Siemens SIMATIC ET 200S Manuel - Page 33

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5.2

Wiring unused channels of the analog input modules

Rules

Pay attention to the following instructions when wiring unused channels:

● "Disable" unused input channels when setting parameters.

● A disabled channel always returns the value 7FFF

● The module cycle time is halved with the 2AI RTD HF standard module.

● To adhere to the permissible potential differences, you must wire jumpers on the terminal

2AI RTD HF

5.3

Rules

To prevent interference we recommend the following with the analog electronic modules:

● Use shielded wires to the sensors and actuators.

● Lay out the wire shields on the shield connection.

● Connect the shield connection with low impedance to the ground bus.

2AI RTD HF analog electronic module (6ES7134-4NB51-0AB0)

Manual, 05/2007, A5E01076876-02

module for the unused channels.

Analog input module

5.2 Wiring unused channels of the analog input modules

TM connection terminal

Channel 0

Connecting

Channel 1