Mounting and Disassembling the Terminal Unit

Assembly on DIN rail

  1. Mount DIN rail 7.5 mm or 15 mm.

  2. Mount the Terminal Unit.

    The Terminal Unit is snapped into the DIN rail in the same way as the Terminal Base. Once secured to the DIN rail, slide the Terminal Unit to the left until it fully locks into place creating a solid mechanical and electrical connection.

    Altogether 10 Terminal Units can be combined with the Terminal Base.

    Note

    When attaching the devices, make sure the bus connectors are securely locked together to ensure proper electrical connection.

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    Maximum configuration (1 Terminal Base plus 10 Terminal Units)

  3. Disassembly: A screwdriver is inserted in the indicated place to separate the Terminal Units.

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    Disassembly of the Terminal Unit

Assembly with Screws

If the Terminal Unit should be mounted with screws, Wall Mounting Accessories TA526 Wall Mounting Accessory TA526 must be inserted at the rear side first. These plastic parts prevent bending of the Terminal Base while screwing on.

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Fastening with screws

Note

By wall mounting, the Terminal Unit is earthed through the screws. It is necessary that

  • the screws have a conductive surface (e.g. steel zinc-plated or brass nickel-plated)
  • the mounting plate is earthed
  • the screws have a good electrical contact to the mounting plate

Practical Tip

The following procedure allows you to use the assembled modules as a template for drilling holes in the panel. Due to module mounting hole tolerance, it is important to follow these procedures:

  1. On a clean work surface, assemble no more than 3 modules (e.g. one Terminal Base and two Terminal Units).

  2. Using the assembled modules as a template, carefully mark the center of all module-mounting holes on the panel.

  3. Return the assembled modules to the clean work surface, including any previously mounted modules.

  4. Drill and tap the mounting holes for the screws (M4 or #8 recommended).

  5. Place the modules back on the panel and check for proper hole alignment.

  6. Attach the modules to the panel using the mounting screws.

    Note

    If mounting more modules, mount only the last one of this group and put the others aside. This reduces remounting time during drilling and tapping of the next group.

  7. Repeat the steps for all remaining modules.