5.6 H: Terminal Functions NOTICE: If using baseblock in hoist applications, make sure the brake closes when the drive output is cut off by a Baseblock input. Failure to do so will result in the motor suddenly coasting when the Baseblock command is entered, causing the load to slip. Run command Baseblock input Frequency reference Output frequency Figure 5.16 Baseblock Operation During Run Setting A: Accel/Decel Ramp Hold When the digital input programmed for the Accel/Decel Ramp Hold function closes, the drive will lock ("hold") the output frequency. All acceleration or deceleration will cease, and the drive will hold the current speed.
Acceleration or deceleration will resume once the input is opened again. If the Accel/Decel Ramp Hold function is enabled (d4-01 = 1), the drive will save the output frequency to memory whenever the Ramp Hold input is closed. When the drive is restarted after stop or after power supply interruption, the output frequency that was saved will become the frequency reference (provided that the Accel/Decel Ramp Hold input is still closed). Refer to d4-01: Frequency Reference Hold Function Selection on page 84 for details. Setting F: Not Used/Through Mode Any 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 an optional MEMOBUS/Modbus communications interface . This way external sensors can be connected to unused drive digital inputs, thus reducing the need for separate PLC I/O units. Setting 10/11: Up/Down Command Using the Up/Down function allows the frequency reference to be set by two push buttons. One digital input must be programmed as the Up input (H1- = 10) to increase the frequency reference, the other one must be programmed as the Down input (H1- = 11) to decrease the frequency reference. The Up/Down function has priority over the frequency references digital operator and analog inputs (b1-01 = 0, 1).
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. Note: 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 121 . 3. The Up/Down function can only be used for external reference 1. Consider this when using Up/Down and the external reference switching function (H1- = 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 to 0 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 or the power is cycled, the drive will restart with the reference value that was saved. The value that was saved can be reset by closing either the Up or Down input without having a Run command active. Refer to d4-01: Frequency Reference Hold Function Selection on page 84 .
92 SIEP C710606 33A OYMC AC Drive – J1000 User Manual Operation Inputs Setting 8 (N.O.) Setting 9 (N.C.) Baseblock (Interrupt output) Closed Open OFF ON earch from the ency reference Baseblock ON release ON Begin Speed S previous frequ Speed S us frequ earc ency Output off, motor coasts Status Description Up (10) Down (11) Open Open Hold current frequency reference Closed Open Increase frequency reference Open Closed Decrease frequency reference Closed Closed Hold current frequency reference