Leuze electronic SD4T 14 - Safety-Related Transistor Outputs

Technical data
Leuze electronic SOLID-4 57
TNT 35/7-24V
DEUTSCHENGLISHFRANÇAISITALIANOESPAÑOLNEDERLANDS
11.1.6 Safety-related transistor outputs
Note!
The output transistors perform the spark extinction. With transistor outputs, it is therefore
not necess
ary to use the spark extinction elements recommended by contactor/valve
manufacturers etc. (RC modules, varistors or recovery diodes). These extend the delay
times of inductive switching elements.
OSSDs safety
switching outputs
2 safety-related pnp semiconductor outputs,
cross circuit monitored, resistant to short
circuits
Minimum Typical Maximum
Switching voltage high active
(Uv – 1.6 V)
with ohmic load I
nominal
= 250 mA
Switching voltage low
Switching current
Leakage current
Load capacity
Load inductivity
- 80 V**)
+22 V DC
0 V
250 mA
< 5 µA
+ 2.8 V
< 20 µA
< 220 nF
< 2 H
Permissible wire resistance for load < 300 Ω*)
Permissible cable length between
receiver and load (at 0.25 mm²)
100 m
Test pulse width 30 µs 100 µs
Test pulse distance 22 ms
OSSD restart time after
beam interruption
40 ms 100 ms
OSSD response time See tables, Chapter 11.2
*) Note the additional restrictions caused by cable length and load current.
**) Fast de-excitation voltage with contactors, otherwise 0 V
Table 11.1-6: Receiver, machine interface, safety related transistor outputs