HIRSCHMANN MM20-Z6Z6T1M2SAHH Fast Ethernet media module
Product Overview
The HIRSCHMANN MM20-Z6Z6T1M2SAHH is a hot-swappable hybrid Fast Ethernet media module designed for Hirschmann’s modular MICE switch series (MS20 and MS30 basic switches).
It provides a hybrid combination of optical fiber transceivers (SFP) and local copper ports (RJ45 and M12/ST options depending on sub-tier), allowing network engineers to bridge long-distance fiber backbone connections directly with localized control equipment without requiring separate media converters.
2. Key Features & Core Advantages
Hot-Swappable Backplane Architecture: Can be inserted or replaced while the host switch is live, ensuring zero downtime for adjacent modules.
Flexible SFP Integration: Unpopulated SFP slots allow customization between single-mode, multi-mode, or long-haul SFP transceivers (such as the Hirschmann M-FAST-SFP series).
Industrial Hardening: Engineered for extreme electromagnetic interference (EMI) immunity, vibration resistance, and long continuous operation in industrial enclosures.
Auto-Negotiation & Auto-MDI/MDI-X: Standard copper ports automatically adjust line speed (10/100 Mbps) and cable pinouts, eliminating the need for crossover cables.
Comprehensive Diagnostics: Front-panel LEDs provide status updates for link status, activity, power, and duplex modes.
3. Technical Parameters
| Feature | Specification |
| Manufacturer | Hirschmann (Belden) |
| Product Family | MICE (Modular Industrial Communication Equipment) |
| Module Type | Fast Ethernet Media Module (MM20 Series) |
| Interfaces / Ports | 2 × Fast Ethernet SFP Slots + 2 × Copper Ports (10/100 Base-TX) |
| Data Rate | 100 Mbps (Fast Ethernet) |
| Power Supply | Powered via the host switch backplane (~4W – 6W draw) |
| Protection Class | IP20 |
| Hot-Swap Support | Yes |
4. Model Nomenclature Breakdown
Hirschmann MICE modules follow a standardized coding structure:
Plaintext
MM20 – Z6 Z6 T1 M2 S A H H
│ │ │ │ │ │ │ │ └─ Approvals (cUL508. Class 1 Div 2. ATEX)
│ │ │ │ │ │ │ └─── Temperature Range (H = Standard 0°C to +60°C)
│ │ │ │ │ │ └────── Version (A = Standard Release)
│ │ │ │ │ └──────── Software / Configuration Tier (S = Standard)
│ │ │ │ └──────────── Port 4 Media (M2 = Multimode ST / FE Copper Mix)
│ │ │ └──────────────── Port 3 Media (T1 = 10/100Base-TX RJ45)
│ │ └──────────────────── Port 2 Media (Z6 = Fast Ethernet SFP Slot)
│ └──────────────────────── Port 1 Media (Z6 = Fast Ethernet SFP Slot)
└────────────────────────────── Module Generation (MM20 = Fast Ethernet)
5. Environmental Tolerance
Operating Temperature: $0^\circ\text{C}$ to $+60^\circ\text{C}$ (Standard range)
Storage / Transport: $-40^\circ\text{C}$ to $+70^\circ\text{C}$
Relative Humidity: 10% to 95% (non-condensing)
Vibration & Shock Resistance: Tested to IEC 60068 standards (15g shock, 11 ms duration)
EMC Immunity: EN 61000-6-2 (Industrial Environments)
6. Installation & Operating Instructions
Installation Steps
ESD Safety: Wear an anti-static grounding wrist strap before handling the module.
Backplane Insertion: Align the guide rails of the MM20 module with an open slot on the host MS20 or MS30 switch frame.
Locking: Push the module firmly in place until the backplane connector locks into position, then hand-tighten the captive thumbscrews on the front panel.
Cabling: Insert approved Fast Ethernet SFP transceivers into the SFP slots, then attach fiber/copper cables.
Operational Guidelines
SFP Protection: Keep rubber dust caps inserted in unpopulated SFP slots and RJ45 jacks to maintain an IP20 rating and avoid contamination.
Live Swap: To replace or service a module, disconnect all signal lines, loosen the captive screws, and pull the module out directly. Powering down the host switch is not required.