Hirschmann MACH102 Switch Installation and Power Supply Guide

Engineering Tip: If only a single power supply is connected, the device will continuously report power failure alarms. This alarm can be blocked through the management interface, or the two inputs can be logically associated through software configuration.

3.3 External power supply for PoE media module

The M1-8TP-RJ45 PoE module requires independent 48~57V DC (SELV/ES1) power supply, which is connected through the 3-pin terminals on the module (+, -, protective ground). The external power supply must meet the following requirements:

Output power<250W, current limit or slow melting of fuse 5A

Insulation withstand voltage 2250V DC (48V output to ground)

Power supply line length<3m, wire diameter suitable for 5A current

Warning: The PoE voltage must be disconnected before plugging or unplugging the PoE module, otherwise there is a risk of fire or electric shock. The total PoE power limit of the module is 124W, and it can connect up to 8 Class 0 PD devices (with a maximum of 15.4W per port).

Chapter 4: Configuration and Use of Signal Contact Points (FAULT)

The front panel of the device provides a 2-pin signal contact terminal (screw type) for remote fault alarm. The contact is a normally closed relay, which closes normally and opens in case of a fault. The triggering conditions include:

Either power supply is lost or under voltage

Internal equipment malfunction

Any port link interruption (can be detected by blocking each port through the management interface)

The internal temperature of the equipment exceeds the limit

ACA configuration adapter removed

Loss of ring network redundancy (if RM mode is enabled)

Electrical parameters: maximum switching current of 1A, maximum voltage of 60V DC or 30V AC (SELV/ES1), maximum wire diameter of AWG16. When wiring, first unplug the terminal block, connect the signal wire, then plug it back in and tighten the screw (torque 0.34Nm).

Chapter 5 Installation of Media Module and SFP

5.1 Media module installation (ESD protection)

The media module is an electrostatic sensitive device, and anti-static measures should be taken before installation (wearing a wristband and connecting the device to ground). Steps:

Loosen the two screws of the media module slot protection cover and remove the cover plate.

Align the module with the guide rail and push it into the slot, ensuring that the pins are fully engaged.

Tighten the fixing screws on both sides of the module (torque 0.5Nm).

Hot swappable restriction: It is allowed to replace modules of the same type during operation (such as replacing a damaged TX module with a new TX module), but if different media types are replaced (TX for FX), the device will perform a soft restart, causing a brief network interruption.

5.2 SFP transceiver installation

The gigabit Combo port (SFP slot) and M1-8SFP media module of the device both support SFP. Steps:

Remove the SFP dust cap.

Push the SFP (lock buckle closure) into the slot until you hear a click to lock it.

Hirschmann certified SFP modules must be used (see attached list), otherwise they may be incompatible or lose certification.

Note: After inserting the SFP, the corresponding RJ45 gigabit port is automatically disabled (both share the same channel). Fiber optic ports must comply with the matching rules of "SM to SM, MM to MM, LH to LH".

Chapter 6 Data Cable Connection and Transmission Distance

6.1 Twisted pair port (RJ45)

100Mbps port: supports 10/100BASE-TX, Auto negotiation, Auto polarity, Auto crossover (MDI/MDI-X adaptive), up to 100m (Cat5e).

Gigabit Combo port (RJ45 mode): Supports 10/100/1000BASE-T and also has adaptive function, with a maximum length of 100m (Cat5e or above).

PoE port: Adopting Alternative A (phantom power supply), which means that data lines transmit power simultaneously, complying with IEEE 802.3af, with a maximum of 15.4W per port.

6.2 Fiber Optic Ports (SFP or Fixed Optical Modules)

The transmission distance depends on the SFP type (see manual tables 14 and 15):

Multimode (850nm): Typical 550m (1000BASE-SX)

Multimode (1310nm): up to 2km (1000BASE-MX)

Single mode (1310nm): 0-20km (LX) or 14-42km (LX+)

Long distance (1550nm): 23~80km (LH) or even 71~128km (LH+, low loss fiber)

100Mbps FX: Multi mode 0-5km, Single mode 0-30km, Long range up to 140km

System margin: The data in the table already includes a 3dB system margin (some are 2.5dB) to ensure connector loss and aging margin in actual engineering.

Chapter 7 LED Status Diagnosis and Ring Network Management

7.1 System Status LED

P (Power): Green=Power supply normal (non redundant) or dual normal (redundant); Yellow=Redundant model with only one power supply; Extinguish=no power or undervoltage.

RM (Ring Network Manager): Green=RM activated and redundant ports closed (ring network intact); Yellow=RM activated and redundant ports open (ring network broken but still working); Flashing=ring network configuration error (such as ring port not connected).

Sb (Stand by): Green=Stand by coupling function enabled.

FAULT (red): illuminated=signal contact disconnected (alarm state), extinguished=normal.

7.2 Port Status LED

Each port typically has one dual color LED (or two independent green/yellow LEDs):