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Safety guidelines
2.3 Power supply
Instructions
● Make sure that no-one can trip on the cable and injure themselves or cause the device to
fall out.
● Make sure that there are no objects crushing and potentially damaging the cable.
● Avoid laying the cable over sharp edges as this can chafe the cable sheath.
● Never place the device on unsteady surfaces. It could fall down and be damaged.
● Never expose the device to direct sunlight or heat sources.
● Make sure that the device is sufficiently ventilated. Do not cover it. Never operate the
device with the protective cover on.
● Avoid subjecting the device to mechanical shocks, excessive amounts of dust, moisture,
and strong magnetic fields.
Use with additional measures
Examples of applications where the use of the HMI device requires additional measures:
● In locations with a high degree of ionizing radiation
● In locations with difficult operating conditions - for example due to:
– Corrosive vapors, gases, oils or chemicals
– Electrical or magnetic fields of high intensity
● In systems that require special monitoring, for example:
– Elevators
– Systems in especially hazardous rooms
2.3
Power supply
Safety specifications
Electric shock hazard
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.
• Observe the power supply limit values specified in the Technical Specifications.
• Fuse all equipment in the control cabinet in accordance with local safety regulations.
30
WARNING
Operating Instructions, 07/2015, A5E36360099-AA
Mobile Client900RXA
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