Hirschmann MS4128-L2P – Hirschmann 100-Megabit SFP Media Expansion Module
I. Basic Overall Information
Brand: Hirschmann (now part of Belden, a leading brand in industrial control industrial switches)
Complete Order Number: MM20-Z6Z6Z6Z6SAHH | Original Factory Internal Material Code: 943938001
Product Positioning: MICE MS20/MS30 modular industrial switch-specific hot-swappable port media sub-module. It cannot be used alone; it must be inserted into the MS20/MS30 switch main slot to operate.
Product Status: The original factory has discontinued production. It is the mainstream model of backup parts for thermal power and chemical DCS/SIS control systems.
Model Code Disassembly (Meaning of Z6 Field) MS4128-L2P
MM20: Module Series, Gigabit Port Media Module (all ports have a rate of 100Mbps)
4 groups Z6: A total of 4 independent 100M SFP optical slots (4 hundred-megabit SFP optical ports, freely configurable optical modules)
Z6 = Empty SFP slot, supports insertion of 100Mbps SFP transceivers
SAHH suffix: Hardware version, coating, wide temperature range, protection configuration
With triple protection coating; wide temperature industrial grade; hardware reinforced shock resistance and anti-interference; IP20 cabinet protection
Core Port Specifications
Port quantity: 4 × 100BASE-FX SFP slots (hundred-megabit)
Rate: Fixed hundred-megabit (10/100M adaptive, no gigabit capability)
SFP compatibility: Can insert multi-mode / single-mode hundred-megabit optical modules as needed
Multi-mode 850nm: Transmission distance 2km
Single-mode 1310nm: The farthest distance up to 20/40km
Insertion characteristics: Supports hot plugging, online replacement without interrupting the communication of the entire switch
Compatible Host Rack
Only compatible with Hirschmann MICE modular switches:
MS20 series: All ports of the entire machine are hundred-megabit, the most commonly used combination model
MS30 series: Hundred-megabit ports + uplink gigabit ports hybrid switch
Host slots are divided into 2-slot / 4-slot structure, 4 slots can be equipped with MB-2T expansion backplane to upgrade to 6 slots, flexible stacking of optical port quantity
Hirschmann
Electrical, Environmental and Mechanical Parameters
Power supply: No external power supply required, powered by the switch backplane uniformly Working temperature
Standard: 0℃ ~ +60℃
This model with coating is wide temperature range: -40℃ ~ +70℃ (special for power plants, outdoor high-temperature / severe cold cabinets)
Protection level: IP20 (installed in the DIN rail of the cabinet)
Anti-interference EMC: meets IEC 61000 industrial strong electromagnetic compatibility standards (ESD, surge, pulse group immunity), suitable for frequency converters, large power motors, power plant environment
Seismic and shock resistance: complies with vibration and shock specifications of rail transit and power industry
Weight: approximately 225g
Certifications: CE, UL, Class1 Div2 (available in chemical explosion-proof areas)
Integrated network functions of the switch (based on the host)
The module itself has no switching logic, all network management and redundancy functions are provided by the MS20/MS30 host:
Redundant ring network: Hirschmann exclusive HIPER-Ring self-healing ring network (disconnection recovery < 50ms, essential for DCS interlock), RSTP
Network management functions: VLAN, IGMP multicast, QoS traffic priority, port mirroring, port security, broadcast storm suppression
Management mode: Web page, CLI serial command line, SNMPv3 industrial network management
Operation and maintenance: USB port for configuration backup import, faulty module can be replaced in one click without reconfiguration
Typical application scenarios
Fossil power, gas turbine GE Mark VIe, Honeywell PKS, Foxboro I/A DCS control systems optical fiber ring network
Oil and gas, chemical SIS safety instrument system, FGS fire and gas system industrial communication network
Far-distance IO substation in the factory optical fiber convergence, pump station / station SCADA monitoring networking
Rail transit, metallurgical factory strong electromagnetic interference environment industrial Ethernet
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