Description
1. Unboxing & Physical Snapshot (Dynamic List)
- Model & Brand: Siemens 6ES7318-3EL00-0AB0 (SIMATIC S7-300 CPU 319-3 PN/DP Central Processing Unit)
ADEGIS
- Physical Dimensions: Approximately 120mm x 125mm x 130mm (W x H x D)
- Estimated Shipping Weight: 0.6 kg (boxed with molded static-dissipative foam cushioning)
- What’s in the Box: 1x 6ES7318-3EL00-0AB0 CPU module sealed inside an original metal-out anti-static ESD shielding bag, front connector, bus connector, slot-in Micro Memory Card compartment door, and OEM compliance documentation.
2. Product Introduction (Structure B: Architecture Hook)
Mounting directly into the central profile rail of SIMATIC S7-300 automation racks, this high-performance central processing unit coordinates control logic across multi-tier industrial networks. The rugged enclosure slides securely along precision guide pins before the integrated backplane bus connectors engage firmly into the rack sockets.
(We always recommend checking the backplane bus connector pins for oxidation or bending before sliding the CPU home to prevent communication faults.) Integrated PROFINET and PROFIBUS DP interfaces bridge plant-level control directly with high-speed field devices and supervisory control systems.
3. Core Technical Specifications
| Parameter | Value |
|---|---|
| Processor Type | CPU 319-3 PN/DP Central Processing Unit for SIMATIC S7-300 |
| Working Memory | 1.4 MB integrated high-speed RAM |
| Interfaces | 1st Interface: MPI/DP (12 Mbit/s); 2nd Interface: PROFIBUS DP master/slave; 3rd Interface: PROFINET Ethernet (2-port switch) |
| Backplane Power Draw | Max 1.2 A from 5V DC backplane supply |
| Power Dissipation | 4.6 W under nominal operating load |
| Execution Speed | High-performance bit/word processing for complex automation tasks |
| Operating Temperature | 0°C to +60°C (natural convection cooling) |
| Storage Temperature | -40°C to +70°C |
| Mounting Standard | Standard 35mm S7-300 DIN profile rail |
4. Global Compliance & Industry Certifications
Auditors demand verifiable documentation confirming that automation processors 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 printed circuit 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.
- Lay the unit flat on static-dissipative foam pads to absorb structural building vibrations and prevent micro-fractures in the motherboard substrate.
6. Physical Installation Prerequisites
Proper mechanical placement guarantees longevity and prevents localized overheating inside the heavy-duty cabinet enclosure.
- Convection Clearance: Leave at least 40mm of open space above and below the CPU chassis to permit proper vertical airflow across the enclosure ventilation slots.
- Grounding Protocol: Bond the DIN rail and integrated shielding ground bar securely to the cabinet backplane grounding busbar using star lock washers to suppress electromagnetic interference (EMI).
Kempston Controls
7. Buyer’s FAQ (Logistics & Compliance Focus)
Q: Which Harmonized System (HS) code applies to international customs clearance for the 6ES7318-3EL00-0AB0? 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 require a Micro Memory Card (MMC) to operate? A: Yes, the S7-300 CPU 319-3 PN/DP requires a Siemens Micro Memory Card (MMC) inserted into the front slot to store the user program and configuration data; ensure an appropriate MMC is provisioned separately.
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.
