Non-Reactive Bus Terminals; Fig. 13 El2008; Fig. 15 El2004; Fig. 28 El2022 - Beckhoff EL2124 Documentation

1.6

Non-reactive Bus Terminals

Use of non-reactive Bus or EtherCAT Terminals in safety applications
If a Bus or EtherCAT Terminal is described as non-reactive, this means that the consecutive termi-
nal behaves passively in a safety application (e.g. in the case of the all-pole switch-off of a potential
group).
In this case the terminals do not represent an active part of the safety controller and do not affect
the Safety Integrity Level (SIL) or Performance Level (PL) attained in the safety application.
For details, please refer to chapter 2.17f in the TwinSAFE application manual.
Pay attention to the hardware version
Please pay attention to the information about the hardware version and non-reactivity of the respective Bus
Terminal in the chapters "Technical Data" or "Firmware Compatibility"!
Only terminals with the appropriate hardware version may be used without the attained SIL/PL being af-
fected!
The Bus or EtherCAT Terminals regarded as non-reactive at the time of preparing this document are listed in
the following tables together with their respective hardware versions.
Terminal name
Bus Terminal
KL2408
KL2809
KL2134
KL2424
KL9110
Terminal name
EtherCAT terminal
EL2004
EL2008
EL2022
EL2024
EL2034
EL2809
EL2872
EL2878-0005
EL9110
EL9410
External wiring
The following requirements are to be ensured by the system manufacturer and must be incorporated into the
user documentation.
• Protection class IP54
The terminals must be installed in IP54 control cabinets to ensure the necessary protection class IP54.
• Power supply unit
The standard terminals must be supplied with 24 V by an SELV/PELV power supply unit with an output
voltage limit U of 60 V in the event of a fault.
max
• Prevention of feedback
Feedback can be prevented through different measures. These are described below. In addition to
mandatory requirements there are also optional requirements, of which only one needs to be selected.
EL20xx, EL2124
NOTE
from hardware version
05
02
09
05
07
from hardware version
15
07
09
06
06
01
01
00
13
16
Version: 5.2
Foreword
13