Mitsubishi SD-1G0A-99 – High-Performance CPU Module | MELSEC-Q Series PLC Platform
Engineering Background
The Mitsubishi Electric MELSEC-Q Series represents the pinnacle of modular PLC architecture for demanding industrial environments. Designed for high-speed, high-capacity control applications, the Q Series platform has been deployed globally across automotive assembly lines, semiconductor fabs, water treatment facilities, and energy infrastructure. The SD-1G0A-99 CPU module is a core processing unit within this ecosystem, engineered to deliver deterministic scan-cycle performance and seamless integration with Mitsubishi’s extensive I/O and network module library.
Product Positioning
The SD-1G0A-99 is positioned as a precision CPU module for procurement engineers and system integrators who require a verified, specification-accurate replacement or expansion component for existing MELSEC-Q installations. At Konmask.com, we supply this module with full traceability documentation, making it the preferred sourcing choice for MRO (Maintenance, Repair & Operations) and new-build control system projects.
Complete Technical Specifications
| Part Number / SKU | SD-1G0A-99 |
| Manufacturer | Mitsubishi Electric |
| Series / Platform | MELSEC-Q Series |
| Module Type | Central Processing Unit (CPU) |
| Program Memory | 1 GB (SD Memory Card based) |
| I/O Points (Max) | Up to 4,096 I/O points (system dependent) |
| Processing Speed | High-speed instruction execution (LD instruction: 9.5 ns typical) |
| Communication Ports | USB (mini-B), Ethernet (RJ-45) — configuration dependent |
| Power Supply Voltage | 5 VDC (supplied via backplane) |
| Operating Temperature | 0 °C to +55 °C |
| Storage Temperature | -25 °C to +75 °C |
| Humidity | 5% to 95% RH (non-condensing) |
| Vibration Resistance | IEC 61131-2 compliant |
| Weight | 1,210 g |
| Certifications | CE, UL, cUL |
| Country of Origin | Japan |
Proven Application Environments
- Automotive Manufacturing: Body welding lines, paint shop conveyors, and final assembly sequencing requiring deterministic cycle times.
- Semiconductor & Electronics: Wafer handling, SMT pick-and-place coordination, and cleanroom HVAC control.
- Water & Wastewater Treatment: SCADA-integrated pump station control, dosing systems, and filtration sequencing.
- Power Generation & Utilities: Turbine auxiliary control, switchgear interlocking, and substation automation.
- Food & Beverage: Hygienic filling lines, CIP (Clean-In-Place) cycles, and batch recipe management.
- Material Handling & Logistics: Automated storage and retrieval systems (AS/RS), conveyor routing, and sortation.
Engineering Advantages
- SD Memory Card Architecture: The 1 GB SD card-based program storage enables rapid program backup, restoration, and field replacement without a programming device — critical for minimizing unplanned downtime.
- MELSEC-Q Ecosystem Compatibility: Direct compatibility with the full Q Series module library including analog I/O, high-speed counter, positioning, and CC-Link/CC-Link IE network modules.
- Deterministic Scan Performance: Sub-10 ns instruction execution ensures predictable control loop timing for motion-critical and process-critical applications.
- Redundancy-Ready: Supports hot-standby CPU redundancy configurations when paired with compatible Q Series redundant power and base units.
- GX Works2/GX Works3 Compatible: Full programming, monitoring, and diagnostic support via Mitsubishi’s standard engineering software suite.
System Architecture & Signal Flow
The SD-1G0A-99 mounts directly onto a MELSEC-Q Series base unit (Q3□B / Q6□B / Q1□B series). The CPU communicates with I/O and intelligent function modules via the high-speed Q bus backplane. Program execution follows a cyclic scan model: Input Refresh → Program Execution → Output Refresh → END processing. Network modules (CC-Link IE, MELSECNET/H, Ethernet) connect via dedicated slots and are managed through the CPU’s parameter settings. The SD memory card slot (located on the front panel) provides non-volatile program and data storage accessible during operation.
Sourcing & Quality Verification
- OEM Traceability: All units supplied by Konmask.com are sourced through verified distribution channels with manufacturer lot traceability available on request.
- Pre-Shipment Inspection: Each module undergoes visual inspection, label verification, and packaging integrity check prior to dispatch.
- Authenticity Guarantee: We do not supply counterfeit, refurbished-as-new, or grey-market components. Certificate of Conformance (CoC) available upon request.
- Warranty: 12-month limited warranty against manufacturing defects from date of shipment.
Procurement Process
- Submit RFQ: Contact us at [email protected] or via the product page with your required quantity and delivery timeline.
- Quotation & Lead Time: We respond within 1 business day with pricing, availability, and estimated lead time.
- Order Confirmation: Purchase order accepted via email. Proforma invoice issued for payment processing.
- Quality Check & Dispatch: Module inspected, packed in anti-static ESD packaging, and shipped via DHL / FedEx / UPS with full tracking.
- Post-Delivery Support: Technical support available for installation verification and commissioning queries.
Technical FAQ
Q: Is the SD-1G0A-99 a direct replacement for other Q Series CPU models?
A: Compatibility depends on the specific Q Series base unit and software version in use. Contact our engineering team with your existing system configuration for a compatibility assessment.
Q: Can this CPU be used in a redundant system?
A: Yes, the MELSEC-Q platform supports CPU redundancy. Verify that your base unit and power supply modules support the redundant configuration before ordering.
Q: What programming software is required?
A: GX Works2 or GX Works3 (Mitsubishi Electric) is required for programming, parameter configuration, and online monitoring.
Q: Do you provide export documentation for international shipments?
A: Yes. Commercial invoice, packing list, and Certificate of Origin are provided as standard. ECCN classification and export license support available on request.
Q: What is the minimum order quantity (MOQ)?
A: MOQ is 1 unit. Volume pricing available for orders of 5 units or more.
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