Siemens Automation System S7-400 - Manual (Page 146)

Commissioning
6-18
Automation System S7-400 Hardware and Installation
A5E00850741-01
6.10 Installing Interface Modules (CPU 414-2, 414-3, 416-3,
417-4 and 417-4H)
Available Interface Modules
Note
Only use interface submodules that are explicitly released for use in S7-400
devices.
Installing Interface Modules
!
Warning
The modules can be damaged.
When inserting or removing interface submodules with power applied, the CPU
and interface submodules can be damaged (exception: using synchronization
submodules in an H system).
Never insert or remove the interface submodules while power is being supplied
(exception: synchronization submodules). Always switch off the power supply
before inserting or removing interface submodules.
!
Caution
Danger of damage to persons and property.
Interface submodules contain electronically-sensitive components that may be
damaged if they are touched.
The surface temperatures on the components can reach up to 70 o C and there is a
risk of burning.
For this reason, you should always hold the interface submodules on the longest
sides of the front panel.
Observe the ESD guidelines when installing interface submodules.
To fit an interface submodule in a card slot, follow the steps outlined below:
1. Hold the interface submodule on the long sides of the front plate.
2. Insert the PCB end of the interface submodule in the lower and upper guides of
the card slot, as shown in Figure 6-4.