Kontron CP382 - Manual (Page 57)

CP382 System Considerations
ID 24208, Rev. 01 © 2002 PEP Modular Computers GmbH Page 5 - 3
5. System Considerations
5.1 Introduction
In addition to the basic specification requirements for the CP382 which have been addressed
in chapter 4, system integrators need to be aware of the overall system environment and the
application needs when designing the interfacing to the CP382. The following chapters address
a number of more apparent considerations which should be addressed but certainly not all of
the possible situations which may be encountered. Many of the considerations presented here
are recommendations, but some are definite requirements if the CP382 is to successfully
achieve its purpose.
5.2 General
Considerations:
1. Care must be taken to ensure that proper grounding concepts are followed, and that the
integrity of the grounding system within the application be maintained.
2. Where possible input wiring length should be kept as short as possible.
5.3 Shielding
Considerations:
1. Input cable shielding in general is recommended.
2. The requirements for shielding can be seen primarily as a function of the system design
and environment, but empirical results must also be considered.
3. The CON2 connector has a metal housing which is connected to the CP382 shield and
is isolated from the system ground.
4. Ensure that if shielding is used that it is not in anyway connected to the system ground.
5.4 External Power Supply
Considerations:
1. Voltage sources presented to the CP382 must be within the ranges specified in chapter
1.3.1 or erroneous results will occur as well as possible damage to the CP382.
2. In addition to supplying the current for the logic parts of the power switches which are
linked to the digital outputs, the external voltage supplies also have to supply the current
for the 8 digital output loads per cluster.
5.5 Cable Interfacing
If necessary, cabling to the CP382 CON2 connector should be physically fixed to prevent strain
on the CON2 connector.
Warning!
Each channel has a maximum current of 0.5 A. In situations where many chan-
nels are carrying a high current, separate, larger gauge cables for the external
power supply should be used.