Reer PI M30 NF K Manual De Instrucciones Original página 31

Logic "1"
Logic "0"
*) pull-down current typ� 30 mA
The interface corresponds to interface type C class 0 according to the ZVEI posi-
tion paper "Klassifizierung binärer 24-V-Schnittstellen mit Testung im Bereich der
Funktionalen Sicherheit" (Classification of binary 24V interfaces tested with regard
to functional safety)�
9.1.4 Cross fault / short circuit
• A cross fault between both outputs (A1 and A2) is detected by the fail-safe
sensor and results in the outputs (OSSD) being switched off at the next safety
request� The outputs A1 and A2 remain switched off until the error has been
removed or a voltage reset has been carried out�
• A cross fault (short circuit) between one of the two outputs (A1 or A2) and the
supply voltage results in the other output (A2 or A1) being switched off in case
of a safety request�
9.2 Operating mode
The length of the preceding undamping determines whether the yellow LED
comes on with a delay (→ 9.2.1) or without delay (→ 9.2.2) when a target moves
into the enable zone� In any case, the outputs switch on without delay�
In case of undamping the outputs switch off and the yellow LED goes out without
delay�
In case of damping in the close range the outputs switch off immediately whereas
the yellow LED goes out with a delay of approx� 2 s�
When the LED goes out the outputs are maintained in the safe state ("0")� Thus,
switching on again in the enable zone is not possible� Enabling is done by un-
damping (> 30 mm) of more than 2 s or by interrupting the voltage (→ 5.2 Protec-
tion against simple defeating)�
≥ 15 V
≥ 11 V
≤ 5 V
2���15 mA
15���30 mA
leakage current 0�2 mA *)
UK
11