Connect Standard Inputs/Outputs - Siemens SIMATIC KP8 Operating Instructions Manual

Do not confuse the wires. Refer to the label for the contact pins on the rear of the HMI
device.
Note
The HMI device is equipped with a polarity reversal protection circuit.
Connecting the power supply
For the 24 VDC supply, use only power supply units with safety isolation complying with
IEC 364-4-41 or HD 384.04.41 (VDE 0100, Part 410), for example according to the
standards, SELV (Safety Extra Low Voltage ) and PELV (Protective Extra Low Voltage).
The supply voltage must be within the specified voltage range. Any other voltage might lead
to failure of the HMI device.
Applies to floating system design:
Connect the connection for GND 24 V from the 24 V power supply output to equipotential
bonding for uniform reference potential. For this purpose, choose a connecting point that is
as close as possible to the center.
4.4.4

Connect standard inputs/outputs

On the back of the HMI device you will find 8 digital inputs/outputs for non fail-safe input and
output devices. Non-fail-safe inputs/outputs are shown in gray in the following illustration.
Unconnected inputs/outputs are automatically set to "0".
KP8, KP8F
Operating Instructions, 10/2010, A5E03284305-01
CAUTION
Mount and connect KP8 and KP8F
4.4 Connecting the HMI device
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