1. Product Overview

2. Core Technical Specifications

1. Mechanical & Bus Parameters

• Form Factor: Standard 6U VME industrial chassis

• Backplane Standard: VME64, thick gold-plated multi-slot connectors

• Compatible Hardware: All Mark VI/VIe single/dual-slot VME boards and PMC communication expansion cards

• Material: Reinforced aluminum alloy frame, galvanized anti-rust outer shell, full EMI shielding structure

2. Redundant Power Configuration (Core Upgrade Feature)

• Built-in dual independent DC power supply modules for redundant backup

• Automatic seamless load switchover between two power branches

• Independent overvoltage, overcurrent, short-circuit and reverse polarity protection for each power unit

• Power status LED indicators for each power module

3. Enhanced Cooling & Monitoring System

• Low-noise high-flow DC fan array with operation indicator light

• Double-layer detachable dust filter at air intake for easy cleaning

• Multi-point internal temperature sensors, collective over-temperature dry-contact alarm output

4. Environmental & Safety Ratings

• Operating Temperature: 0℃ ~ +60℃

• Storage Temperature: -30℃ ~ +70℃

• Relative Humidity: 10%–95% RH, non-condensing

• Hazardous Location Certification: Class I Division 2

• Protection Grade: IP20, only installed inside sealed industrial control cabinet

5. Installation Method

• Dual mounting modes: Cabinet embedded guide rail installation, independent floor stand mounting

• Rear reserved wire-through holes with rubber anti-abrasion sealing rings and chassis grounding lug

6. Warranty: 12-month full factory warranty for brand-new VME-6500-110000 chassis

3. Chassis Internal & External Structure Description

1. Front Panel Area

• VME card slot openings with locking screw reserved positions for each module

• Dual power module status LEDs, fan running indicator, over-temperature alarm terminal block

• Quick-release transparent lockable front door, convenient for module maintenance and filter disassembly

2. Rear Panel Area

• Dual external DC power input terminal blocks for two redundant power branches with clear polarity marking

• Large cable routing holes equipped with rubber sealing rings

• Dry-contact alarm output terminals for temperature and power fault signals

• Dedicated chassis shielding grounding lug

3. Internal Layout

4. Bottom area: Two independent built-in redundant DC power supply modules with separate heat sinks

5. Middle area: Central VME64 gold-plated backplane for all control modules

6. Side area: High-flow fan assembly and widened directional air ducts

7. Partition design: Metal shielding plates separate power zone, signal bus zone and cooling zone to suppress interference

8. Air inlet: Removable double-layer dust filter cotton for dust blocking

9. Standard Matching Accessories

   Module fixing screws, cable binding brackets, spare filter cotton, chassis grounding wire

4. Standard Installation Operating Procedures

1. Connect two groups of independent DC power cables to rear dual power input terminals respectively, strictly distinguish positive and negative polarities and fasten all terminal screws;

2. Lead all external signal cables out through rear wire-through holes and install rubber sealing rings to prevent dust and moisture entering;

3. Connect power fault and over-temperature alarm signal cables to rear dry-contact alarm terminals and link to turbine upper monitoring HMI.

   Step 4 Module Insertion Sequence

4. Install high heat generation hardware (UCVD main control boards, S200 DSP servo boards) into middle slots close to cooling air ducts for priority heat dissipation;

5. Insert analog input, relay output, servo termination and PMC communication boards into remaining slots one by one, tighten front panel locking screws of every module;

6. Reserve 1~2 empty slots as spare maintenance positions for future hardware expansion.

   Step 5 Pre-Power-On Comprehensive Inspection

   Check dual power input terminals without short-circuit risk; confirm all VME modules are fully inserted into backplane slots; double-layer dust filter is installed intact without blockage; clean all metal debris inside the chassis before power supply energization.

   Step 6 Power-On Commissioning & Acceptance

   Switch on two groups of external DC power supply simultaneously. Verify two power module LEDs stay steady on, cooling fans rotate normally without over-temperature alarm output. Simulate single power branch power-off to test automatic redundant switchover function; all control modules keep continuous normal communication without data interruption. Complete installation acceptance after chassis internal temperature remains stable under long-term full-load operation.

5. Daily Operation & Regular Maintenance Standards

1. Normal Operation Judgment Standard

   Dual power module indicators keep solid green; cooling fans run smoothly without abnormal noise; no over-temperature or power fault alarm output; all VME modules maintain stable bus communication without signal loss or jitter.

2. Regular Inspection Checklist

• Shift Inspection: Check dual power status LEDs, fan running indicator and alarm signal output status;

• Monthly Maintenance: Disassemble double-layer dust filter cotton and blow dust with dry compressed air blower; inspect fan rotation smoothness and power module heat sink dust accumulation;

• Quarterly Inspection: Retighten rear dual power and signal wiring terminals, clean oxidation and dust on VME backplane gold-plated slots, check integrity of shielding partitions and chassis anti-corrosion coating.

3. Environmental Maintenance

   Keep outer control cabinet fully sealed with continuous dehumidifier operation; isolate corrosive gas, conductive metal dust and water vapor from chassis interior to extend service life of power modules and backplane.

6. Common Fault Diagnosis & Troubleshooting

7. Mandatory Safety Operation Precautions

1. Cut off both groups of external DC power supply before opening front door, replacing modules or performing internal maintenance, to avoid electric shock hazard and VME bus short-circuit damage.

2. Only original matched GE VME control modules and certified shielded signal cables are allowed for internal installation and wiring; non-standard uncertified accessories will cause communication failure and void factory warranty.

3. Immediately shut down turbine control system and cut off dual power supply if continuous over-temperature alarm cannot be eliminated; long-term high internal temperature will permanently burn out power modules, CPU, DSP and I/O circuit boards.

4. Unauthorized disassembly of chassis metal shielding frame, built-in power modules and internal VME backplane components is strictly prohibited; hardware damage caused by private disassembly is not covered under warranty terms.

5. Use shockproof, dust-proof anti-static packaging during transportation and storage; avoid heavy collision and extrusion to prevent backplane connector deformation and power module internal component damage.

6. This chassis with redundant power supplies carries turbine safety critical control hardware. All module replacement, wiring and internal maintenance operations must be completed by certified GE industrial control technicians with turbine safety operation qualification.

8. Long-Term Standard Storage Requirements

Reliability Information Statement