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Safety instructions
2.5 Information on I/O devices
2.5
Information on I/O devices
Fault caused by I/O devices
The connection of I/O devices can cause faults in the device.
The result may be personal injury and damage to the machine or plant.
• Only connect I/O devices which are approved for industrial applications in accordance
• I/O devices that are not hotplug-capable may only be connected after the device has
NOTICE
Damage through regenerative feedback
Regenerative feedback of voltage to ground by a connected or installed component can
damage the device.
Connected or built-in I/Os, for example, a USB drive, are not permitted to supply any voltage
to the device.
Regenerative feedback is generally not permitted.
Note
When measuring the counter emf, remember the following:
• The IPC in question must be turned off and the power supply connector must be plugged
• During the measurement, all cables from the plant to the IPC should be connected.
• All other components in the plant must be active.
24
CAUTION
with EN 61000-6-2 and IEC 61000-6-2.
been disconnected from the power supply.
in.
Operating Instructions, 07/2022, A5E50715883-AA
SIMATIC IPC BX-39A
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