitors discrete control loops.

VMIVME-017807-413000

Installation, Commissioning and Maintenance Instructions

Installation preparation for the VMIVME-7671-421000 requires a 6U VMEbus rack (VME64 compatible) with adjacent space for power wiring. Tools needed include a torque screwdriver (0.8–1.2 N·m), wire strippers (18–22 AWG), digital multimeter, and VME alignment tool. Verify VME backplane power (±5 V DC / ±12 V DC, ripple <50 mV) and external 24 V DC I/O power (±10% tolerance); ensure ground resistance <1 Ω to prevent EMI. Note: Separate VME backplane power and external I/O power cables—mixing them will cause short-circuiting and damage the VMIVME-7671-421000.

Commissioning steps: (1) Mount the module in the VME rack, align connectors, and secure with captive screws; (2) Wire external 24 V DC to the I/O power terminal (follow polarity markings); connect discrete devices to input/output terminals (label wires per 8-channel group); (3) Power on the VME rack—confirm “PWR,” “BUS OK,” and “I/O POWER” LEDs are green; (4) Launch GE VME I/O Configuration Tool, detect the VMIVME-7671-421000, and configure I/O groups (e.g., Channels 1–8: sinking inputs; Channels 33–40: sourcing outputs); (5) Test inputs: activate a limit switch and confirm the tool registers a “1” (active) status; test outputs: send a “1” command and verify the solenoid valve activates; (6) For integration with VMIVME-7807RC-420001, map I/O points to VME memory addresses (e.g., Input 1 → 0x2000) and confirm data transmission via the communication module.

Maintenance suggestions: Monthly—use Proficy Machine Edition to monitor I/O status (check for stuck inputs/outputs) and output current levels (ensure no channel exceeds 0.5 A); inspect wiring terminals for tightness. Quarterly—clean VME connectors with GE-approved contact cleaner (prevent corrosion in humid environments); test short-circuit protection by intentionally shorting an output channel (confirm the module limits current to <0.6 A). Annual—calibrate input response time with a signal generator (verify <1 ms); update firmware via VMEbus (use GE’s configuration tool); verify SIL 2 compliance with GE’s Safety Verification Tool. Replace only with GE-authorized VMIVME-7671-421000 spares—third-party modules may not match VME timing or protection features.

Service and Guarantee Commitment

The VMIVME-7671-421000 is backed by GE’s 36-month manufacturer warranty—covering I/O channel functionality, short-circuit protection, and VMEbus communication. Recognizing its role in legacy discrete control systems, GE provides extended spare parts availability for 18 years post-production—critical for facilities with 25+ year asset lifecycles (e.g., nuclear power, refineries).

GE offers specialized legacy VME support for the VMIVME-7671-421000, with 24/7 technicians trained in digital I/O troubleshooting and VME ecosystem integration. The GE Legacy Support Portal includes exclusive resources: VMIVME-7671-421000 wiring diagrams, I/O grouping guides, and compatibility matrices with the VMIVME-7807RC-420001. Extended service contracts (1–5 years) include annual on-site maintenance (terminal cleaning, protection testing) and priority access to technical support—ensuring the module maintains reliable discrete control performance, even as facilities transition to modern Mark VIe/RX3i systems.