Mechanical assembly of the basic module

The installation of the modules takes place in three steps:

1. The sequence of the modules

The basic CPU module with system interfaces, which are factory-installed on the left side, is extended with the power supply unit on the right and with the fieldbus connection (master or slave) left side if available.

2. Assembly of the CPU and the power supply unit

The individual modules are simply plugged together. The PC104 connector plugs should be handled carefully in order to avoid damage. When correctly assembled, no significant gap can be seen between the attached housings.

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3. Engaging on the top-hat rail

On the bottom of the modules, there is a white tension strap, which is connected with a latching mechanism. These tension straps must be pulled down before attaching to the top-hat rail. This can be done using an ordinary screwdriver and a slight turn.

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Then fix the CX1020 block on the top hat-rail using the latching straps. You should hear a soft click.

Note
Do not force the module or apply excessive pressure!

Only apply pressure at insensitive points of the housing (edges). Never apply pressure on the display, the buttons or movable parts of the CX10x0 system.

After successful latching on the top-hat rail the straps should be pushed back to their original position.

Note:

A locking mechanism prevents the individual housings from being pulled off again. Detailed information relating to disassembly of the CX1020 configuration from the top-hat rail can be found on page "Removal and disposal".

Installation position:

Note

The maximum ambient temperature for CPU modules mounted on a top-hat rail is 50°C. The orientation in which the device is fitted must be selected in such a way that cooling air can flow vertically through the ventilation holes. The images show the correct (Fig. 8) and two incorrect installation positions (Figs. 9 & 10). Observe minimum clearance! Mounting must provide a clearance of 30 mm both above and below a CX1000 device combination to ensure adequate ventilation of the base CPU module and the power supply unit.

Correct installation position:

The high-performance CX1020 system generates a significant amount of heat, which is dissipated via a passive ventilation system. This system requires the unit to be mounted correctly. Ventilation openings are located at the top and bottom of the housing. The system therefore has to be installed horizontally. This ensures optimum air flow.

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Incorrect installation positions:

The CX1020 system must not be operated vertically on the top-hat rail. A vertical position would lead to insufficient CPU ventilation, since the ventilation openings are located on the top and bottom of the housing. Installation of the system on its side would also lead to inadequate ventilation.

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