SIEMENS 6ES7414-4HM14-0AB0 Redundant Central Processing Unit – SIMATIC S7-400H Series
Imagine a continuous casting line at a steel mill, a water treatment plant serving a major city, or a pharmaceutical batch reactor — all running 24/7 with zero tolerance for unplanned downtime. When the central processing unit fails in a standard PLC system, the entire process halts, triggering costly emergency shutdowns, product loss, and potential safety incidents. The SIEMENS 6ES7414-4HM14-0AB0 CPU 414-4H was engineered precisely to eliminate this risk. As the core processor of the SIMATIC S7-400H high-availability system, it operates in a hot-standby redundant configuration — if one CPU encounters a fault, the partner CPU takes over in under 100 ms, completely transparent to the process.
Within the SIMATIC S7-400 family, the CPU 414-4H occupies the high-availability tier, purpose-built for fault-tolerant and safety-integrated applications. The 6ES7414-4HM14-0AB0 (firmware V6.0+) represents a mature, field-proven generation of this processor, widely deployed across global process industries including oil & gas, chemicals, power generation, and water/wastewater. Its combination of large program memory, high-speed processing, and native PROFIBUS/MPI communication makes it a benchmark for mission-critical PLC architecture worldwide.
Technical Specifications
- Order Number (SKU): 6ES7414-4HM14-0AB0
- Product Family: SIMATIC S7-400H / S7-400F/FH
- CPU Type: CPU 414-4H — Redundant Central Processing Unit
- Work Memory: 4 MB (2 MB code + 2 MB data)
- Load Memory: Integrated 512 KB RAM; expandable via Memory Card (max. 64 MB)
- Processing Speed: 0.1 µs per binary instruction
- Communication Interfaces: 1× MPI/PROFIBUS DP (max. 12 Mbit/s), 1× PROFIBUS DP Master (integrated), 2× Sync submodule slots for H-sync fiber-optic coupling
- Max. I/O Addresses: 16 KB inputs / 16 KB outputs
- Counters / Timers: 2048 / 2048
- Redundancy Mode: Hot-standby (1-of-2 architecture), switchover <100 ms
- Supply Voltage: 24 V DC (via backplane bus)
- Operating Temperature: 0 °C to +60 °C
- Dimensions (W×H×D): 50 × 290 × 219 mm
- Weight: approx. 980 g
- Certifications: CE, UL, cULus, ATEX (zone 2), IECEx
Key Features & Benefits
- True Hot-Standby Redundancy: Dual-CPU architecture with fiber-optic sync ensures bumpless switchover — no process interruption during CPU fault or planned maintenance.
- Large Program Memory: 4 MB work memory supports complex, multi-loop control programs typical of large process plants.
- Integrated Safety (F/FH): Compatible with SIMATIC S7-400F/FH safety configurations for SIL 2/3 applications per IEC 61508.
- PROFIBUS DP Master: Native high-speed fieldbus integration for distributed I/O, drives, and intelligent field devices.
- Online Change Capability: Program modifications can be downloaded without stopping the process (STOP-free programming).
- Proven Longevity: Long-term availability and backward compatibility within the S7-400 ecosystem protect your automation investment.
- Diagnostic Transparency: Comprehensive system diagnostics via STEP 7 / TIA Portal for rapid fault identification.
Industry & Equipment Applications
- Oil & Gas: Pipeline SCADA, compressor control, offshore platform automation
- Chemical & Petrochemical: Continuous reactor control, distillation column management, batch processing
- Power Generation: Turbine control systems, substation automation, grid-tie protection
- Water & Wastewater: Pumping station control, treatment plant automation, SCADA integration
- Pharmaceutical: FDA-compliant batch control, clean-room HVAC, CIP/SIP systems
- Steel & Metals: Continuous casting, rolling mill drives, furnace control
- Automotive: Body shop welding lines, paint shop conveyors, press shop automation
System Integration & Compatible Parts
The 6ES7414-4HM14-0AB0 is designed to operate within the SIMATIC S7-400H rack system. Key compatible components include:
- Sync Modules: 6ES7960-1AA04-0XA0 (fiber-optic sync submodule) for H-system coupling
- Power Supplies: 6ES7407-0DA02-0AA0 (PS 407 4A), 6ES7407-0KA02-0AA0 (PS 407 10A)
- Racks: 6ES7400-1JA01-0AA0 (UR2-H redundant rack)
- Memory Cards: 6ES7952-1KK00-0AA0 (64 MB Flash Card)
- ET 200 Distributed I/O: 6ES7153-2BA02-0XB0 (IM 153-2 for PROFIBUS DP)
- Programming Software: STEP 7 V5.6 SP2+ or TIA Portal V15.1+ with S7-400H library
Our Quality Assurance Process
At Konmask.com, every SIEMENS module undergoes a rigorous multi-stage inspection before shipment:
- ✅ Visual Inspection: Housing integrity, connector condition, label authenticity check
- ✅ Functional Verification: Power-on test, firmware version confirmation, LED status check
- ✅ Authenticity Screening: Cross-referenced against SIEMENS authorized distributor documentation
- ✅ Packaging: Anti-static ESD bag + foam-lined export carton for safe international shipping
- ✅ Documentation: Certificate of conformity and test report available on request
How to Order
- Submit your inquiry via the Contact / RFQ form on this page with your required quantity and delivery timeline.
- Our technical team will confirm availability, lead time, and provide a formal quotation within 24 hours.
- Upon order confirmation, we arrange secure packaging and international express shipping (DHL / FedEx / UPS).
- Tracking number and shipping documents (commercial invoice, packing list, COO) provided upon dispatch.
Why Choose Konmask.com?
- 🌐 Global B2B Supplier specializing in industrial automation components from leading brands
- 🔍 Verified Stock — we source only from traceable supply chains with full documentation
- ⚡ Fast Response — RFQ replies within 24 hours, urgent orders prioritized
- 📦 Secure Export Packaging — ESD-safe, shock-resistant, compliant with international shipping standards
- 🤝 Technical Support — our engineers can assist with compatibility, configuration, and integration questions
- 🔄 Flexible MOQ — single units to bulk orders, OEM and MRO procurement welcome
Frequently Asked Questions
- Q: Is the 6ES7414-4HM14-0AB0 compatible with TIA Portal?
- A: Yes. The CPU 414-4H can be programmed and configured using TIA Portal V15.1 or later with the S7-400H support package, in addition to the classic STEP 7 V5.6 environment.
- Q: What is the difference between 6ES7414-4HM14-0AB0 and 6ES7414-4HJ00-0AB0?
- A: The HM14 variant is a later hardware revision with expanded work memory (4 MB vs. 2 MB) and improved firmware support, offering better performance for large-scale redundant applications.
- Q: Can this CPU be used in a non-redundant (standard) S7-400 configuration?
- A: The CPU 414-4H is optimized for H-system redundant operation. While it can technically operate standalone, it is not cost-effective for non-redundant applications — the CPU 414-3 PN/DP would be more appropriate.
- Q: What fiber-optic sync cable is required for the H-system?
- A: The sync submodule 6ES7960-1AA04-0XA0 uses standard 1 mm plastic optical fiber (POF). Maximum sync cable length is 10 m for POF or up to 10 km with glass fiber variants.
- Q: Do you provide warranty for this module?
- A: Yes. We offer a 90-day functional warranty on all modules. Extended warranty options are available — please inquire when submitting your RFQ.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
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