Lenze EPM−T9XX Modular system - Manual (Page 120)

8×dig. I/O compact
5
The compact system
5.1
L
5.1−6 EDSPM−TXXX−9.0−11/2009
µC
+ – X1 PE
X4 X4–
–
+
+
+
X3/2
X3/1
X3/3
X3/4
X3/5
X3/6
X3/7
X3/8
X3/9
X3/10
Z
Z
Z
Z
DC 24 V
(DC +18 … +35 V)
0
epm−t041
Fig. 5.1−5 Wiring diagram of 8×dig. I/O compact
0 Emergency−off switch
X4, X4– Terminal strips
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