Connecting The Power Supply - Siemens SIMATIC HMI IRD400 Operating Instructions Manual

Installing and connecting the display unit
3.3 Connecting the display unit
Cable shielding is not suitable for use as function ground.
3.3.3

Connecting the Power Supply

Information about the power supply
NOTICE
Safe electrical isolation
Use only 24 V DC power supply units with safe electrical isolation in accordance with IEC
60364-4-41 or HD 384.04.41 (VDE 0100, Part 410), for example, in accordance with the
PELV standard.
The supply voltage must be within the specified voltage range. Incorrect voltage may cause
function failures on the device.
Applies to non-isolated system design:
Note
Connect the GND 24 V connection from the 24 VDC power supply output to equipotential
bonding for uniform reference potential. Select a central termination point as far as possible.
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Operating Instructions, 05/2018, A5E36790512-AC
IRD400