Festo EMCS-ST, Operating Instructions Manual

Page: 82 / 86

17.2.2 Digital inputs (DI)
Type EMCS-ST-42-... EMCS-ST-57-...
Nominal voltage [V DC] 24
Voltage range [V DC] −3
…
+30
Level
Logic level based on
EN 61131-2, Type 1 PNP, NPN
Min. pulse length (high or low) [ms] 20
High level (1) for PNP
1)
per input
Max. input voltage U
H max
[V] 30
Min. input voltage U
H min
[V] 15
Max. input current I
H max
[mA] 15
Min. input current I
H min
[mA] 2
Low level (0) for PNP
1)
per input
Max. input voltage U
L max
at
I
L max >
0.5/
£
0.5
[V] 5/15
Min. input voltage U
L min
[V]
–
3
Max. input current I
L max
[mA] 15
Min. input current I
L min
[mA]
–
1) The understanding of NPN is reversed. However, the values and the function are identical.
Tab. 44 Technical data, digital inputs (DI)
Fig. 31 Working ranges of the digital inputs (DI) for PNP
Technical data
82 Festo — EMCS-ST — 2020-04a