EMC countermeasure

To conform to the EMC Directive when exporting to an EU country, install the filter that conforms to the EMC Directive on the inverter, and take measures acc... More Details >>

Noise from motor at low speed

It is considered to be caused by inverter PWM control. It can be suppressed by raising the PWM carrier frequency (Pr.72), but the entire noise and leakage cu... More Details >>

Inverter data cannot be read

It is considered that communication settings between the inverter and personal computer do not match. Check if settings such as communication rate and stop b... More Details >>

Meaning of OL display (2)

Yes. "OL" is displayed under speed control whenever the torque limit is reached without regard to the rated torque. More Details >>

Combination with power factor improving reactor

It cannot be combined with the power factor improving reactor. (Since the power factor is further improved by the high power factor converter, it is not requ... More Details >>

Pre-excitation, zero-speed control, and servo lock

Pre-excitation is the process to control current while a motor is stopped so that motor torque can be generated immediately. There are two methods for this p... More Details >>

Protective functions

Protective functions against the power supply fault, overcurrent, element fault, undervoltage, and transistor thermal fault (inverter protection) are availab... More Details >>

Fault output signal when inverter trips

Only the unit type SC-A□□U has fault output signals. (Terminals Y1 and SD open collector output permissible load 24 VDC 0.1 A)The box type SC-A□□B indicates ... More Details >>

What type of personal computer is required?

The PC platform can be PC98 or DOS/V as far as Windows 3.1 or Windows 95 runs smoothly, with free space of 1 MB or more on the hard disk, and memory (RAM) 1 ... More Details >>

Can the FR-DU01 be used?

Yes. (However, you need to use the parameter unit connection cable FR-CBL (option).) More Details >>