HIRSCHMANN MM20-Z6Z6M2M2SAHH Hybrid Fast Ethernet Media Module
HIRSCHMANN MM20-Z6Z6M2M2SAHH (order designation: MM20-Z6Z6M2M2SAHH…) is a hot-swappable hybrid Fast Ethernet Media Module designed for Hirschmann’s modular MICE (Modular Industrial Communication Equipment) Switch family (MS20 and MS30 series).
This module pairs 2 Fast Ethernet SFP slots with 2 fixed Multimode SC fiber optic ports (100Base-FX). It offers a specialized optical-only solution that combines pluggable transceiver flexibility with dedicated fixed multimode fiber connectivity in a single slot.
Product Introduction / Overview
Hirschmann MM20-Z6Z6M2M2SAHH is a 4-port Fast Ethernet optical media module integrating 2 x SFP transceiving slots and 2 x fixed multimode SC fiber ports for MS20/30 modular switch backplanes. Designed for standard industrial operating environments ($0^\circ\text{C}$ to $+60^\circ\text{C}$), it allows network architects to bridge flexible long-haul or specialized SFP fiber runs with fixed local multimode SC fiber links—all within a single hot-swappable module without disrupting live network operations.
Technical Parameter List
| Parameter | Specification |
| Product Type | Fast Ethernet MICE Optical Media Module (SFP + Fixed Fiber) |
| Model Code | MM20-Z6Z6M2M2SAHH |
| Port Configuration | 4 Ports Total: 2 x Fast Ethernet SFP Slots + 2 x 100Base-FX Multimode SC Ports |
| SFP Slots | 2 x SFP Cages (Supports Hirschmann M-FAST-SFP transceivers) |
| Fixed Fiber Interface | 2 x Duplex SC Multimode Ports ($1300\text{ nm}$) |
| Multimode Reach | Up to $5\text{ km}$ ($50/125\,\mu\text{m}$) / Up to $4\text{ km}$ ($62.5/125\,\mu\text{m}$) |
| Power Supply | Powered directly via MS20/MS30 switch backplane |
| Power Consumption | $\approx$ 5W to 7W |
| Enclosure Protection | IP20 (Industrial Housing) |
| Dimensions (W x H x D) | $38 \times 134 \times 118\text{ mm}$ |
| Hot-Swappable | Yes (Dynamic backplane insertion/removal) |
| Certifications | cUL 508, ISA 12.12.01 Class 1 Div 2, CE, EN 61000-4 series |
Product Features / Core Advantages
All-Optical Hybrid Design: Combines customizable pluggable SFP slots with cost-effective fixed SC multimode ports, eliminating copper wiring entirely for complete electromagnetic immunity.
Flexible SFP Slots: The SFP cages accept single-mode, long-haul, or specialized SFP transceivers, giving the module multi-distance optical versatility.
Hot-Swappable Backplane Architecture: Easily plugs into active MS20 or MS30 basic switch units, enabling online maintenance or transceiver swaps without taking down adjacent modules.
Complete EMI/RFI Noise Immunity: Optical fiber transmission shields data signals from heavy motors, high-voltage switchgear, and ground loops.
Comprehensive Diagnostic LEDs: On-board LEDs provide immediate physical feedback for power supply, individual port link status, speed, and duplex status.
Model Classification
Within the Hirschmann MICE MM20/MM30 series, media modules are classified by port mix, connector interface, and environmental protection level:
| Model Part Number | Port / Interface Mix | Environmental Rating |
| MM20-Z6Z6M2M2SAHH | 2 x Fast Ethernet SFP + 2 x Multimode SC Fiber | Standard Temp ($0^\circ\text{C}$ to $+60^\circ\text{C}$) |
| MM20-Z6Z6T1T1SAHH | 2 x Fast Ethernet SFP + 2 x RJ45 Copper | Standard Temp ($0^\circ\text{C}$ to $+60^\circ\text{C}$) |
| MM20-Z6Z6SAHH | 4 x Fast Ethernet SFP Slots | Standard Temp ($0^\circ\text{C}$ to $+60^\circ\text{C}$) |
| MM20-Z6Z6EBH | 4 x Fast Ethernet SFP Slots | Extended Temp ($-40^\circ\text{C}$ to $+70^\circ\text{C}$) + Conformal Coated |
| MM20-M2M2M2M2SAHH | 4 x Multimode SC Fiber | Standard Temp ($0^\circ\text{C}$ to $+60^\circ\text{C}$) |
| MM20-T1T1T1T1SAHH | 4 x 10/100Base-TX (RJ45 Copper) | Standard Temp ($0^\circ\text{C}$ to $+60^\circ\text{C}$) |
Environmental Tolerance Conditions
Operating Temperature Range: $0^\circ\text{C}$ to $+60^\circ\text{C}$ (Standard industrial rating).
Storage Temperature Range: $-40^\circ\text{C}$ to $+70^\circ\text{C}$.
Relative Humidity: 10% to 95% (Non-condensing).
Vibration & Shock Resistance: Compliant with IEC 60068 standards (up to 15g shock duration at 11 ms).
EMC Immunity: Heavy industrial ratings compliant with EN 61000-4-2 (ESD), EN 61000-4-4 (Burst), and EN 61000-4-5 (Surge).
Installation Method
ESD Safety Precautions: Put on an anti-static grounding wrist strap before handling the module.
Module Insertion:
Align the guide rails of the MM20-Z6Z6M2M2SAHH with an open slot on the host MS20 or MS30 switch frame.
Push the module in firmly until the backplane connector locks into position.
Mechanical Securing: Hand-tighten top and bottom captive thumbscrews on the faceplate to ground the module chassis to the switch rack.
Cabling Connections:
SFP Slots: Slide approved Fast Ethernet SFP transceivers into slots until latched, then connect fiber patch cables.
Fixed SC Ports: Remove protective dust caps from SC ports and insert duplex SC multimode fiber patch cords (verify Tx to Rx optical alignment).
Operating Instructions
Hot-Swap Maintenance: Modules can be inserted, swapped, or serviced while the parent switch is powered on without causing software errors or requiring a system reboot.
Diagnostic LED Status Reading:
Link/Data LED (Solid Green): Valid physical connection established.
Blinking Green/Yellow: Active network packet processing.
LED Off: Cable disconnected, improper optical Tx/Rx alignment, or cable distance limit exceeded.
Port Protection: Keep protective rubber plugs inserted in unpopulated SFP slots and SC optical jacks to prevent airborne dust accumulation on internal optical lenses.