YASKAWA V1000 Technical Manual page 179

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 a communication option or MEMOBUS/
Modbus communications (through mode). 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-oo= 10) to increase the frequency reference, the other one must be programmed as the
Down 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
Up (10) Down (11)
Open
Closed
Open
Closed
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,
3. The Up/Down function can only be used for External Reference 1 for parameter b1-01. This should be taken into account when
using 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 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.
Hold Function Selection on page
Using the Up/Down Function with Frequency Reference Limits
The 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 analog
input or parameter d2-02.
a 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 is
entered.
• If the lower limit is determined by an analog input only, the drive will accelerate to the limit as long as the Run command
and 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 drive
will accelerate to the d2-02 value when a Run command is input. Once the d2-02 value is reached, it will continue
acceleration 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 frequency
reference hold function both enabled (d4-01 = 1) and disabled (d4-01 = 0).
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
Open
Open
Closed
Closed
156.
Refer to d4-10: Up/Down Frequency Reference Limit Selection on page 161
5.7 H: Terminal Functions
Description
Hold current frequency reference
Increase frequency reference
Decrease frequency reference
Hold current frequency reference
Refer to Drive Alarms, Faults, and Errors on page
Refer to d4-01: Frequency Reference
249.
for details. When
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