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FT50
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9 System Device Selection
9.1 FT50 series Frequency Converter Connection Diagram
When using the FT50 series frequency converter to control an asynchronous motor, it is
necessary to install various electrical components on the input and output sides of the
frequency converter to ensure the safety and stability of the system. The system configuration
is shown in the Figure 9-1.
Three-phase AC
Power Supply
Circuit Breaker
Fuse
Contactor
Filter
Input Reactor
PE
PE
To prevent electric shock, the
motor and frequency converter
must be well grounded.
R S T BR +
-
U V W PE
Braking Unit
Braking
Resistor
Braking
Resistor
Upper Machine
RJ45 Interface
Output Reactor
Figure 9-1 FT50 series frequency converter connection diagram
Table 9-1 Electrical components description
Name
Installation description
Function description
Contactor
Between the circuit breaker
and the input side of the
frequency converter
When powering on and off the frequency
converter,
avoid
frequent
power-on
and
power-off operations on the frequency converter
through the contactor (the interval is not less
than one hour), or directly the operation to start
it.
