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

AC500-S Safety Modules
DX581-S digital safety 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 SIL3 (IEC 62061) and PL e (EN ISO 13849) requirements in such condition. Two
safety output channels may have to be used to satisfy required SIL or PL level.
The parameter "Detection" was created for customers who want to use safety outputs of DX581-S for
SIL1 (or maximum SIL2 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 EN ISO 13849 requirements, if short-circuit to 24V DC cannot be excluded.
DANGER!
If an error is detected for the given safety output channel, it is directly passivated 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 acknowledge reintegration bits,
he will succeed but if the error is still present, the relevant 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 passivated.

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.
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.
112 AC500-S 30.03.2017