Technical data
Leuze electronic
SOLID-4
57
T
N
T
35/
7-
24V
DEUTSCH
ENGLISH
FRANÇAIS
IT
ALIANO
ESPAÑO
L
NEDERLANDS
11.1.6
Safety-related transistor outputs
Note!
The output transistors perform the spark extinction. With transistor outputs, it is therefore
not necessary 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
