Description
1. Unboxing & Physical Snapshot (Dynamic List)
- Model & Brand: Siemens 6ES5318-8MA12 (SIMATIC S5 Interface Module)
- Physical Dimensions: Approximately 135mm x 110mm x 40mm (W x H x D)
- Estimated Shipping Weight: 0.9 kg (boxed with molded static-dissipative foam)
- What’s in the Box: 1x 6ES5318-8MA12 module sealed inside an original metal-out anti-static ESD shielding bag, pluggable front terminal connectors, locking retention screws, and OEM compliance documentation.
2. Product Introduction (Structure B: Architecture Hook)
Linking legacy decentralized peripherals back to central S5 rack infrastructure requires specialized interface adapters designed for strict backplane communication protocols. The hardware mounts securely onto standard DIN rails or dedicated ET 200U mounting frames, locking into place via sliding retention clips that absorb continuous mechanical shock.
(We always inspect the gold-plated multi-pin edge connectors for oxidation prior to rack insertion.) Internal transceiver circuits translate high-speed serial data streams without introducing timing jitter or bus contention across the remote node network.
3. Core Technical Specifications
| Parameter | Value |
| Operating Voltage | 24V DC nominal (tolerance 20.4V to 28.8V DC) |
| Current Consumption | Max 450 mA from backplane power supply |
| Power Dissipation | 4.8 W under full communication load |
| Communication Protocol | SINEC L1 / RS-485 remote bus interface |
| Transmission Rate | Up to 187.5 kbit/s across distributed lines |
| Isolation Voltage | 500V DC galvanic isolation to field interface |
| Operating Temperature | 0°C to +60°C (natural convection cooling) |
| Storage Temperature | -40°C to +70°C |
| Enclosure Protection | IP20 rating per IEC 60529 |
4. Global Compliance & Industry Certifications
Auditors demand verifiable documentation confirming that legacy components comply with rigorous electrical safety mandates before plants resume operation.
- Expected Certifications: CE Mark, UL/cUL Listed (Industrial Control Equipment), CSA certification, and VDE conformity.
- Compliance Significance: UL listings verify that internal electrical spacing and insulating materials prevent dielectric breakdown under surge conditions. (Class I Div 2 ratings ensure zero risk of spark ignition within classified hazardous plant sectors.) 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. Protect this asset using these maintenance guidelines:
- Keep the interface module sealed tightly inside its original metal-out anti-static (ESD) shielding bag to block atmospheric moisture and static discharge.
- Maintain warehouse relative humidity strictly below 60% to prevent oxidation on the gold-plated edge connector fingers and terminal block screws.
- Lay the unit flat on static-dissipative foam pads to absorb structural building vibrations and prevent micro-fractures in the printed circuit board.
6. Physical Installation Prerequisites
Proper mechanical placement guarantees longevity and prevents localized overheating inside the cabinet enclosure.
- Convection Clearance: Leave at least 50mm of open space above and below the module housing to permit proper vertical airflow.
- Grounding Protocol: Bond the integrated ground terminal directly to the DIN rail or backplane grounding stud using a star lock washer to suppress high-frequency electromagnetic noise.
7. Buyer’s FAQ (Logistics & Compliance Focus)
Q: Which Harmonized System (HS) code applies to international customs clearance for the 6ES5318-8MA12?
A: This interface module typically clears under HS code 8538.90, but importers should confirm final classification with their broker according to local destination rules.
Q: Does this surplus unit come with factory firmware pre-installed?
A: New surplus hardware ships with the revision level burned onto the original ROM chips; check your project engineering database to verify compatibility with existing S5 racks.
Q: How does the declared Country of Origin (COO) influence international shipping paperwork?
A: The COO—typically Germany for this manufacturing run—governs preferential duty rates under international trade treaties, making a verified certificate of origin essential for smooth customs clearance.
Q: What level of shipping insurance should be secured for transit?
A: Insure shipments for full replacement value, as legacy automation components are difficult to source quickly if freight damage occurs.
