Hirschmann MM20-M4M49999TAHH Media converter

Important information Note: Read these instructions carefully, and familiarize yourself with the device before trying to install, operate, or maintain it. The following notes may appear throughout this documentation or on the device. These notes warn of potential hazards or call attention to information that clarifies or simplifies a procedure. 

 Symbol explanation This is a general warning symbol. This symbol alerts you to potential personal injury hazards. Observe all safety notes that follow this symbol to avoid possible injury or death. If this symbol is displayed in addition to a safety instruction of the type “Danger” or “Warning”, it means that there is a danger of electric shock and failure to observe the instructions will inevitably result in injury. This symbol indicates the danger of hot surfaces on the device. In connection with safety instructions, non-observance of the instructions will inevitably result in injuries.

Safety instructions

UNCONTROLLED MACHINE ACTIONS To avoid uncontrolled machine actions caused by data loss, configure all the data transmission devices individually. Before you start any machine which is controlled via data transmission, be sure to complete the configuration of all data transmission devices.Failure to follow these instructions can result in death, serious injury, or equipment damage.

General safety instructions You operate this device with electricity. Improper usage of the device entails the risk of physical injury or significant property damage. The proper and safe operation of this device depends on proper handling during transportation, proper storage and installation, and careful operation and maintenance procedures. 

 Before connecting any cable, read this document, and the safety instructions and warnings. 

 Operate the device with undamaged components exclusively. 

 The device is free of any service components. In case of a damaged or malfunctioning device, turn off the supply voltage and return the device to Hirschmann for inspection. 

 Certified usage 

 Use the product only for the application cases described in the Hirschmann product information, including this manual. 

 Operate the product only according to the technical specifications. See “Technical data” on page 44. 

 Connect to the product only components suitable for the requirements of the specific application case.

 Installation site requirements 

 If you connect the device to a power supply that does NOT meet the requirements for Limited Power Source, NEC Class 2 or PS2 according to IEC/EN 62368-1 and is NOT limited to 100 W output power, the device must be installed in either a switch cabinet or other fire enclosure. The fire enclosure can be made of metal or plastic with fire-protection properties of at least V-1 according to IEC 60695-11-10. Bottom openings of the fire enclosure must NOT exceed 2 mm in diameter. 

 Only for device variants featuring supply voltage with characteristic value M9: See “Device name and product code” on page 17. Install this device only in a switch cabinet or in an operating site with restricted access, to which maintenance staff have exclusive access. 

 Strain relief Note: If the strain relief is insufficient, there is a risk of torsion, contact problems and creeping interruptions. 

 Relieve the connection points of cables and lines from mechanical stress. 

 Design strain relieves in such a way that they prevent any mechanical damage to cables, wires or conductors caused by external influences or their own weight. 

 To prevent damage to device connections, connectors and cables, follow the instructions for proper installation in accordance with DIN VDE 0100-520:2013-06, sections 522.6, 522.7 and 522.13. 

 Device casing Only technicians authorized by the manufacturer are permitted to open the casing. 

 Never insert pointed objects (narrow screwdrivers, wires, etc.) into the device or into the connection terminals for electric conductors. Do not touch the connection terminals. 

 Keep the ventilation slits free to ensure good air circulation. 

 Mount the device in the vertical position. 

 At ambient air temperatures > +140 °F (+60 °C): The surfaces of the device housing may become hot. Avoid touching the device while it is operating. 

 Qualification requirements for personnel 

 Only allow qualified personnel to work on the device.

Qualified personnel have the following characteristics: 

 Qualified personnel are properly trained. Training as well as practical knowledge and experience make up their qualifications. This is the prerequisite for grounding and labeling circuits, devices, and systems in accordance with current standards in safety technology. 

 Qualified personnel are aware of the dangers that exist in their work. 

 Qualified personnel are familiar with appropriate measures against these hazards in order to reduce the risk for themselves and others. 

 Qualified personnel receive training on a regular basis. 

 National and international safety regulations Verify that the electrical installation meets local or nationally applicable safety regulations.