2 Product description
11
2.1.2
Safety inputs and test pulse outputs
The SFB-PN-IRT-8M12-IOP has two safety inputs and two test pulse outputs for
the supply of dry contacts at each of the 8 device ports X0 - X7.
These safety inputs are usable for:
1 channel safety switches (1oo1) with dry NC contacts
−
Cross fault monitoring to all other safety inputs of the fieldbox
−
Configurable debounce filter / stable time filter for the input signal
−
Supply contact by test pulse outputs with test pulse duration 1 ms
and test pulse interval 500 ms
2 channel safety switches (1oo2) with dry NC contacts
−
Cross fault monitoring to all other safety inputs of the fieldbox
−
Configurable debounce filter / stable time filter for the input signals
−
Supply contacts by test pulse outputs with test pulse duration 1 ms
and test pulse interval 500 ms
2 channel Safety switches (1oo2) with 24 V-PNP solid state outputs (OSSDs)
−
No cross fault monitoring
of the device connection cables by the
fieldbox
−
Configurable debounce filter / stable time filter for the input signals
−
Supply safety inputs of the safety switchgear with 24 VDC
without test
pulses
−
When the OSSD is switched on,
negative test pulses
with a length of
10 µs to 1 ms and an interval of 20 ms to 120 s must be sent.
WARNING
For safety switchgear with electronic OSSDs, cross fault detection of the device
connection cable must be carried out by the safety switchgear!
2.1.3
Safety outputs
The SFB-PN-IRT-8M12-IOP has a safety digital output at each of the 8 device
ports X0 - X7 for controlling loads up to 0.8 A and a configurable safety signal
output for controlling 2-channel safety inputs up to 15 mA.
Safety output via 1 wire (digital output DO)
−
Safety digital output (PP switching) up to PL d, for controlling
e.g. solenoids in interlocks
−
Tested output, short-circuit and overload protected
