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Phone: +86 16626708626Description
Key Technical Specifications
- Manufacturer: EtherWAN Systems
- Model Family: EMC400
- Variant: EMC400-EPW (chassis); EMC400-EPWS (chassis + 2× HDR-30-12 PSUs)
- Slots: 4 hot-swappable module bays
- Supported Modules: EtherWAN EL2321, EL2211, EL2315, EM1000/EM2000, EM1000S/EM2000S, EM1020, EM120, EL100/EL110, EL200/EL210, ED3501 series (media converters and Ethernet extenders)
- Power Input (AC): 90–264 VAC
- Chassis Internal Bus: 12 VDC
- Power Architecture: Dual redundant terminal-block power inputs (two separate sources supported)
- Max Power Consumption: ~19 W at full 4-module installation (depends on installed devices)
- Mounting: 35 mm DIN-rail
- Enclosure Material: Steel, electrogalvanized cold-rolled coil (SECC)
- Dimensions (W × D × H): 130 × 164 × 92.1 mm (5.12 × 6.46 × 3.63 in)
- Weight: ~1.37 kg (3.02 lb)
- Operating Temperature: 0 to 45 °C (32 to 113 °F) for EPWS variant; some docs list −20 to 60 °C for base EMC400—verify exact variant
- Storage Temperature: −20 to 70 °C (−4 to 158 °F)
- Relative Humidity: 5–95% non-condensing
- Protection Class: IP20
- Safety / EMC: UL 60950-1; FCC Part 15B Class A; EN 55022; EN 61000-6-2 / EN 61000-6-4; IEC 61000-4-x immunity suite
- Environmental Testing: IEC 60068-2-6 (vibration), IEC 60068-2-27 (shock), IEC 60068-2-32 (free fall)
Product Introduction
The EtherWAN EMC400-EPW / EMC400-EPWS is a 4-slot DIN-rail chassis designed to centralize power and mounting for EtherWAN media converters and Ethernet extenders in industrial cabinets. It accepts up to four hot-swappable converter modules and provides dual redundant 90–264 VAC power inputs feeding a 12 VDC internal bus.
This chassis is used where multiple fiber/copper media converters or extenders must be grouped in one panel with shared power and clear status indication. The -EPWS bundle includes two HDR-30-12 power supplies, enabling true dual-source redundancy and reducing single points of failure in critical network segments.
EMC400-EPW
EMC400-EPW
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No power LEDs, chassis dead | AC supply missing, blown fuse, or wiring error at terminal block | ✅ High | Measure 90–264 VAC at chassis power terminals; verify L/N/PE wiring and upstream breaker | Restore correct AC supply and check fuses before blaming the chassis |
| Only one power LED lit | One of the two redundant inputs not connected or failed | ✅ Medium | Check both power terminal blocks; measure voltage on each input; inspect wiring and breakers | Connect both supplies for redundancy; if one input never shows voltage, trace upstream power |
| Some slots show no module activity | Module not seated, backplane contact issue, or module fault | ✅ High | Power down; reseat modules firmly; verify each module’s own LEDs with known-good unit | If a specific slot consistently fails with multiple good modules, chassis backplane may be faulty |
| Modules power but link/traffic fails | Module configuration, fiber/copper cabling, or switch/PLC port issue | ❌ Low–Medium | Verify fiber polarity, copper pinout, speed/duplex settings, and switch/PLC port status | Troubleshoot at the media converter and network device level; chassis is just power/backplane |
| Overheat or thermal shutdown suspicion | High ambient temperature, blocked ventilation, or overloaded configuration | ✅ Medium | Check ambient temperature, airflow, and total module load vs. 19 W max spec | Ensure 0–45 °C environment (for EPWS), clear airflow, and correct module count/type |
If you are unsure, photograph the nameplate (-EPW or -EPWS), power wiring, and installed modules, then share module part numbers and symptoms with technical support.
Frequently Asked Questions (FAQ)
Q: What is the difference between -EPW and -EPWS?
A: -EPW refers to the 4-slot chassis family. -EPWS is the specific SKU that ships with two HDR-30-12 power supplies included. Functionally, both use the same 4-slot DIN-rail chassis; EPWS just bundles the dual PSUs.
Q: Can I mix different EtherWAN media converter modules in the same chassis?
A: Yes, within the supported list (EL2321, EL2211, EM1000/EM2000 family, etc.). All modules must be from the EtherWAN families designed for the backplane. Do not force incompatible third-party or non-listed modules into the slots.
Q: Does this chassis support hot-swap of modules?
A: Yes. The is designed for hot-swappable installation of supported media converters and extenders without interrupting other slots. Always follow site change-control procedures in live networks.
Q: What voltage does it actually need—12 VDC or 90–264 VAC?
A: The chassis accepts 90–264 VAC at the terminal block and internally distributes 12 VDC to the module backplane. You do not apply 12 VDC externally; you feed 90–264 VAC and let the internal supplies generate the 12 VDC bus.
Q: Is this still a current-production product?
A: The series is a legacy design. Some distributors still list stock, but it is effectively discontinued in favor of newer EtherWAN platforms. Treat procurement as a legacy-parts purchase and verify exact model and PSU configuration.
Q: Can I use this chassis with non-EtherWAN media converters?
A: No. The mechanical keying, backplane pinout, and power distribution are specific to EtherWAN modules validated for the . Using other brands risks damage and will not be supported.
Q: What condition are available units in?
A: Listings vary between new surplus, new old stock, and refurbished/tested. Always confirm whether the unit includes both HDR-30-12 power supplies (EPWS) or is chassis-only (EPW), and request test details for critical deployments.
