SIEMENS 6DD1681-0AH2 Interface Module – SIMADYN D Series
When a critical interface module fails in a SIMADYN D control system, the entire drive or process control loop can come to an immediate halt — costing manufacturers thousands of dollars per hour in unplanned downtime. The SIEMENS 6DD1681-0AH2 (also referenced as 6DD1681-OAH2) is the precision-engineered interface module that keeps communication pathways alive between the SIMADYN D processor boards and peripheral I/O or drive components. Without it, signal integrity collapses and safe, coordinated machine operation becomes impossible.
Within the SIMADYN D modular control platform — Siemens’ high-performance digital controller widely deployed in heavy industry, power generation, and large-scale drive systems — the 6DD1681-0AH2 occupies a pivotal role as a dedicated interface carrier. It is engineered to exacting Siemens quality standards and remains one of the most sought-after spare and replacement modules for legacy SIMADYN D installations worldwide, where system continuity and backward compatibility are non-negotiable.
Technical Specifications
- Manufacturer: Siemens AG
- Part Number: 6DD1681-0AH2
- Alternate Reference: 6DD1681-OAH2 (O/0 variant notation)
- Product Family: SIMADYN D
- Module Type: Interface Module
- Form Factor: Plug-in board for SIMADYN D rack/subrack
- Weight: Approx. 1,250 g (packaged)
- Condition Available: New / Refurbished / Tested Used
Note: Detailed electrical specifications (voltage, current ratings, connector pinout) should be verified against the official Siemens SIMADYN D hardware documentation or contact our technical team for datasheet support.
Key Features & Benefits
- Seamless SIMADYN D Integration: Designed as a native component of the SIMADYN D architecture, ensuring plug-and-play compatibility with existing racks and backplanes.
- Signal Integrity: Maintains reliable, noise-immune communication between processor and I/O layers in demanding industrial environments.
- Long-Term Availability: Konmask.com maintains stock of legacy Siemens modules to support plants running SIMADYN D systems beyond standard product lifecycle.
- Dual Part Number Support: Covers both 6DD1681-0AH2 and 6DD1681-OAH2 notations, eliminating procurement confusion.
- Tested Before Dispatch: All refurbished units undergo functional verification prior to shipment.
Industry & Equipment Applications
- Power Generation: Turbine and generator excitation control systems using SIMADYN D platforms.
- Steel & Metals: Rolling mill drive control, where SIMADYN D coordinates multi-axis synchronization.
- Cement & Mining: Kiln drive and conveyor systems with legacy Siemens digital controllers.
- Marine & Offshore: Propulsion and thruster control systems built on SIMADYN D architecture.
- Chemical & Process Industry: Continuous process control loops requiring high-reliability interface hardware.
System Integration & Compatible Parts
The 6DD1681-0AH2 is designed for use within the SIMADYN D control system family. Compatible and commonly co-ordered components include:
- SIMADYN D Processor Boards (e.g., 6DD1600 series)
- SIMADYN D I/O Modules (6DD1681 series variants)
- SIMADYN D Subrack / Rack assemblies
- Siemens SIMOREG DC Master drives (where SIMADYN D is used as the controller)
- Siemens MASTERDRIVES series with SIMADYN D interface
Contact our technical team to confirm compatibility with your specific system configuration before ordering.
Our Quality Assurance Process
- Visual Inspection: All modules are inspected for physical damage, corrosion, and component integrity upon receipt.
- Functional Testing: Refurbished units are bench-tested using SIMADYN D-compatible test rigs to verify communication and signal performance.
- ESD-Safe Packaging: Shipped in anti-static bags with foam cushioning to prevent transit damage.
- Traceability: Each unit is logged with inspection records available upon request.
- Warranty: 90-day replacement warranty on all tested/refurbished units. New OEM units carry standard Siemens warranty terms.
How to Order
- Submit an inquiry via the “Request a Quote” button on this page.
- Provide your required quantity, preferred condition (new/refurbished), and any urgency requirements.
- Our team will respond within 24 business hours with availability, lead time, and pricing.
- Upon confirmation, we issue a proforma invoice and arrange secure international shipping (DHL, FedEx, UPS, or sea freight).
For urgent requirements, contact us directly: support@konmask.com | +0086 19859288691
Why Choose Konmask.com?
- ✅ Specialist in Industrial Automation Spares: Focused exclusively on PLC, DCS, and drive components from leading brands including Siemens, ABB, Rockwell, and Schneider.
- ✅ Global B2B Shipping: Serving MRO buyers, system integrators, and OEMs across 60+ countries.
- ✅ Legacy Module Expertise: Deep inventory of discontinued and hard-to-find Siemens SIMADYN D components.
- ✅ Technical Support: Pre-sales engineering consultation to confirm compatibility and application fit.
- ✅ Secure Transactions: T/T, PayPal, and trade assurance payment options available.
Frequently Asked Questions
- Q: Is 6DD1681-0AH2 the same as 6DD1681-OAH2?
- A: Yes. The difference is only in notation — the character after “168” is the digit zero (0) in the official Siemens part number 6DD1681-0AH2. The “O” variant (6DD1681-OAH2) is a common typographical alternate used in procurement documents. Both refer to the identical module.
- Q: Is this module still in production by Siemens?
- A: The SIMADYN D product line has reached end-of-life status with Siemens. Konmask.com specializes in sourcing genuine new-old-stock and professionally refurbished units to support ongoing plant operations.
- Q: Can I use this module in a SIMATIC S7 or S5 system?
- A: No. The 6DD1681-0AH2 is specific to the SIMADYN D platform and is not compatible with SIMATIC S7, S5, or TIA Portal-based systems.
- Q: What is the lead time for delivery?
- A: In-stock units typically ship within 1–3 business days. Lead time for sourced units is 5–15 business days depending on origin. Express air freight is available.
- Q: Do you provide a certificate of conformity or test report?
- A: Yes, test reports and inspection certificates are available for refurbished units upon request at time of order.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
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