6 -82Application Precautions• Frequency outputs using UP/DOWN commands are limited by the frequency reference upper and lowerlimits set in constants d2-01 to d2-03. Here, frequency references from analog frequency reference termi-nal A1 becomes the frequency reference lower limit. If using a combination of the frequency referencefrom terminal A1 and the frequency reference lower limit set in either constant d2-02 or d2-03, the largerlower limit will become the frequency reference lower limit.• If inputting the Run Command when using UP/DOWN commands, the output frequency accelerates to thefrequency reference lower limit.• When using UP/DOWN commands, multi-step operations are disabled.• When d4-01 (Frequency Reference Hold Function Selection) is set to 1, the frequency reference held usingthe UP/DOWN functions is stored even after the power supply is turned OFF. When the power supply isturned ON and the Run Command is input, the motor accelerates to the frequency reference that has beenstored. To reset (i.e., to 0 Hz) the stored frequency reference, turn ON the UP or DOWN command whilethe Run Command is ON.Connection Example and Time ChartThe time chart and settings example when the UP command is allocated to the multi-function contact inputterminal S3, and the DOWN command is allocated to terminal S4, are shown below.Fig 6.51 Connection Example when UP/DOWN Commands Are AllocatedConstant Name Set ValueH1-01 Multi-function input (terminal S3) 10H1-02 Multi-function input (terminal S4) 11Inverter0 to 10 V analogsignalForwardoperation/StopReverseoperation/StopUp commandDown commandSequencecommonFrequencyreference lower limit
