2.7 H: Terminal Functions
174 YASKAWA ELECTRIC TOEP C710687 03B FSDrive-MV1000 Parameter Guide
The inputs operate as shown in Table 2.22.
Table 2.22 Up, Down command
Note: 1. An oPE03 (Incorrect Contact Input Selection) error will occur when only one of the functions Up/Down is programmed for a contact
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 the FSDrive-MV1000 Instructions (Manual No. TOEP C710687
02).
3. The Up/Down function can only be used for External reference 1. Consider this when using Up/Down and the external reference
switching command (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 is
re-input or the power turned off and back on, 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 144.
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. Refer to d4-10: Up/Down Frequency Reference Limit Selection on page 148 for details.
When a Run command is applied, the lower limits work as follows:
• If the lower limit is set by 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, then 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 2.45 shows an Up/Down function example with a lower frequency reference limit set by d2-02, and the frequency
reference hold function both enabled and disabled.
Figure 2. 45
Figure 2.45 Up/Down Command Operation
Status
Drive Operation
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
Accelerates to
lower limit
Output frequency
upper limit
Lower limit
FWD run/stop
Up command
Down command
Power supply
Same
frequency
d4-01 = 1
d4-01 = 0
ON (closed)
ON (closed)
ON (closed)
ON (closed)
ON (closed)
Frequency
reference
reset
MV1000ParameterGuide_E_conditional.book 174 ページ ２０１３年１０月１１日 金曜日 午後８時１８分
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