Connecting
5.2 Operation of the IO-Link I/O modules on a grounded/ungrounded infeed
IO-Link I/O modules
26
System Manual, 08/2021, A5E48755395-AB
Protection against outside electrical influences
Below is a description of what you must pay attention to in terms of protection against
electrical impacts and/or faults:
•
To protect against electromagnetic interference, connect the I/O devices to functional
ground.
•
Ensure correct installation and routing of the supply, signal and IO-Link cables.
•
Configure the plant/system in such a way that an error does not result in undefined states.
–
Line/wire break
–
Cross-circuit in the cable
Reference
Additional information can be found in the function manual Designing interference-free
controllers (
https://support.industry.siemens.com/cs/ww/en/view/59193566
).
5.2
Operation of the IO-Link I/O modules on a grounded/ungrounded
infeed
Introduction
Information on the overall configuration of the IO-Link I/O modules on a grounded infeed
(TN-S system) is provided below. Statements regarding the TN-S system relate to the
upstream 24 V DC power supply that is connected to the TN-S system.
Together, the IO-Link I/O modules and the IO-Link master form a unit. The following items
must be noted for the configuration.
•
IO-Link voltage supply via IO-Link master port class A
•
IO-Link voltage supply via IO-Link master port class B
•
Voltage supply for modules with high power demand via the M12-L power connector
The specific subjects discussed are:
•
Disconnecting devices, short-circuit and overload protection to IEC 60364 (corresponding
to DIN VDE 0100) and IEC 60204 (corresponding to DIN VDE 0113)
•
Load current supplies and load circuits
•
Supply voltages of the IO-Link I/O modules
Grounded infeed
In grounded incoming supplies, the neutral conductor of the supply system is grounded. A
ground fault between a live conductor and ground or a grounded system component causes
the protective devices to trip.
Summary of Contents for SIMATIC ET 200AL
Page 2: ......
Page 143: ......
Page 218: ......
Page 250: ......
Page 296: ......
Page 337: ......
Page 365: ......
Page 392: ......
Page 419: ......
Page 451: ......
Page 483: ......
Page 597: ......
Page 648: ......
Page 702: ......
Page 739: ......
Page 781: ......
Page 804: ......
Page 828: ......
Page 853: ......
Page 880: ......
Page 906: ......
Page 996: ...Diagnostics ...
Page 1121: ......
Page 1565: ......