Lenze EPM−T9XX Modular system - Manual (Page 128)

16×dig. I/O compact (single−wire conductor)
5
The compact system
5.2
L
5.2−6 EDSPM−TXXX−9.0−11/2009
X4/1
X4/2
X3/10
X3/9
X3/8
X3/7
X3/6
X3/5
X3/4
X3/3
X3/2
X3/1
X4/3
X4/4
X4/5
X5/6
X4/7
X4/8
X4/9
X4/10
Z
Z
Z
Z
Z
Z
+ – X1 PE
µC
+
+
+
–
+
DC 24 V
(DC +18 … +35 V)
0
epm−t052
Fig. 5.2−5 Wiring diagram of 16×dig. I/O compact (single−wire conductor)
0 Emergency−off switch
Z Load
(
Stop!
If the voltage supply (DC 24 V) fails, the module will malfunction:
l Switched outputs carry voltage if one input is assigned with a
HIGH level,
l The module can be destroyed since the outputs are not
resistant to short circuits anymore.
The emergency−off switch ensures that when being operated the
outputs do not carry any voltage and the inputs are not assigned
with a HIGH level.
Connection