User guide

PSEN op4B Series Operating Manual

• Under no circumstances should safety contacts OSSD1 and

OSSD2 be wired in series or parallel; however, both may be used

separately.

If one of these two configurations should be used by mistake, the

safety light curtain will indicate an output malfunction (see Ch. 7

“Diagnostic functions”).

• Connect both OSSD outputs to the control element. If an OSSD

output is not connected to the control element, this will have a

negative effect on the safety level of the system in which the safety

light curtain is used.

Fig. 17

Fig. 18

Fig. 19

Fig. 20