From the Power Source:
❙ Apply the power source at the correct rated voltage to prevent damage to the AC drive.
❙ A Power Disconnect or Circuit breaker must be installed between the AC power supply and the AC drive.
Molded-Case Circuit Breaker:
❙ Utilize an appropriate circuit breaker that is suitable for the rated voltage and current ratings of the AC drive,to switch
ON/OFF the power supply to the AC drive, and as additional protection for the AC drive.
❙ Do not operate the circuit breaker to switch ON or OFF the AC drive.The circuit breaker should be used only to supply input
power and should not be used for operational sequences.
Ground Fault Circuit Breaker:
❙ To ensure personnel safety, a ground fault circuit breaker should be added to prevent false operation caused by
leakage current.
Magnetic Contactor:
❙ The Magnetic Contactor is not required for standard operation.To utilize external control, automatic restart,or breaking
controller, the magnetic contactor must be added at the primary side.
❙ Do not operate the magnetic contact to switch ON or OFF the AC drive.
Power Quality Improvement AC Reactor:
❙ If a large capacity power source is applied (over 600KVA), an additional AC reactor may be added to improve the
power factor.
Inverter:
❙ Power supply input terminals L1 and L2 are not differentiated on phase sequence.They can be arbitrarily connected.
❙ Output terminal T1,T2, and T3 should be connected to the U,V, and W terminals of the motor respectively. If motor turns in
opposite direction of the inverter command, exchange two of the three wire connections to correct this problem.
❙ Output terminal T1,T2, and T3 should never be connected to power source.Otherwise, damage to the AC drive could result.
❙ Properly ground the grounding terminal in compliance to 200V class type three grounding. (The 400V class type has
special grounding.)
2.3.4 Application and Recommendations for
Installing Auxiliary Equipment
14
FLUXMASTER 50 INSTRUCTION MANUAL
To Next Page
