Connecting The Device; Notes On Connecting - Siemens SIMATIC IOT Operating Instructions Manual

Installing and connecting the device

3.3 Connecting the device

3.3 Connecting the device
3.3.1

Notes on connecting

Risk of lightning strikes
A lightning flash may enter the mains cables and data transmission cables and jump to a
person.
Death, serious injury and burns can be caused by lightning.
Take the following precautions:
• Disconnect the device from the power supply in good time when a thunderstorm is
• Do not touch mains cables and data transmission cables during a thunderstorm.
• Keep a sufficient distance from electric cables, distributors, systems, etc.
NOTICE
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.
Note the following when connecting I/O devices:
• Read the documentation of the I/O devices. Follow all instructions in the documentation.
• 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.
NOTICE
Ferrite required at USB cables
The interference immunity of the device according to the data in the technical specifications
is only guaranteed when the cables at USB and micro USB ports are equipped with a ferrite
magnet. Use only USB cables equipped with a ferrite magnet.
26
WARNING
approaching.
with EN 61000-6-2 and IEC 61000-6-2.
been disconnected from the power supply.
SIMATIC IOT2020, SIMATIC IOT2040
Operating Instructions, 10/2016, A5E37656492-AB