The Husman PowerMICE (Modular Industrial Communication Equipment) series switches are high-performance modular network devices designed to meet the demanding requirements of industrial automation. This series of products is centered around the MS4128 basic module, which provides users with great configuration flexibility by inserting different media modules, enabling it to adapt to diverse application scenarios ranging from 100Mbps access to Gigabit backbone. This installation manual provides users with comprehensive guidance from unboxing inspection, safety precautions, mechanical and electrical installation to basic configuration.
The PowerMICE series switches comply with relevant industry standards, providing extremely high operational reliability even under extreme conditions, and ensuring long-term stability and flexibility. The device adopts a fanless design, supports DIN rail installation, and provides redundant power input, laying a solid foundation for building high availability industrial networks. Its rich management options, including web browser, Telnet, V.24 interface, and Industrial HiVision network management software, make device configuration, monitoring, and maintenance exceptionally convenient.
Core architecture and modular design
2.1 MS4128 Basic Modules
The core of the PowerMICE series is the MS4128 basic module, which integrates all core functional units such as switching, management, redundancy, display control, power connection, and media module slots. The basic module provides:
4 slots: used for installing 10/100 Mbit/s media modules.
1 slot: used for installing gigabit media modules, supporting 2 gigabit ports.
By inserting a 4-port media module, the basic module itself can connect up to 16 100Mbps network segments. If combined with the MB-2T expansion module, an additional 2 100Mbps media module slots can be added, bringing the total number of ports to 24 100Mbps ports, while also providing 4 Gigabit ports to meet high bandwidth requirements.
2.2 Media Module Series
The flexibility of PowerMICE is mainly reflected in its rich selection of media modules, where users can customize physical interfaces for each port based on actual transmission distance and media type.
MM2 series: Provides multiple 100Mbps port combinations, such as 4-port RJ45 electrical port module (MM2-4TX1), 4-port multimode fiber MTRJ module (MM2-4FXM3), and hybrid module for electrical and optical ports (MM2-2FXM3/2TX1).
MM3 series: Provides a wider range of interface types, including ST type multimode fiber module (MM3-4FLM4), MTRJ type multimode fiber module, and long-distance single-mode fiber module (MM3-1FXL2/3TX1), to meet the transmission needs of different distances.
MM4 series: Provides Gigabit Combo port modules such as MM4-4TX/SFP and MM4-2TX/SFP. Each Combo port can use the built-in RJ45 electrical port or insert SFP optical modules, enabling flexible selection of gigabit transmission media.
MM22 PoE module: This module supports the IEEE 802.3af standard (Power over Ethernet) and can provide power to powered devices (PDs) such as IP phones, wireless APs, and network cameras through Ethernet cables. PoE voltage is applied through idle lines, and a single module can power up to 4 Class 0 or Class 3 devices.
SFP module: Provides a wide range of 100M and 1G SFP optical module options, including multimode, single-mode, long-distance (LH), and single fiber bidirectional (BIDI) modules, greatly expanding the coverage range of the network.
ATEX certification and safety regulations for use in hazardous areas
An important feature of the PowerMICE series is that it has passed ATEX certification and can be used in potentially explosive environments. The manual provides detailed safety usage conditions for this purpose.
3.1 ATEX certification mark and conditions
Certification mark: Equipment models suitable for hazardous areas (such as MS4128-xxx) are clearly marked with the II 3G and Ex nA IIC T4 Gc markings, with an ambient temperature range of 0 ° C to+60 ° C.
Installation shell requirements: The equipment must be installed in a suitable shell that meets the requirements of EN 60079-15, has a protection level of at least IP54, and requires the use of tools to open the lid.
Power terminal fixation: The power plugs P1 and P2 must be fixed using the accompanying Z-shaped metal sheet and M2.5 screws with toothed washers to prevent loosening in vibration environments.
Transient voltage protection: Measures must be taken to prevent the rated voltage from being exceeded by transient disturbances exceeding 119V.
Cable temperature requirements: If the temperature at the entry point of the cable or conduit exceeds 70 ° C or the temperature at the branch point of the conductor exceeds 80 ° C under rated conditions, the temperature specifications of the selected cable must conform to the actual measured temperature value.
Do not open with electricity: Clear warning "DO NOT OPEN WHEN ENERGY" (Do not open with electricity).
3.2 General Electric Safety
SELV/PELV power supply: For safety reasons, the equipment is designed to use low voltage power supply. SELV circuits that comply with IEC/EN 60950-1 voltage limits must be connected to the power connection terminals and signal contacts. The power supply voltage is electrically isolated from the casing.
North American market requirement: The device must be connected to a power source that meets NEC Class 2 requirements. If redundant power supply is used, the combination of two power sources must also meet Class 2 requirements and only use Class 1, 75 ° C copper wires.

Installation and Debugging Guide
The manual provides a detailed step-by-step installation guide to ensure that the equipment can be put into operation correctly and safely.
4.1 Mechanical Installation
DIN rail installation: The device can be easily mounted onto a 35mm DIN rail (compliant with DIN EN 60175). During installation, hang the card slot on the upper part of the device into the guide rail, and then press the lower part of the device towards the guide rail until it clicks into place. The lower panel of the device can be grounded through DIN rails or through independent grounding screws.
Media module installation: The media module supports hot swapping and can be installed while the device is running. Insert the module into the slot from left to right and tighten the screws at the four corners during installation.
Expansion module installation: The MB-2T expansion module also supports hot swapping. When installing, first remove the side panel on the right side of the basic module, then push the expansion module towards the basic module along the DIN rail until they are plugged together, and finally tighten the screws to secure it.
4.2 Electrical Connections
Power and signal contacts: The power and signal contacts are connected through two 4-pin pluggable terminal blocks. The manual emphasizes the importance of using the accompanying Z-shaped metal sheet and M2.5 screws to secure these terminal blocks. The redundant power input is decoupled, and the equipment is powered by a higher voltage power source. The signal contact is a passive relay contact used for remote diagnosis, which can report various events such as power failure, equipment failure, link interruption, and ring network redundancy failure.
PoE power supply: The MM22 PoE media module needs to be connected to an external 48V DC power supply through a 3-pin terminal block (recommended to use Husman RPS60/48V EEC power supply). When connecting, it is necessary to ensure that the length of the power supply line is less than 3 meters and the wire diameter meets the 1.5A current carrying requirement.
4.3 DIP switch configuration
The 6-pin DIP switch at the bottom of the device is used to quickly configure critical redundancy and startup functions without entering the software interface.
Switch 1 (RM): Turn on/off the redundancy manager function.
Switch 2 (Ring Port): Select the ring network ports that make up HIPER Ring (default to ports 1 and 2 of module 1; switch to ports 1 and 2 of module 2 when turned on).
Switch 3 (Stand by): Turn on/off the standby coupling function.
Switch 4 (HIPER Ring): Global enable/disable HIPER Ring function. When closed, the ring network port can be used as a regular port.
Switch 5 (Software configuration/DIP configuration): Choose between software configuration or DIP switch configuration. The default position is OFF, indicating that software configuration takes priority.
Switch 6 (Service): Switch the device to service mode.
4.4 Data Cable Connection
The manual provides detailed instructions on the connection methods and pin assignments for various ports.
10/100 Mbit/s TP port: RJ45 or M12 connector, supports Auto MDI/X, pin allocation conforms to MDI-X mode.
PoE port: RJ45 connector, apply 48V PoE voltage through pins 4, 5 and 7, 8 (idle line pairs).
Gigabit TP port: RJ45 connector, supports 1000BASE-T, pin allocation complies with MDI-X.
Fiber ports: Use DSC, ST, MTRJ, or SFP connectors. It is necessary to ensure that the port types match (such as LH to LH, SX to SX).
AUI port: used to connect traditional devices that comply with IEEE 802.3, via a 15 pin Sub-D connector.
Rich status display and basic settings
5.1 LED status indication
PowerMICE provides three layers of LED indicator lights, which greatly facilitate on-site fault diagnosis.
Device status LED: displays power status (P1/P2), redundancy manager status (RM), system operation status, relay alarm status (RELAY1/RELAY2), etc.
Display status LED: By using the "SELECT" button on the basic module, the display meaning of the media module port LED can be switched, such as displaying link/data status (L/D), duplex mode (FDX), transmission speed (1000), auto negotiation status (AUTONEG), ring port allocation (RING PORT), etc.
Port status LED: Each port corresponds to a dual color LED, and its display content is determined by the "display status", which can indicate link establishment, data transmission, speed, duplex mode, and PoE power supply status.
5.2 Basic Settings and Interfaces
IP address configuration: IP parameters need to be configured during the first installation of the device. Support configuration through various methods such as V.24 serial interface, HiDiscovery protocol, BOOTP, DHCP, DHCP Option 82, and AutoConfiguration Adapter.
Default setting: The factory default IP address is obtained through DHCP; The management password is user/public (read-only) and admin/private (read-write); V. 24 interface speed of 9600 Baud; The ring network redundancy and backup coupling functions are disabled by default.
V. 24 Interface: Provides an RJ11 interface for local connection to VT100 terminals or PCs for command line interface (CLI) management.
USB interface: used to connect to the AutoConfiguration Adapter ACA21-USB for quick saving, loading, and software updates of configurations.
Technical specifications and performance data
The manual provides detailed electrical, environmental, and physical specifications in the technical data section.
Power supply: rated 24V DC (-25% to+33%), SELV/PELV redundant input. The power consumption is 16.0W.
Signal contact: Maximum switch current 1A, maximum switch voltage 60V DC or 30V AC, SELV.
Environment: Operating temperature from 0 ° C to+60 ° C (ATEX model); Storage temperature -40 ° C to+70 ° C; protection level IP20.
EMC standards: The product complies with various EMC standards such as EN 61000-6-2 (industrial environment immunity), EN 55022 Class A (radiated emission), EN 50121-4 (railway applications), and FCC 47 CFR Part 15 Class A.
Network Range: Provides detailed transmission distance data for various fiber optic SFP modules. For example, gigabit multimode modules (SX/LC) can reach up to 550 meters on 50/125 μ m optical fibers; Gigabit single-mode module (LX/LC) can reach up to 20 kilometers on 9/125 μ m optical fiber; The long-distance module (LH/LC) can reach up to 80 kilometers.
Summary
The Husman PowerMICE series industrial Ethernet switches have become an unbreakable connection core in industrial automation networks due to their powerful modular architecture, rich media selection, ATEX compliant explosion-proof design, and excellent reliability. Whether building the basic network of factory workshops or deploying monitoring systems in hazardous areas such as petrochemicals, PowerMICE can provide flexible, safe, and high-performance solutions. By strictly following the instructions in this installation manual, users can ensure the safe and correct deployment of equipment in various harsh environments, providing solid support for the continuous and stable operation of critical businesses.
