Mitsubishi A68AD 8-Channel Analog Input Local Unit Module – MELSEC-A Series
Imagine a critical production line where temperature, pressure, and flow sensors are feeding real-time data into your control system — and suddenly the analog input module fails. Without a reliable analog-to-digital conversion unit, your PLC becomes blind to the physical world. Process variables go unmonitored, alarms go undetected, and unplanned downtime cascades into costly production losses. The Mitsubishi A68AD is the precision interface that keeps your MELSEC-A Series PLC fully aware of every analog signal in your plant.
The A68AD is an 8-channel analog input local unit module engineered for the Mitsubishi MELSEC-A Series programmable logic controller platform — one of the most widely deployed PLC families in global industrial automation history. Designed for high-density signal acquisition in demanding environments, the A68AD occupies a well-established position in process control, machine automation, and factory monitoring applications across Asia, Europe, and the Americas. Its proven architecture continues to support legacy and hybrid automation systems worldwide.
Technical Specifications
- Model: A68AD
- Series: MELSEC-A Series
- Manufacturer: Mitsubishi Electric
- Module Type: Analog Input Local Unit Module
- Number of Channels: 8 channels
- Signal Type: Voltage / Current analog input
- Mounting: Local unit (direct base mounting)
- Compatible Base: MELSEC-A Series main base / extension base
- Weight: Approx. 1,210 g
Note: Detailed electrical specifications (input range, resolution, conversion speed) should be verified against the official Mitsubishi Electric A68AD hardware manual. Konmask.com does not fabricate or assume undocumented parameters.
Key Features & Benefits
- 8-Channel Simultaneous Acquisition: Monitor up to 8 independent analog signals in a single module slot, maximizing I/O density and reducing panel space requirements.
- High-Precision A/D Conversion: Delivers accurate digital representation of analog process variables, essential for tight process control loops.
- Seamless MELSEC-A Integration: Plug-and-play compatibility with the MELSEC-A Series base units — no additional interface hardware required.
- Robust Industrial Design: Built to withstand the electrical noise, vibration, and temperature variations typical of factory floor environments.
- Legacy System Support: Enables continued operation and expansion of existing MELSEC-A installations without full system replacement.
- Flexible Signal Handling: Supports both voltage and current input modes, accommodating a wide range of field sensors and transmitters.
Industry & Equipment Applications
- Process Manufacturing: Chemical plants, pharmaceutical production, food & beverage processing — anywhere continuous analog monitoring is critical.
- Automotive Assembly: Torque monitoring, pressure sensing, and temperature control on automated assembly lines.
- Water & Wastewater Treatment: Flow rate, pH, and level measurement in municipal and industrial water systems.
- Power Generation & Utilities: Analog signal acquisition for turbine control, boiler management, and substation automation.
- Semiconductor & Electronics Manufacturing: Precision process variable monitoring in cleanroom environments.
- Building Automation & HVAC: Temperature and pressure monitoring integrated into legacy MELSEC-A control systems.
System Integration & Compatible Parts
The A68AD is designed to operate within the Mitsubishi MELSEC-A Series ecosystem. Compatible and commonly paired components include:
- MELSEC-A Series CPU modules (e.g., A2UCPU, A3UCPU, A1SCPU)
- MELSEC-A Series main base units (e.g., A38B, A35B)
- MELSEC-A Series extension base units
- Analog output modules (e.g., A62DA, A68DAV, A68DAI)
- Power supply modules (e.g., A61P, A62P)
- GX Developer / GX Works2 programming software for parameter configuration
Contact our technical team at support@konmask.com for compatibility verification with your specific system configuration.
Our Quality Assurance Process
At Konmask.com, every Mitsubishi A68AD module undergoes a rigorous sourcing and inspection process before shipment:
- Authentic Sourcing: Modules are procured through verified supply channels with full traceability documentation.
- Visual Inspection: Each unit is inspected for physical integrity — PCB condition, connector pins, labeling, and housing.
- Functional Verification: Where applicable, modules are tested for basic operational readiness prior to dispatch.
- Secure Packaging: Anti-static packaging with shock-absorbing materials ensures safe transit to your facility.
- Documentation: Shipments include relevant product documentation and test records upon request.
How to Order
- Submit your inquiry via the Contact / RFQ form on this page or email support@konmask.com.
- Provide your required quantity, delivery timeline, and destination country.
- Our team will respond within 1 business day with availability confirmation and a formal quotation.
- Upon order confirmation, we arrange secure packaging and international shipping with full tracking.
- Post-delivery technical support is available for integration and commissioning questions.
Why Choose Konmask.com?
- Industrial Automation Specialists: We focus exclusively on PLC, DCS, and industrial control components — not a generalist marketplace.
- Global B2B Supply: Serving engineering teams, system integrators, and MRO procurement departments worldwide.
- Fast Inquiry Response: Dedicated technical sales team responds within 24 hours on business days.
- Competitive Pricing: Direct sourcing relationships enable competitive pricing on both single units and bulk orders.
- Reliable Logistics: Experienced in international export compliance, customs documentation, and secure freight for industrial electronics.
- Long-Term Partnership: We support your projects from initial sourcing through to ongoing maintenance supply.
Frequently Asked Questions
- Q: Is the Mitsubishi A68AD still in production?
- A: The MELSEC-A Series has been superseded by newer Mitsubishi PLC platforms. However, the A68AD remains available as a genuine spare part for maintenance and system expansion. Contact us for current stock availability.
- Q: Can the A68AD be used with MELSEC-Q or iQ-R Series systems?
- A: No. The A68AD is designed exclusively for the MELSEC-A Series base architecture and is not directly compatible with Q Series or iQ-R Series systems. Migration adapters may exist — consult Mitsubishi Electric documentation or contact our team.
- Q: What input signal types does the A68AD support?
- A: The A68AD supports both voltage and current analog input signals. Please refer to the official Mitsubishi A68AD hardware manual for exact input range specifications and channel configuration details.
- Q: Do you provide a warranty on the A68AD?
- A: Yes. Konmask.com provides a quality guarantee on all supplied modules. Specific warranty terms are confirmed at the time of order. Contact us for details.
- Q: Can you supply multiple units for a large maintenance project?
- A: Absolutely. We handle both single-unit and bulk procurement requests. Submit your RFQ with quantity requirements and we will provide a tailored quotation.
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