Stall prevention

1. Stall prevention operation works when the inverter's output current exceeds the value set with Pr.22.In this case, it is considered that the current did n... More Details >>

Use of the DC reactor

It can be used in terms of the specifications. However, it is recommended to update the reactor and inverter at the same time because the DC reactor was manu... More Details >>

Encoder feedback speed accuracy

The speed variation rate is as follows: 　- Encoder feedback control: ±0.2% - Vector control: ±0.02% (mentioned in FR-A5AP Instruction Manual) More Details >>

Terminal AM calibration

1. By setting Pr.158 (Terminal AM function selection) to "21" (Reference voltage output), 10 V is output from the terminal AM.2. Read Pr.901 in the PU operat... More Details >>

Speed 15 operation

Using the inverter's input terminal, you can use up to 15 speeds.This function is supported by the current 500 series products (A500, F500, E500, and S500).U... More Details >>

Parameter writing via CC-Link

Pr.133 can be written.Since the data code numbers of parameters are duplicate, target parameters are switched by link parameter extended setting.You can acce... More Details >>

Stall prevention operation

When the inverter start signal is input, the inverter starts outputting from the starting frequency. And then, it gradually raises the frequency for accelera... More Details >>

Automatic overload control of inverter

The inverter has the current limit function. This automatically controls the frequency so that the preset current value may not be exceeded. (Note that the m... More Details >>

Connection with personal computer

Connection method for the A500 and E500 is shown in the figure below. The figure is given in an Excel file. Figure 1 More Details >>

Brake unit selection

Since the FR-A540-0.75K has a brake transistor for resistor regenerative driving inside the inverter, you do not need to use BU. Just remove the jumper from ... More Details >>