Siemens Simatic S7-400, Installation Manual, Page: 46 / 228

Installing the S7-400
2-30
Automation System S7-400 Hardware and Installation
A5E00850741-01
2.13 Installing Modules in a Rack
Introduction
All modules are installed using the same procedure.
!
Caution
Modules and racks can be damaged.
Do not apply any undue force when installing the modules in a rack, because you
will more than likely damage the devices.
Carefully follow the steps described below for the installation sequence.
Tool
The tool needed to install the modules is a cylindrical screwdriver with 3.5 mm
blade width.
Installation Sequence
To install modules in a rack:
1. Remove the dummy plates from the slots at which you intend to insert modules.
Grasp the dummy plate at the points marked and pull it forward and off.
With double and triple-width modules, you must remove the dummy plates from
all the slots to be covered by the relevant module.
2. Remove the cover, if applicable, from the module (see Figure 2-3).
3. Disconnect the power supply connector at the power supply module.
4. Attach the first module and swing it downwards (see Figure 2-4).
If you feel a resistance when swinging the module down, raise it slightly and
then continue.
5. Tighten the module screws top and bottom with a torque of 0.8 to 1.1 N/m (see
Figure 2-5). Triple-width modules are secured with two screws at the top and at
the bottom.
6. Refit the module cover, if applicable.
7. Fit the remaining modules in the same way.
The individual steps for installation are explained below.
The method of removing modules is described in Chapter 7.