Hirschmann MM2-2FXM2 MICE Media Module

Hirschmann MM2-2FXM2 MICE Media Module

The Hirschmann MM2-2FXM2 (Belden Part Number: 943 718-101) is a hot-swappable Ethernet media expansion module designed specifically for the Hirschmann MICE (MS20/MS30) modular industrial switch series.

Product Introduction / Overview

In highly dynamic industrial settings, networking demands are constantly evolving. Rather than replacing complete switch units when fiber demands increase, modular switches use hot-swappable expansion modules to scale smoothly.

The MM2-2FXM2 media module provides an immediate interface upgrade for MICE MS20 and MS30 switches. It adds two Multi-Mode 100Base-FX fiber optic ports with SC connectors directly to the main switch backplane. This expansion makes it simple to integrate a standard copper switch into a dual-fiber ring or star topology, maintaining high-speed uplinks up to 5 km away without needing extra panel space or separate DIN-rail converters.

Technical Table

Product Features / Core Advantages

Hot-Swappable Performance: Designed for zero-downtime maintenance. Slide the module in or out of an active MICE switch chassis without powering down the network or disrupting adjacent traffic.

Resilient SC Port Connections: Double SC fiber connections provide high mechanical retention, protecting against accidental cable disconnections on high-vibration factory floors.

Complete Software Integration: Once inserted, the host MS20/MS30 switch instantly auto-detects the MM2-2FXM2 module, assigning administrative controls to the new fiber ports in the web management GUI.

Low Power Footprint: Drawing a maximum of only 3.0 Watts from the chassis backplane, it keeps thermal loads inside dense cabinets to a minimum.

Related Models of the Same Series

The MICE media module family offers alternative options to match various copper, fiber, and distance needs:

MM2-2FXS2 (943 719-101): Features 2 x Single-Mode 100Base-FX SC ports for long-range links up to 30 km.

MM2-4TX1 (943 715-101): Features 4 x standard 10/100Base-TX RJ45 copper ports.

MM2-2FLM4 (943 720-101): Features 2 x legacy 10Base-FL multi-mode ST fiber ports.

MM3-4FSDP (943 839-001): Features gigabit capability with 4 x SFP fiber transceivers (for MS30 switches).

Environmental Tolerance Conditions

Operating Temperature Range: $0^circtext{C}$ to $+60^circtext{C}$ ($32^circtext{F}$ to $140^circtext{F}$)

Storage/Transport Temperature: $-40^circtext{C}$ to $+70^circtext{C}$

Relative Humidity: 10% to 95% (completely non-condensing)

Shock & Vibration: Certified to pass IEC 60068-2-27 (shock) and IEC 60068-2-6 (vibration) standards.

Approvals: cUL508 (safety), CE, FCC, and ATEX Zone 2 hazardous location certifications.

Installation Method

[MICE Switch Backplane]

^

| <-- Slide module along the guidelines

[MM2-2FXM2]

| <-- Tighten top/bottom mounting screws

Alignment: Align the side guide rails of the MM2-2FXM2 module with the empty expansion slot lines on your MICE MS20 or MS30 switch chassis.

Insertion: Slide the module firmly backward into the slot until the multi-pin backplane connector is fully engaged with the switch mainboard.

Securing: Tighten the two knurled retaining screws located at the top and bottom of the module housing to prevent loose connections or vibration issues.

Cabling: Remove the protective black dust covers and connect the multi-mode SC fiber cables (align Tx to Rx and Rx to Tx).

Operating Instructions

1. Configuration on Host Switch

The host switch dynamically registers the module upon insertion:

Open the host switch web browser GUI using the IP address of the parent MS20/MS30 switch.

Navigate to Port Configuration. Verify that the expansion ports are recognized as 100Base-FX fiber lines.

Set port parameters (such as link state alerts, VLAN assignments, or ring redundancy options) matching your network plan.

2. Visual Diagnosis (Front LEDs)

P LED (Power): Should be solid green, indicating the backplane is successfully supplying power to the module.

L/D LEDs (Port 1 & 2):

Solid Green: Healthy optical connection.

Flashing Green: Active data packet transmission.

Off: No active link detected.

Fault Diagnosis

"P" (Power) LED is Off:

Cause: The module is not fully seated in the chassis slot, or the parent switch has suffered a backplane issue.

Remedy: Loosen the mounting screws, pull the module out, inspect the rear pins for physical damage, and slide it back in firmly. Tighten screws securely.

"L/D" (Link) LED is Off after Fiber Connection:

Cause: Swapped Tx/Rx fibers, dirty fiber end-faces, or the link segment exceeds 5 kilometers.

Remedy: Cross-check your fiber lines to ensure the local Tx port connects to the remote Rx port. Use an optical cleaning pen to remove contaminants from the SC connectors.

Intermittent Signal Drops / Frame Errors:

Cause: Physical fiber bend exceeds limits, or dust has settled inside the optical transceivers.

Remedy: Ensure all fiber routing bends stay above the minimum 1-inch radius. Avoid keeping optical ports uncapped when cables are disconnected.

Storage Conditions

Keep the media module in its original static-shielding box inside a clean, dry room.

Storage Temperature Limit: $-40^circtext{C}$ to $+70^circtext{C}$.

Dust Prevention: Leave the protective plastic SC socket caps inserted until the moment you connect the actual patch cables. Dust contamination is the leading cause of optical power loss in industrial fiber environments.