Echelon DM-21 Device Manager Manuel d'utilisateur télécharger pdf (Page 16)

2-2 Description of the DM-21 Base Plates

The DM-21 Base Plate

The DM-21 module is installed in a LonPoint Type 1 Base Plate, revision 1A.

Wiring connections to the DM-21 module are presented in Chapter 4.

The rear of the PCB assembly includes a polarized, shrouded, 14-pin interface

connector that connects to a mating socket in a Type 1 Base Plate (for mounting

on to 4" square electrical boxes) or Type 1D DIN Base Plate (for mounting to a

35mm DIN rail or a wall).

Network, power, and I/O wiring are connected to screw terminals located on a

Type 1 Base Plate (figure 2.1) or Type 1D DIN Base Plate (figure 2.2), into which

the DM-21 module is plugged; no wiring is ever connected directly to an Interface

Module. A writing space is provided on the back of the Type 1 Base Plate for

recording the date of installation or other pertinent information. Installers

should take care to use a fine-point (smudge-free) pen. In Type 1/1D Base Plates,

the associated module is affixed to the Base Plate by means of two 8-32, 3/8”

screws (Echelon 205-0130-01) that are provided with each module.

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Echelon DM-21 Device Manager Manuel d'utilisateur Page 16