FR-A701 INSTRUCTION MANUAL (Applied) - Automation Systems ...

Frequency/torque setting by analoginput (terminal 1, 2, 4)(2) Override function (Pr. 252, Pr. 253)⋅ Use the override function to change the main speed at a fixed ratio.⋅ Set any of "4, 5, 14, 15" in Pr. 73 to select an override.Forward Inverter ⋅ When an override is selected, the terminal 1 or terminal 4 is used for the main speedrotationSTFSD10setting and the terminal 2 for the override signal. (When the main speed of theterminal 1 or terminal 4 is not input, compensation made by the terminal 2 becomesinvalid.)Override2⋅ Using Pr. 252 and Pr. 253, set the override range.setting5⋅ How to find the set frequency for overrideMain (+) 1Compensation amount (%)speed (-)Set frequency (Hz) = Main speed set frequency (Hz) ×100(%)Override connection diagramMain speed set frequency (Hz): Terminal 1, 4 input, multi-speed settingCompensation amount (%): Terminal 2 input200Example)When Pr. 73 = "5"The set frequency changes as shown below according to theterminal 1 (main speed) and terminal 2 (auxiliary) inputs.Pr.252Pr.253Override value (%)15010050Initial value(50% to 150%)00V 2.5V(5V)5V(10V)Voltage across terminals 2-5Set frequency (Hz)906045301500 2.5 5Terminal 1 input voltage (V)Terminal 2 5VDCinput(150%)Terminal 2 2.5VDCinput(100%)Terminal 2 0Vinput(50%)⋅CAUTIONWhen the Pr. 73 setting was changed, check the voltage/current input switch setting. Different setting may cause a fault, failureor malfunction. (Refer to page 259 for setting.)REMARKS⋅ The AU signal must be turned on to use the terminal 4.⋅ When inputting compensation to multi-speed operation or remote setting, set "1" (compensation made) in Pr. 28 Multi-speed inputcompensation selection. (Initial value is "0")♦ Parameters referred to ♦Pr. 28 Multi-speed input compensation selection Refer to page 152Pr. 73 Analog input selection Refer to page 259264