HIRSCHMANN MM20-M4M2M2T1SAHH Media Module

HIRSCHMANN MM20-M4M2M2T1SAHH Media Module

The HIRSCHMANN MM20-M4M2M2T1SAHH is a highly flexible, multi-interface 4-port Fast Ethernet media module designed for Hirschmann’s MICE (Modular Industrial Communication Equipment) series switches, specifically fitting MS20 and MS30 modular base chassis.

Featuring a specialized combination of 1 ST multimode fiber port, 2 SC multimode fiber ports, and 1 RJ45 copper port, this multi-media expansion module serves as an ideal bridge for mixing different optical connector standards while maintaining local field device access.

Product Introduction / Overview

The MM20-M4M2M2T1SAHH plugs directly into the backplane expansion slots of MS20 or MS30 modular switches. Its unique triple-interface port arrangement allows industrial automation engineers to interconnect legacy ST (BFOC) twist-lock fiber cables and modern SC duplex fiber runs within a single switch node without requiring external media converters, while leaving one copper RJ45 port for local PLC or HMI diagnostics.

Module Nomenclature Decoding:

[MM20] : Media Module series for Fast Ethernet MICE switches

[M4] : Port 1 -> Multimode 100BASE-FX ST (BFOC) Fiber Connector

[M2] : Port 2 -> Multimode 100BASE-FX SC Fiber Connector

[M2] : Port 3 -> Multimode 100BASE-FX SC Fiber Connector

[T1] : Port 4 -> 10/100BASE-TX RJ45 Copper Port

[S] : Standard Operating Temperature Range (0°C to +60°C)

[A] : Standard Industrial Approvals (cUL508. CE, FCC)

[HH] : Dual Hirschmann Standard Release / Firmware Compliance

Technical Table

Environmental Tolerance Conditions

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

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

Vibration & Shock Resistance: IEC 60068-2-6 (Vibration) and IEC 60068-2-27 (Shock) compliant

Industrial Safety Standards: cUL508. cUL1604. CE Mark, FCC Part 15 Class A

Operating Instructions

Hot-Swapping Routine: The module can be inserted or removed while the host MS20/MS30 switch is powered on. Always disconnect active fiber and copper cables before loosening the captive screws.

Optical Dust Protection: Keep protective rubber plugs inserted into any unused ST or SC fiber ports to prevent airborne dust contamination on internal lenses.

Cable Insertion:

ST Port (Port 1): Push the bayonet connector onto the port post and twist clockwise to lock.

SC Ports (Ports 2 & 3): Push the duplex SC connector straight into the port until it clicks firmly into place.

RJ45 Port (Port 4): Standard Cat5e/6 connection with automatic speed and crossover detection.

Fault Diagnosis

Related Models of the Same Series

Storage Conditions

Storage Temperature Range: $-40^circtext{C}$ to $+85^circtext{C}$ ($-40^circtext{F}$ to $185^circtext{F}$)

Storage Humidity: 10% to 95% non-condensing relative humidity

Packaging & Handling: Keep the module stored in its original anti-static bag in a clean, dust-free indoor location until final deployment.