Siemens CP 243-2 Operations Instructions download pdf (Page 18)

AS-Interface –

Simple connection

Insulation piercing technology

Profiled cables can be connected to the

slave interfaces at any location easily

and safely. This has been made possi-

ble by insulation piercing.

How it’s done: Contact needles pierce

through the cable insulation and make

secure contact with the copper con-

ductor. When the needles are pulled

out again to remove a slave, the cable’s

self-healing capability means that the

holes close automatically, providing full

insulation again (in the case of EPDM

cables).

The geometry of the cable means that

polarity reversal is practically impossible

and there is no shielding to worry about.

It couldn’t be

simpler: Insulation

piercing

connection

The cables are simply placed on the lower

plate of the slave. In this picture, the lower

plate of a K45 module

Modular technology

Modular technology is a typical element

of AS-Interface technology. Slaves that

are made up of two parts are used: A

mounting plate forms the lower part,

and the module itself, the upper part.

The cable is then sandwiched between

the two. The modules contain the AS-

Interface electronics and the connec-

tions for the sensors and actuators. A

wide range of different modules are

available.

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Siemens CP 243-2 Operations Instructions Page 18