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

4PARAMETERSAdjust the output torque (current) of the motor(4) Set multiple stall prevention operation levels (Pr. 48, Pr. 49, Pr. 114, Pr. 115)⋅ Setting "9999" in Pr. 49 Second stall prevention operation frequency and turning the RT signal on make Pr. 48 Second stallprevention operation current valid.⋅ In Pr. 48 (Pr. 114), you can set the stall prevention operation level at the output frequency from 0Hz to that set in Pr. 49(Pr. 115).During acceleration, however, the operation level is as set in Pr. 22.⋅ This function can also be used for stop-on-contact or similar operation by decreasing the Pr. 48 (Pr. 114) setting toweaken the deceleration torque (stopping torque).⋅ Pr. 114 and Pr. 115 are made valid when the X9 signal is on. For the terminal used for X9 signal input, set "9" in any ofPr. 178 to Pr. 189 input terminal function selection to assign the X9 signal function.Stall preventionoperation currentPr. 48Pr. 114During accelerationDuring deceleration/constant speedPr. 49Pr. 115Running frequencyPr. 49SettingPr. 115Setting0(initial value)0.01Hz to 400Hz9999 *2Settingcan notbemade.OperationThe second (third) stall prevention operation is notperformed.The second (third) stall prevention operation isperformed according to the frequency.*1The second (third) stall prevention function isperformed according to the RT signal.RT signal ON ... Stall level Pr. 48RT signal OFF ... Stall level Pr. 22*1 The smaller setting of the stall prevention operation levels set in Pr. 22 and Pr. 48has a higher priority.*2 When Pr. 868 = "4" (Stall prevention operation level analog input), the stallprevention operation level also switches from the analog input (terminal 1 input)to the stall prevention operation level of Pr. 48 when the RT signal turns on.(The second stall prevention operation level cannot be input in an analog form.)Set frequency exceeds Pr. 49 (Pr. 115)Set frequency is Pr. 49 (Pr. 115) or lessSetfrequencyPr. 49(Pr. 115)StallpreventionlevelOutputfrequency (Hz)Pr. 22usedOutputfrequencyTimePr. 48(Pr.114)usedOutputfrequency (Hz)Pr. 49(Pr. 115)SetfrequencyPr. 22usedOutputfrequencyTimePr. 48(Pr. 114)usedREMARKS⋅ When Pr. 49 ≠ "9999" (level changed according to frequency) and Pr. 48 = "0%", the stall prevention operation level is 0% at orhigher than the frequency set in Pr. 49.⋅ In the initial setting, the RT signal is assigned to the RT terminal. By setting "3" in any of Pr. 178 to Pr. 189 (input terminalfunction selection), you can assign the RT signal to the other terminal.CAUTION⋅ Changing the terminal assignment using Pr. 178 to Pr. 189 (input terminal function selection) may affect the other functions. Pleasemake setting after confirming the function of each terminal.⋅ The RT(X9) signal acts as the second (third) function selection signal and makes the other second (third) functions valid. (Referto page 210)137