HIRSCHMANN MM20-Z6Z6Z6Z6SZHH Media Module

HIRSCHMANN MM20-Z6Z6Z6Z6SZHH Media Module

The HIRSCHMANN MM20-Z6Z6Z6Z6SZHH is a maximum-flexibility, high-density 4-port SFP expansion module engineered for Hirschmann’s MICE (Modular Industrial Communication Equipment) switch series, specifically designed for MS20 and MS30 modular base chassis.

Featuring 4 Fast Ethernet Small Form-Factor Pluggable (SFP) transceiver slots along with hazardous location certifications (Class 1 Div 2 / ATEX Zone 2), this module provides tailored, field-upgradeable optical and copper interface configurations for mission-critical automation networks.

Unique Product Description

Unlike fixed-port media modules, the MM20-Z6Z6Z6Z6SZHH serves as an open transceiver carrier card. It allows network architects to populate each of its four ports independently with a wide variety of pluggable SFP transceivers—including Fast Ethernet single-mode fiber, multimode fiber, or specialized copper transceivers.

This modularity enables custom link lengths ranging from 100 meters to over 120 kilometers on a single card, making it the premier choice for complex industrial networks with varying distance and medium requirements.

Decoding the Hirschmann MICE model designation:

MM20: Media Module family for Fast Ethernet (100 Mbps) modular MICE switch series.

Z6 Z6 Z6 Z6: 4 x Fast Ethernet SFP pluggable transceiver slots (Ports 1 through 4).

S: Standard Operating Temperature Range ($0^\circ\text{C}$ to $+60^\circ\text{C}$).

Z: Hazardous Location Approvals (cULus Class 1 Div 2 / ATEX Zone 2).

HH: Dual Hirschmann Standard Release / Firmware Compliance.

Product Advantages and Features

Maximum Modular Flexibility: Open SFP slot design allows complete customization of optical wavelengths, connector types (LC/SC), and transmission distances on a port-by-port basis.

Hazardous Area Certified: Meets rigorous cULus Class 1 Division 2 (Groups A, B, C, D) and ATEX Zone 2 requirements for deployment in hazardous industrial locations.

Future-Proof Scalability: Network links can be reconfigured or upgraded to longer-range optics simply by swapping the SFP transceiver rather than replacing the entire media module.

Complete EMI/RFI Immunity: Optical fiber links provide total galvanic isolation, shielding the core switch assembly against power surges, ground loops, and heavy electromagnetic interference.

Hot-Swappable Infrastructure: Supports hot swapping of both the host media module in the MS20/MS30 backplane and individual SFP transceivers in active ports without network downtime.

Technical Specifications Quick Reference

Application Cases

Chemical & Petrochemical Refineries: Deployed in Class 1 Div 2 / ATEX Zone 2 hazardous areas where explosive vapors require safety-certified industrial networking equipment.

Long-Distance Pipeline Monitoring: Connects remote pumping stations across vast distances by pairing SFP slots with long-haul single-mode optics (up to 120 km).

Power Generation & Transmission: Provides complete electrical isolation between high-voltage switchyards and control rooms using noise-immune SFP fiber modules.

Heterogeneous Factory Backbones: Integrates multi-building campus networks where different segments use different fiber types (e.g., multimode for short distances within the plant, single-mode between buildings).

Other Models in the Same Series

The Hirschmann MICE MM20 system offers varied combinations of fixed fiber, copper, and SFP transceiver interfaces:

Installation and Maintenance

Installation Procedure

ESD Grounding: Wear a grounded anti-static wrist strap prior to opening packaging or handling the module.

Module Alignment: Slide the MM20 module into an open slot on the host MS20 or MS30 chassis along the guide rails until its rear multi-pin connector locks into the backplane.

Fastening: Hand-tighten the captive screws at the top and bottom of the module faceplate to secure mechanical grounding and vibration resistance.

SFP Insertion: Remove protective dust plugs from the SFP slot. Slide the desired Fast Ethernet SFP transceiver into the slot until it clicks securely into place.

Fiber Connection: Connect LC or SC fiber patch cables to the SFP transceiver, ensuring Transmit (Tx) connects to Receive (Rx) on the remote node.

Maintenance & Troubleshooting

Dust Protection: Always leave rubber dust plugs installed in any empty SFP slots or unused transceivers to protect internal optical receivers from contamination.

Transceiver Diagnostics: Link status and activity LEDs on the front panel display individual port health. If the link light remains off, verify SFP compatibility and check optical power levels.

SFP Hot-Swapping: SFP transceivers can be inserted or removed live without powering down the host switch or affecting other operational ports.