Input Terminal Functions6- 81Application Precautions• When d4-01 is set to 1, the output frequency on hold is stored even after the power supply is turned OFF. Ifperforming operations using this frequency after the Inverter has also been turned OFF, input the RunCommand with the Acceleration/Deceleration Ramp Hold turned ON.• When d4-01 is set to 0 and a Run Command is input while the Acceleration/Deceleration Ramp Hold isturned ON, the output frequency will be set to zero.• If you input an Acceleration/Deceleration Ramp Hold command by error when decelerating during posi-tioning, deceleration may be canceled. Raising and Lowering Frequency References Using Contact Signals (UP/DOWN)The UP and DOWN commands raise and lower Inverter frequency references by turning ON and OFF a multi-function contact input terminal S3 to S8.To use this function, set one of the constants H1-01 to H1-06 (multi-function contact input terminal S3 to S8function selection) to 10 (UP command) and 11 (DOWN command). Be sure to allocate two terminals so thatthe UP and DOWN commands can be used as a pair.The output frequency depends on the acceleration and deceleration time. Be sure to set b1-02 (Run Commandselection) to 1 (Control circuit terminal).Related ConstantsPrecautionsWhen setting and using UP and DOWN commands, observe the following precautions.Setting PrecautionsIf multi-function input terminals S3 to S8 are set as follows, operation error OPE03 (Invalid multi-functioninput selection) will occur:• Only either the UP command or DOWN command has been set.• UP/DOWN commands and Acceleration/Deceleration Ramp Hold have been allocated at the same time.Con-stantNumberName Description SettingRangeFactorySettingChangeduringOpera-tionControl Methods MEMOBUSRegis-terV/fV/fwithPGOpenLoopVec-torFluxVec-tord2-01Frequencyreferenceupper limitSet the output frequency upperlimit as a percent, taking themax. output frequency to be100%.0.0 to110.0 100.0% No A A A A 289Hd2-02Frequencyreferencelower limitSets the output frequency lowerlimit as a percentage of the max-imum output frequency.0.0 to110.0 0.0% No A A A A 28AHd2-03Master speedreferencelower limitSet the master speed referencelower limit as a percent, takingthe max. output frequency to be100%.0.0 to110.0 0.0% No A A A A 293H
