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Installation
MN05013005E
52
EZ…-DC-.E DC expansion units
Figure 32: Power supply on the DC expansion units
Cable protection
With EZ-AC, EZ-DC and the EZD power supply/CPU module,
provide cable protection (F1) for at least 1 A (slow).
0V
0V
24V
L01-
F1
L01+
24 V
E+ E-
R1
...
R12
J
EZ DC is protected against polarity reversal. To ensure that
EZ works correctly, ensure that the polarity of each terminal
is correct.
J
When EZ or the EZD is switched on for the first time, its
power supply circuit behaves like a capacitor. Use a
suitable device for switching on the power supply and do
not use any reed relay contacts or proximity switches.