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Schaffner Group
User and Installation Manual
Output filter FN5420 and RWK5420
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3.9 Functional diagram
Figure 23 Functional sine wave filter FN5420
Figure 24 Functional diagram dv/dt reactor RWK5420
Filter terminals
Drive U1/V1/W1
3 terminal blocks
Motor U2/V2/W2
3 terminal blocks
Signal TS
Connecting terminals to thermal switch NC 180°C (UL-
approved) to detect overload in chokes
PE
Protective earth. Threaded stud with washer and nut
Function blocks
Chokes L
Power magnetic components incl. temperature sensors
Capacitors C
Power capacitors incl. discharge resistors
Fan
Field replaceable fan for choke air cooling
Power supply
Internally generate 24 V DC source for fan supply