2TLC172287M0201 Rev B 24 www.abb.com/jokabsafety
2015-09-17
The figures show the connection between Orion1 Base and the RT9 safety relay/ Pluto B20 Safety PLC when the
AOPD is in Manual Reset function with a reset button connected to the AOPD.
NB: Do not use varistors, RC circuits or LEDs in parallel with relay inputs or in series with OSSD outputs.
NB: The OSSD1 and OSSD2 safety contacts cannot be connected in series or in parallel, but can be used separately
according to the safety requirements of the plant.
If one of these configurations is erroneously used, the device enters the OSSD Error mode (see paragraph
8 – “Diagnostic functions”).
NB: Connect both OSSD outputs to the activating device. Failure to connect an OSSD to the activating device
jeopardises the SIL and/or PL of the system that the AOPD controls.
Figure 20 – Correct connection of OSSD outputs
Figure 21 – Incorrect connection of OSSD outputs
To Next Page
Loading...
