Wiring Diagrams Of The +24 V Supply For The Control Unit - Danfoss iC7 Series Design Manual

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.

Wiring Diagrams of the +24 V Supply for the Control Unit

10.3.8
B
A
H
+24V
G
+24V
A
Internal +24 V supply (if provided)
C
3 A fuse
E
Power daisy-chaining
G
Primary external supply
Figure 101: Wiring Diagram of Redundant Supplies
Danfoss Drives Oy © 2024.03
C
X62
101
+24V input
OR
102
GND
61
+24V ext input
62
GND
63
+24V output
F
64
GND
B
D
F
H
D
+24V
E
Reference design, redundant +24 V power
Control board
Fuse (Fuse rating depends on the complete daisychained
system configuration. Maximum 10 A.)
External redundant supply
AJ389643111587en-000101 / 172F6361A |
D
X62
101
+24V input
102
GND
61
+24V ext input
62
GND
63
+24V output
64
GND
117