Voltage Supply; Notes About Usage - Siemens SIMATIC HMI Mobile Panel 277 RO Operating Instructions Manual

Safety instructions and general notes

2.4 Voltage supply

2.4 Voltage supply
Safety specifications
The HMI device corresponds to protection class III according to EN 61131-2 or EN 50178.
The 24 VDC supply must be isolated from touch-hazardous voltages, for example by
means of a safety isolation transformer or similar equipment.
Protect the power supply circuit with a 3.15 A fuse.
Allowance should be made for the loss of voltage on the connecting cable during
dimensional analysis of the supply!
2.5

Notes about usage

Use in industry
The HMI device is designed for industrial use. For this reason, the following standards are
met:
● Requirements for emissions EN 61000-6-4: 2007
● Requirements for interference immunity DIN EN 61000-6-2: 2005
Residential use
Note
The HMI device is not suitable for use in residential areas: If you use the HMI device in
residential areas, the radio/TV reception may be impeded.
If the HMI device is used in a residential area, you must take measures to achieve Limit
Class B conforming to EN 55011 for RF interference.
A suitable measure for achieving the required RF interference level for Limit Class B
includes for example:
● Use of filters in electrical supply lines
Individual acceptance is required.
24
WARNING
Operating Instructions, 10/2015, A5E36824256-AA
Mobile Panel 277 RO