Description
1. Unboxing & Physical Snapshot (Dynamic List)
- Model & Brand: Siemens 6ES7412-2XJ05-0AB0 (SIMATIC S7-400 CPU 412-2 Central Processing Unit)
- Physical Dimensions: Approximately 25mm x 290mm x 220mm (W x H x D — standard single-width S7-400 format)
- Estimated Shipping Weight: 0.8 kg (boxed with molded static-dissipative foam cushioning)
- What’s in the Box: 1x 6ES7412-2XJ05-0AB0 CPU module sealed inside an original metal-out anti-static ESD shielding bag, backup battery compartment cover, mode selector key, and original OEM compliance documentation.
2. Product Introduction (Structure B: Architecture Hook)
Mounting directly into the master rack backplane of SIMATIC S7-400 high-performance automation systems, this central processing unit coordinates complex plant-level control logic and data logging. The rugged metal-fronted module slides smoothly along precision guide rails before the multi-pin DIN connectors engage firmly into the backplane bus sockets.
(We always inspect the backplane bus connector pins for oxidation or bending before sliding the CPU home to prevent system startup faults.) Integrated MPI/DP and PROFIBUS interfaces bridge controller architecture directly with distributed field devices and supervisory operator stations.
3. Core Technical Specifications
| Parameter | Value |
| Processor Type | CPU 412-2 Central Processing Unit for SIMATIC S7-400 |
| Work Memory | 512 KB total (256 KB for code, 256 KB for data) |
| Backplane Power Draw | Max 1.5 A from 5V DC backplane supply |
| Power Dissipation | 4.5 W under nominal operating load |
| Communication Interfaces | MPI / PROFIBUS DP master/slave interface (up to 12 Mbit/s) |
| Execution Speed | High-performance bit/word processing for rigorous automation tasks |
| Operating Temperature | 0°C to +60°C (natural convection cooling) |
| Storage Temperature | -40°C to +70°C |
| Mounting Standard | Dedicated CPU slot in SIMATIC S7-400 central subrack |
4. Global Compliance & Industry Certifications
Auditors demand verifiable documentation confirming that high-capacity automation controllers comply with rigorous electrical and functional safety mandates before plants resume operation.
- Expected Certifications: CE Mark, UL/cUL Listed (Industrial Control Equipment), CSA certification, and FM Class I Div 2 hazardous location ratings.
- Compliance Significance: UL listings verify that internal multi-layer board spacing and insulating materials prevent dielectric breakdown under transient power surges. (Class I Div 2 ratings ensure safe deployment within volatile plant sectors containing flammable gases or vapors.) Verify specific lot certifications with OEM documentation before closing out compliance audits.
5. Long-Term Storage & Asset Preservation Guide
Warehouse storage destroys unprotected electronics if humidity and electrostatic hazards go unmanaged. Keep this asset safe:
- Store the CPU module sealed tightly inside its original metal-out anti-static (ESD) shielding bag to block atmospheric moisture and static discharge from damaging sensitive microchips.
- Maintain warehouse relative humidity strictly below 60% to prevent micro-corrosion on the high-density backplane connector pins and communication ports.
- Disconnect or remove the backup lithium battery if prolonged storage exceeds twelve months to prevent electrolyte leakage from damaging circuit traces.
6. Physical Installation Prerequisites
Proper mechanical placement guarantees longevity and prevents localized overheating inside the heavy-duty cabinet enclosure.
- Convection Clearance: Leave at least 60mm of open space above and below the CPU chassis to permit proper vertical airflow across the ventilation slots.
- Grounding Protocol: Bond the subrack profile rail and integrated shielding ground bar securely to the cabinet backplane grounding busbar using star lock washers to suppress electromagnetic interference (EMI).
7. Buyer’s FAQ (Logistics & Compliance Focus)
Q: Which Harmonized System (HS) code applies to international customs clearance for the 6ES7412-2XJ05-0AB0?
A: This central processing unit typically clears under HS code 8537.10 (Programmable controllers) or 8538.90, but importers should confirm final classification with their broker according to local rules.
Q: Does this surplus unit come with a memory card or pre-loaded system firmware?
A: New surplus hardware ships with standard factory system firmware; S7-400 configurations often utilize internal RAM with battery backup or pluggable Micro Memory Cards (MMCs) depending on the rack setup. Check your engineering requirements prior to deployment.
Q: How does the declared Country of Origin (COO) influence international shipping paperwork?
A: The COO—typically Germany for this manufacturing run—dictates preferential duty rates under international trade agreements, making a verified certificate of origin essential for seamless customs processing.
