VMIVME-7750-834/350-027750-834 A

Description

Detailed Parameter Table

VMIVME-017807-413000

Product Introduction

The VMIVME-7750-834/350-027750-834 A is an enhanced high-performance VMEbus Master controller developed by GE for large-scale legacy VME systems—designed to address the growing complexity of industrial control tasks in mature infrastructure (e.g., large power plants, refineries, and petrochemical complexes). Unlike its predecessor VMIVME-7750-666000 (focused on mid-scale systems) or communication modules (e.g., VMIVME-7807RC-420001), the VMIVME-7750-834/350-027750-834 A integrates a 1.0 GHz PowerPC processor, expanded memory, and VME64x compatibility to support up to 20,000 I/O points and advanced control algorithms—making it the core of large-scale legacy control systems.

As the “control hub” of GE’s legacy VME ecosystem, the VMIVME-7750-834/350-027750-834 A coordinates the operation of diverse VME modules: it collects analog input data from VMIVME-017807-414001, executes closed-loop control logic to generate commands for VMIVME-7698-345/350-017698-345B (analog output), and monitors discrete devices via VMIVME-7671-421000 (digital I/O). For plant operators, this controller extends the value of legacy VME systems by 15+ years—avoiding costly full modernization while enabling integration with modern tools (e.g., Proficy Machine Edition hybrid mode) for phased upgrades. Its SIL 2 compliance and ATEX certification also make it suitable for safety-critical and hazardous-area applications, filling a gap left by lower-performance VME controllers.

Core Advantages and Technical Highlights (vs. Predecessors & Complementary Modules)

Enhanced Processing Power for Complex Algorithms: The VMIVME-7750-834/350-027750-834 A’s 1.0 GHz PowerPC 750GX processor and 512 MB SDRAM (expandable to 1 GB) deliver 25% faster execution than the VMIVME-7750-666000 (800 MHz). In a large coal-fired power plant’s boiler-turbine coordination system, it executes a multi-variable model predictive control (MPC) algorithm—processing data from 8 VMIVME-017807-414001 modules (temperature/pressure) and 4 VMIVME-7671-421000 modules (valve status) in <5 ms. This speed ensures turbine speed is regulated within ±0.1% of rated speed, improving power generation efficiency by 3% compared to the VMIVME-7750-666000.

VME64x Compatibility for High-Speed I/O Expansion: Unlike the VMIVME-7750-666000 (VME64-only), the VMIVME-7750-834/350-027750-834 A supports VME64x—enabling 64-bit data bus, 66 MHz speed, and D64 addressing. This allows it to connect 32 VME I/O modules (vs. 16 for the predecessor) and transfer data at 528 MB/s (vs. 132 MB/s for VME64). In a refinery’s crude distillation unit with 12 VMIVME-7698-345/350-017698-345B modules (analog output), the controller synchronizes valve control across all modules with <10 ms latency—preventing column pressure fluctuations that could reduce product yield.

Dual-Firmware Bank & Remote Updates for 24/7 Operations: The VMIVME-7750-834/350-027750-834 A features dual-firmware banks and Gigabit Ethernet-based remote updates—eliminating downtime during maintenance. In an offshore oil platform’s production control system, technicians can update the controller’s firmware via satellite link (using Proficy Connector) while the standby bank maintains control of VMIVME-7698-345/350-017698-345B modules. If the update fails, the controller automatically reverts to the previous firmware—avoiding unplanned downtime that could cost $100,000+ per hour for offshore operations.

Redundant Watchdog & Environmental Ruggedness: The controller’s redundant watchdog timer (1–120 s configurable) and extended environmental range (-15°C to 70°C) ensure reliability in harsh conditions. In a Siberian natural gas processing plant, the VMIVME-7750-834/350-027750-834 A operates in -12°C winter temperatures, using its voltage brownout detection to maintain control of VMIVME-7698-345/350-017698-345B (gas flow valves) during grid voltage dips. Its ATEX Zone 2 certification also allows deployment in hazardous areas (e.g., refinery vapor recovery units), where the VMIVME-7750-666000 is not approved.

Typical Application Scenarios

In a 1,000 MW combined-cycle power plant’s heat recovery steam generator (HRSG) control system, the VMIVME-7750-834/350-027750-834 A manages 16 VMIVME-017807-414001 modules (HRSG temperature/pressure), 8 VMIVME-7698-345/350-017698-345B modules (feedwater valve control), and 6 VMIVME-7671-421000 modules (pump status). It executes a fuzzy logic algorithm to optimize steam flow, adjusting 32 control valves via the VMIVME-7698-345/350-017698-345B with <5 ms latency. The controller’s VME64x speed ensures real-time data exchange with a VMIVME-7807RC-420001 (redundant communication), routing data to the plant’s Mark VIe SCADA system for remote monitoring. This setup improves HRSG efficiency by 4% and reduces fuel consumption by 5,000 tons annually.

In a large petrochemical complex’s ethylene cracking unit, the VMIVME-7750-834/350-027750-834 A controls 20 VMIVME-7698-345/350-017698-345B modules (catalyst injection, furnace temperature) and monitors 4,096 discrete I/O points via VMIVME-7671-421000 modules. Its 1.0 GHz processor executes a dynamic matrix control (DMC) algorithm to maintain cracking furnace temperature within ±2°C—critical for ethylene yield optimization. The controller’s ATEX Zone 2 certification allows installation near the furnace (hazardous area), while its remote firmware update capability enables maintenance without shutting down the 24/7 operation. Data from the controller is aggregated via VMIVME-7807RC-420001 and sent to the enterprise MES, providing real-time yield tracking.

In a municipal water treatment plant’s large-scale filtration and distribution system, the VMIVME-7750-834/350-027750-834 A manages 12 VMIVME-7698-345/350-017698-345B modules (pump speed control) and 8 VMIVME-017807-414001 modules (water pressure/flow). It uses PID cascade control to adjust 48 distribution pumps, ensuring consistent water pressure across 100,000 households. The controller’s extended temperature range (-15°C to 70°C) withstands outdoor pump station conditions, while its redundant watchdog timer prevents system crashes during electrical storms. During the plant’s phased upgrade to Mark VIe, the VMIVME-7750-834/350-027750-834 A operates in hybrid mode—coexisting with IS200CPUH1AAA (Mark VIe controller) and sharing data via IC697CMM742-LL (RX3i communication module).

VMIVME-017807-413000

Related Model Recommendations

VMIVME-7698-345/350-017698-345B: High-density analog output module—executes control commands from VMIVME-7750-834/350-027750-834 A to drive valves, VFDs, and dosing pumps.

VMIVME-017807-414001: Enhanced analog input module—provides temperature/pressure data to VMIVME-7750-834/350-027750-834 A for closed-loop control algorithms.

VMIVME-7671-421000: High-density digital I/O module—monitors/controls discrete devices (switches, solenoids) and feeds status data to the controller.

VMIVME-7807RC-420001: Redundant VME communication controller—routes VMIVME-7750-834/350-027750-834 A data to modern Mark VIe/RX3i systems via Ethernet/IP/Modbus TCP.

VMIVME-7750-666000: Predecessor VME controller—cost-effective alternative for mid-scale systems (8,192 I/O points) where the VMIVME-7750-834/350-027750-834 A’s performance is unnecessary.

IS200CPUH1AAA: Mark VIe main controller—modern counterpart to the VMIVME-7750-834/350-027750-834 A; integrated with it during phased upgrades to Mark VIe.

IC697CMM742-LL: RX3i communication module—receives data from VMIVME-7807RC-420001 (linked to the controller) for RX3i SCADA integration.

Proficy Machine Edition v9.0+: GE’s HMI/SCADA software—configures the VMIVME-7750-834/350-027750-834 A (control logic, I/O mapping) and enables hybrid-mode monitoring with Mark VIe.

VMIVME-3120: Non-redundant VME-to-Ethernet gateway—cost-effective option for non-safety-critical data transmission from the controller to legacy HMIs.

IS200PWRH1AAA: Mark VIe redundant power supply—powers VME-to-Mark VIe gateways during upgrades; complements the controller’s VME backplane power.

Installation, Commissioning and Maintenance Instructions

Installation preparation for the VMIVME-7750-834/350-027750-834 A requires a 6U VMEbus rack (VME64x compatible) with the controller mounted in the dedicated “Slot 0” (VMEbus Master slot). Tools needed include a torque screwdriver (0.8–1.2 N·m), VME64x alignment tool, Gigabit Ethernet cable tester, digital multimeter, and anti-static wristband. Verify VME backplane power (±5 V/±12 V/±15 V DC, ripple <30 mV) and ground resistance (<1 Ω); ensure the rack has forced-air cooling (airflow ≥1 m/s) to manage the controller’s 30 W max power consumption. **Note: The controller must be installed in