User manual

TMCM-6110 Hardware Manual (V1.10 / 2012-JAN-25) 7

4.2 Board mounting considerations

The TMCM-6110 offers four metal plated mounting holes. All four mounting holes are connected to system and

signal ground (same as power supply ground).

In order to minimize distortion of signals and radiation of HF signals (improve EMC compatibility) especially in

sensitive / noisy environments it is important to ensure a solid ground connection within the system. In order

to support this, it is recommended to connect all four mounting holes of the board in addition to the supply

ground connection to system power supply ground.

Nevertheless, this might not always be an option e.g. in case the metal system chassis / TMCM-6110 mounting

plate is already connected to earth and a direct connection between supply ground (secondary side) and mains

supply earth (primary side) is not desired / not an option. In this case plastic (e.g. made of nylon) spacers /

distance bolts should be used.

4.2.1 DIN rail mounting

The board has been designed in order to support DIN rail mounting. One dimension of the board has been

limited to 100mm and there is a minimum border of approx. two millimeters alongside all four corners of the

board free of any component. This way, a standard mounting carrier for DIN rails as it is available from several

sources might be used as adapter for DIN rail mounting of the board.

Example: Mounting carrier for DIN 35 rail from WAGO® (288-003) cut to the length of the TMCM-6110 board

(130mm) with populated TMCM-6110:

Figure 4.2: DIN rail mounting