Setting F: Not Used/Through ModeAny digital input that is not used should be set to F. When set to “F”, an input does not trigger any function in the drive.Setting F, however, still allows the input status to be read out by a PLC via a communication option or MEMOBUS/Modbus communications (through mode). This way external sensors can be connected to unused drive digital inputs, thusreducing the need for separate PLC I/O units.Setting 10/11: Up/Down CommandUsing the Up/Down function allows the frequency reference to be set by two push buttons. One digital input must beprogrammed as the Up input (H1-oo= 10) to increase the frequency reference, the other one must be programmed as theDown input (H1-oo= 11) to decrease the frequency reference.The Up/Down function has priority over the frequency references digital operator, analog inputs, and pulse input (b1-01= 0, 1, 4). If the Up/Down function is used, then references provided by these sources will be disregarded.The inputs operate as shown in the table below.Status DescriptionUp (10) Down (11)Open Open Hold current frequency referenceClosed Open Increase frequency referenceOpen Closed Decrease frequency referenceClosed Closed Hold current frequency referenceNote: 1. An oPE03 alarm will occur when only one of the functions Up/Down is programmed for a digital input.2. An oPE03 alarm will occur if the Up/Down function is assigned to the terminals while another input is programmed for the Accel/Decel Ramp Hold function. For more information on alarms, Refer to Drive Alarms, Faults, and Errors on page 249.3. The Up/Down function can only be used for External Reference 1 for parameter b1-01. This should be taken into account whenusing Up/Down and the external reference parameter b1-15 switching command (H1-oo = 2).Using the Up/Down Function with Frequency Reference Hold (d4-01)• When the frequency reference hold function is disabled (d4-01 = 0), the Up/Down frequency reference will be reset to0 when the Run command is cleared or the power is cycled.• When d4-01 = 1, the drive will save the frequency reference set by the Up/Down function. When the Run command orthe power is cycled, the drive will restart with the reference value that was saved. The value that was saved can be resetby closing either the Up or Down input without having a Run command active. Refer to d4-01: Frequency ReferenceHold Function Selection on page 156.Using the Up/Down Function with Frequency Reference LimitsThe upper frequency reference limit is determined by parameter d2-01.The value for the lower frequency reference limit depends on the setting of parameter d4-10 and can be set by an analoginput or parameter d2-02. Refer to d4-10: Up/Down Frequency Reference Limit Selection on page 161 for details. Whena Run command is applied, the lower limits work as follows:• If the lower limit is set by parameter d2-02 only, the drive will accelerate to this limit as soon as a Run command isentered.• If the lower limit is determined by an analog input only, the drive will accelerate to the limit as long as the Run commandand an Up or Down command are active. It will not start running if only the Run command is on.• If the lower limit is set by both an analog input and d2-02, and the analog limit is higher than the d2-02 value, the drivewill accelerate to the d2-02 value when a Run command is input. Once the d2-02 value is reached, it will continueacceleration to the analog limit only if an Up or Down command is set.Figure 5.48 shows an Up/Down function example with a lower frequency reference limit set by d2-02 and the frequencyreference hold function both enabled (d4-01 = 1) and disabled (d4-01 = 0).5.7 H: Terminal FunctionsYASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual 1795 Parameter Details
