Danfoss VLT FCD 302 Operating Manual page 25

Operating Guide | VLT® Decentral Drive FCD 302
Circuit breaker and service switch
The following illustrations Figure 14
1
L1
L1 1
L2
L2 3
L3
L3 5
NO
PE 33
NC
41
Figure 14: Circuit Breaker and Mains Disconnect
1 Looping terminals
1
1
L1
3
L2
L3
7
PE
Figure 15: Service Switch at Mains with Looping Terminals
1 Looping terminals
4.2 Block Diagram of the Drive
1 2 3
8
Figure 16: Block Diagram
1
Mains input
3
DC bus
5
Capacitor bank
7 Output to motor
1. Mains input: 3-phase AC mains supply to the drive.
2.
Rectifier: The rectifier bridge converts the AC input to DC current to supply inverter power.
Danfoss A/S © 2025.04
and Figure 15 are for FCD 302 large unit only.
2
T1 2 L1 U
91 96
T2 4 L2 V
92 97
T3 6 L3 W
93 98
NO 34
12
NC 42
27
2 L1 U
91 96
L2 V
4
92 97
6 L3 W
93 98
8
12
27
6
4
5
2 Circuit breaker
U
V
W
7
M
2
Rectifier
4
DC reactors
6
Inverter
8 Control circuitry
Electrical Installation
AQ267036816112en-000301 / 130R0208 | 25