Regenerative power flow

If all inverters are in regenerative operation, the regenerative power is regenerated to the power supply. If one of the inverters is power driving, the rege... More Details >>

Influence on noise level

By using the reactors 1 and 2 as well as the outside box supplied with the high power factor converter, while the noise may increase or decrease depending th... More Details >>

What happens if the supplied reactor and outside box are not used?

Harmonics cannot be suppressed (controlled) correctly and noise cannot be removed. Be sure to connect the supplied reactor and outside box to the inverter. More Details >>

Using a higher grade power factor improving reactor

Using a reactor under a load lighter than the rated capacity slightly spoils its effect in improving the power factor.Therefore, you should use a reactor wit... More Details >>

Phase detection terminal

The phase detection terminal has been provided with units produced since December 1999. You can identify these units with the serial number "N9Z○○○○○○" or la... More Details >>

Power factor improving reactor

Your understanding about the AC and DC reactors is correct. For the harmonics suppression effect obtained by using both types of reactors, refer to the table... More Details >>

Brake unit selection

1. The BU brake unit does not have the fault output.Multiple BU brake units can be connected in parallel.2. Power supply voltage 480 V- What resistance value... More Details >>

FR-HC2

It controls the charging current immediately after the power is ON. (as a MC (magnetic contactor) for the charging current limit circuit, etc) More Details >>

TH3 terminal of the MT-BR5

The resistor unit MT-BR5 manufactured in February 2016 or later has output terminal TH3 (NC contact) as a fault output terminal. More Details >>

System configuration

The whole system consists of the power supply, molded case circuit breaker, high power factor converter, inverter, and motor. The high power factor converter... More Details >>