5-2
At least one of the measures 1 to 3 below must be adapted
to Safety input wirings for the protection against
grounding fault:
1. Grounding Safety input signal power line
In case of use of the internal power supply
Ground CME terminal
In case of use of an external power supply
Use a power supply (PELV) which is grounded on
CME terminal side.
2. A fail-safe cable routing (The requirement of
ISO13849-2 table D.4 to be met. One of the following
measures needs to be adopted)
Permanently connected (fixed) and protected
against external damage, e.g. by cable ducting or
Use of separate multicore cable
Within an electrical enclosure, with both
conductor and enclosure meeting the
requirement of IEC 60204-1
Individually shielded with earth connection
3. Using an external device for grounding fault detection
In case of connecting a device applies diagnostic test pulses
on STO input lines, the width of the test pulse (width of OFF
pulse) must be 300us or shorter.
Host device (such as PLC) for inputting safety signals need
to be able to ignore a test pulse width of 300 us.
5.4.3 Monitoring/completed signal
There are monitoring / completion output signals
indicating the operating condition and internal fault
detection condition.
The length of the cabling connected to ED+ and ED-
terminals must be twenty (20) meters or shorter.
5.4.4 EMC
The system must only be used in the EMC environment that
it is designed for, or necessary mitigations must be applied.
SJ-P1 must only be used within the EMC environment
specified in IEC61800-5-2:2016, 2
nd
environment.
5.4.5 Routing the cables
Cabling of input and output of the Safety function must be
physically and appropriately separated from the other
signal cablings.
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