Siemens 6ES7417-4XT05-0AB0 CPU 417-4H Central Processing Unit – SIMATIC S7-400H
Imagine a continuous casting line at a steel mill, a pharmaceutical batch reactor, or a water treatment plant running at full capacity — then picture the PLC CPU failing without a redundant backup. The result: unplanned downtime, product loss, safety incidents, and regulatory exposure that can cost hundreds of thousands of dollars per hour. The Siemens 6ES7417-4XT05-0AB0 exists precisely to eliminate that scenario. As the central processing unit of the SIMATIC S7-400H fault-tolerant system, it keeps your process running even when one CPU encounters a fault — seamlessly, automatically, and without operator intervention.
The 6ES7417-4XT05-0AB0 is the flagship CPU of the S7-400H series — Siemens’ dedicated high-availability PLC platform engineered for processes where stopping is not an option. Within the global industrial automation market, the S7-400H is the benchmark for redundant PLC architecture, deployed across oil & gas, power generation, chemical processing, and critical infrastructure on every continent. This specific order number (0AB0) represents the fifth-generation hardware revision, incorporating enhanced synchronization performance and expanded memory capacity over its predecessors.
Technical Specifications
- Order Number: 6ES7417-4XT05-0AB0
- Series: SIMATIC S7-400H (High-Availability / Fault-Tolerant)
- CPU Type: CPU 417-4H
- Manufacturer: Siemens AG
- Weight: 1,210 g (approx.)
- Operating Mode: Redundant (H-System, paired with second CPU 417-4H)
- Work Memory: 30 MB (program) / 20 MB (data) — refer to official Siemens datasheet for confirmed values
- Interfaces: MPI/DP integrated; supports PROFIBUS DP master/slave
- Synchronization: Fiber-optic sync cable between redundant CPUs
- Power Supply: Via S7-400 rack backplane (PS 407 / PS 405 compatible)
- Programming Software: STEP 7 V5.x / TIA Portal (with S7-400H support package)
- Certifications: CE, UL, cULus, ATEX (zone-dependent configurations)
Note: Always verify specifications against the official Siemens Industry Mall datasheet before engineering design. Konmask.com supplies genuine hardware; we do not alter factory specifications.
Key Features & Benefits
- True Hardware Redundancy: Two synchronized CPUs operate in parallel — if one fails, the other takes over with zero process interruption (bumpless switchover).
- High Memory Capacity: Supports large, complex programs typical of continuous process industries.
- PROFIBUS DP Integration: Native DP master interface enables direct connection to distributed I/O, drives, and field devices without additional communication modules.
- Hot Standby Architecture: Both CPUs execute the same program simultaneously; synchronization is handled automatically via fiber-optic link.
- Proven Platform Longevity: S7-400H has been in production for over two decades, with a large installed base and extensive spare parts ecosystem.
- Scalable Rack Configuration: Compatible with the full S7-400 modular rack system — mix I/O, communication, and function modules as required.
Industry & Equipment Applications
- Oil & Gas: Pipeline SCADA, compressor control, wellhead automation, LNG terminal management
- Power Generation: Turbine control, boiler management systems, substation automation
- Chemical & Petrochemical: Continuous reactor control, distillation column management, SIL-rated safety loops
- Water & Wastewater: Pumping station control, treatment plant automation, flood management systems
- Pharmaceutical & Food: Batch process control requiring 21 CFR Part 11 / GMP compliance
- Steel & Metals: Continuous casting, rolling mill drives, furnace temperature control
- Mining: Conveyor systems, crusher control, ventilation management
System Integration & Compatible Parts
The 6ES7417-4XT05-0AB0 is designed to operate within the SIMATIC S7-400H system. Key compatible components include:
- Sync Modules: 6ES7960-1AA04-0XA0 (fiber-optic synchronization cable set)
- Power Supplies: 6ES7407-0KA02-0AA0 (PS 407 10A), 6ES7405-0KA02-0AA0 (PS 405 4A)
- Racks: 6ES7400-1JA01-0AA0 (UR2-H redundant rack)
- Communication Modules: CP 443-1 (Ethernet), CP 443-5 (PROFIBUS)
- Programming: STEP 7 Professional V5.6 or TIA Portal V16+ with S7-400H option
Contact our technical team to verify compatibility with your existing S7-400H configuration before ordering.
Our Quality Assurance Process
- Source Verification: All units are sourced from authorized distributors or directly from Siemens-certified supply chains.
- Visual & Functional Inspection: Each module undergoes physical inspection for label authenticity, connector integrity, and firmware version verification.
- Anti-Counterfeit Checks: Hologram labels, serial number traceability, and packaging integrity are verified against Siemens standards.
- Secure Packaging: ESD-safe packaging with moisture barrier bags and shock-absorbing foam for international shipping.
- Documentation: Certificate of conformity and traceability documentation available upon request.
How to Order
- Submit your inquiry via the Contact / Request a Quote button on this page.
- Provide your required quantity, delivery timeline, and destination country.
- 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 / sea freight).
- Full documentation (packing list, commercial invoice, COC) provided for customs clearance.
Why Choose Konmask.com?
- ✅ Specialized in Industrial Automation: 100% focus on PLC, DCS, HMI, and drives — not a general electronics marketplace.
- ✅ Global B2B Export Experience: Serving engineering firms, system integrators, and MRO buyers in 50+ countries.
- ✅ Genuine Parts Guarantee: We stand behind the authenticity of every part we supply.
- ✅ Technical Pre-Sales Support: Our engineers can assist with compatibility checks and system configuration questions.
- ✅ Flexible Logistics: Express courier, air freight, and sea freight options to match your urgency and budget.
Frequently Asked Questions
Q: Is the 6ES7417-4XT05-0AB0 compatible with the older 6ES7417-4XT05-0AB0 revision?
A: The 0AB0 suffix denotes the hardware revision. Siemens generally maintains backward compatibility within the same CPU family, but always verify with your STEP 7 or TIA Portal project requirements before substituting revisions.
Q: Can this CPU be used in a non-redundant (standard) S7-400 configuration?
A: The CPU 417-4H is specifically designed for H-system (redundant) operation. While it may function in a standard rack, its full feature set and value are realized only in a paired redundant configuration.
Q: What is the typical lead time for this part?
A: Lead time varies by stock availability. Contact us for a real-time availability check. Express delivery (3–7 business days internationally) is available for in-stock units.
Q: Do you provide a warranty?
A: Yes. We offer a standard warranty on all supplied parts. Terms are confirmed at the time of quotation based on part condition (new, refurbished, or tested used).
Q: Can you supply the complete S7-400H redundant system (both CPUs + rack + sync cables)?
A: Yes. We can source complete H-system configurations. Please submit a full BOM (Bill of Materials) inquiry for a consolidated quotation.
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