Design Guide | iC7 Series Air-cooled System Modules
Enable pre-charging and set it to MANUAL mode. Pre-charging starts by activating Digital Input 1. The AFE or grid converter module
starts and the pre-charging contactor closes. When charging is done, the main input device closes and the pre-charging contactor opens.
Charging must be performed again after a power outage.
10.3.8
Wiring Diagrams of the +24 V Supply for the Control Unit
X62
101
102
64
62
63
61
+24V input
GND
GND
GND
+24V output
+24V ext input
+24V
+24V
+24V
X62
101
102
64
62
63
61
+24V input
GND
GND
GND
+24V output
+24V ext input
OR
e3
0b
i5
60
.1
0
A
B
C
H
G
D
D
E
F
A
In24 V supply (if provided)
B
Reference design, red24 V power
C
3 A fuse
D
Control board
E
Power daisy-chaining
F
Fuse (Fuse rating depends on the complete daisychained
system configuration. Maximum 10 A.)
G
Primary external supply
H
External redundant supply
Figure 101: Wiring Diagram of Redundant Supplies
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