Wiring the standard device
Important notes
Protection of persons
5
5.1
5.1.1
5.1-2
EDSVF9333V EN 3.0-06/2005
The terminals X1 and X5 have a double (reinforced) insulation according to
EN50178. The protection against accidental contact is ensured without any
further measures.
Danger!
ƒ Terminals X3, X4, X6, X7, X8, X9, X10, X11 have a single basic
insulation (single insulating distance).
ƒ Protection against accidental contact in case of a defective
isolating distance is only guaranteed through external
measures, e.g. double insulation.
ƒ If an external DC 24 V voltage source is used, the insulation
level of the controller depends on the insulation level of the
voltage source.
59
39
A1 A2
A3
A4
E1 E2
E3
E4
E5
ST1 ST2
28
L1
24 VDC
N
X1
X5
X3
X4
X6 X8 X9 X10
X11
W
V
U
PE
PE
L1
L2
L3
+U
G
-U
G
9300VEC050
Fig. 5.1-1 Electrical isolation between power terminals, control terminals and housing
Double (reinforced) insulation
Basic insulation
Replace defective fuses with the prescribed type only when no voltage is
applied.
Make a safety disconnection between the controller and the mains only via
a contactor at the input side.
Electrical isolation
Replacement of defective
fuses
Mains disconnection
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