Mounting, Dimensions And Electrical Connection - ABB AC500-S Safety User Manual

3.4.3 Mounting, dimensions and electrical connection

The input/output modules can be plugged only on spring-type TU582-S I/O terminal unit. The
unique mechanical coding on I/O terminal units prevents a potential mistake of placing the non-
safety I/O module on safety I/O terminal unit and the other way around. Basic information on
system assembly is shown here. Detailed information can be found in
Installation and maintenance have to be performed according to the technical rules, codes and
relevant standards, e.g. EN 60204 part 1, by skilled electricians only.
2020/06/19
DX581-S safety digital input/output module > Mounting, dimensions and electrical connection
DANGER!
If for one of the output channels you set Detection = OFF, the warning appears
that the output channel does not satisfy SILCL 3 (IEC 62061) and PL e
(ISO 13849-1) requirements in such condition. Two safety output channels may
have to be used to satisfy required SILCL or PL level.
The parameter "Detection" was created for customers who want to use safety
outputs of DX581-S for SILCL 1 (or maximum SILCL 2 under special conditions)
or PL c (or maximum PL d under special conditions) safety functions and have
less internal DX581-S pulses visible on the safety output line. Such internal
pulses could be detected as LOW signal by, for example, drive inputs, which
would lead to unintended machine stop.
DANGER!
Short-circuit to the ground for output channels in DX581-S module is monitored.
However, short-circuit to 24 V DC on the output wire is not monitored. End-
users have to take appropriate actions (e.g., on the application side by defining
appropriate test periods for safety function or by reading back the status of the
output wire using one of available safety digital inputs) to satisfy their respective
IEC 62061 and ISO 13849-1 requirements, if short-circuit to 24 V DC cannot be
excluded.
DANGER!
If an error is detected for the given safety output channel, it is directly passi-
vated by DX581-S module.
Note that for some errors, the reintegration request bit for passivated output
channels is automatically set to HIGH as soon as the channel is passivated and
the expected LOW state ("0" value) was reached by the output channel. Such
behavior can be seen for some errors because DX581-S module is not able in
the LOW ("0" value) output channel state to check if previously detected errors
which lead to the channel passivation still exist or not.
If the user attempts to reintegrate such output channels using relevant acknowl-
edge reintegration bits, he will succeed but if the error is still present, the rele-
vant channels will be passivated in the next DX581-S error detection cycle.
In the case of internal output module errors, the complete module will be passi-
vated.
3ADR025091M0208, 12, en_US
AC500-S safety modules
Ä [4].
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