Siemens SIMATIC ET 200S Manual - Halaman 22

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Connecting

5.2 Wiring unused channels of the analog input modules

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 cycle time of the 2AI U HS module is always 250 ms.

● To adhere to the permissible potential differences (U

2AI U HS

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.

terminal module for the unused channels.

Analog input module

), you must wire jumpers on the

TM connection terminal

Channel 0

2AI U HS analog electronic module (6ES7134-4FB51-0AB0)

Channel 1

Manual, 04/2007, A5E01076015-01