HIRSCHMANN MM20-P9P9T1T1SAHH Hybrid Fast Ethernet Media Module

HIRSCHMANN MM20-P9P9T1T1SAHH (order designation: MM20-P9P9T1T1SAHH…) 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).

Featuring 2 Single-mode SC fiber optic ports (100Base-FX) and 2 RJ45 copper ports (10/100Base-TX), this module provides long-distance fiber transmission capability alongside direct copper local device connectivity in standard industrial control environments.

Product Overview

Hirschmann MM20-P9P9T1T1SAHH is a hybrid 4-port Fast Ethernet media module offering 2 x SC single-mode long-haul fiber ports and 2 x RJ45 copper ports for MS20/30 modular switch backplanes. Designed for standard operating environments ($0^\circ\text{C}$ to $+60^\circ\text{C}$), it enables long-distance optical links (up to 30 km) back to central control systems while providing local copper drops for field equipment—all within a single hot-swappable slot without interrupting active network traffic.

Technical Table

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: Tested to IEC 60068 standards (up to 15g shock duration at 11 ms).

EMC Immunity: Certified to EN 61000-4-2 (ESD), EN 61000-4-4 (Burst), and EN 61000-4-5 (Surge) for heavy industrial electrical switchgear environments.

Operating Instructions

ESD Safety Precautions: Put on an anti-static grounding wrist strap connected to cabinet earth before handling the media module.

Module Insertion:

Align the guide rails of the MM20-P9P9T1T1SAHH with an open media slot on the host MS20 or MS30 basic switch frame.

Slide the module firmly until the backplane connector locks into place.

Mechanical Fastening: Hand-tighten top and bottom captive thumbscrews on the faceplate to secure the chassis and establish chassis ground.

Cabling Connections:

Single-Mode Fiber: Remove protective plugs from the SC optical jacks and connect $9/125\,\mu\text{m}$ single-mode SC fiber patch cords (verify Tx to Rx optical pathing).

Copper RJ45: Insert shielded Cat5e/Cat6 STP cables into the RJ45 jacks until the release tabs click.

Hot-Swap Operation: The module can be dynamically inserted or removed during live switch operation without taking down active backplane communication on surrounding slots.

Fault Diagnosis

Storage Conditions

Temperature Range: $-40^\circ\text{C}$ to $+70^\circ\text{C}$ in original manufacturer anti-static packaging.

Atmospheric Protection: Store in a dry, clean, indoor location free from corrosive fumes or conductive dust.

Optical Dust Caps: Keep protective rubber plugs inserted over the 2 SC optical receptacles to prevent dust accumulation on the internal laser lenses.

Humidity: Maximum 95% relative humidity (non-condensing).

Related Models of the Same Series

The Hirschmann MICE MM20/MM30 series provides customizable options across single-mode fiber, multimode fiber, copper, and hazardous/environmental protection tiers: