YASKAWA Inverter Spécifications télécharger pdf (Page 97)

• 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 88.

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 can be set by an analog input or parameter d2-02. When 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 5.17 shows an Up/Down function example with a lower frequency reference limit set by d2-02 and the frequency

reference hold function enabled/disabled.

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

Frequency

reference

reset

Figure 5.17 Up/Down Command Operation

Setting 14: Fault Reset

Whenever

the drive detects a fault condition, the fault output contact will close and the drive’s output will shut off. The motor

then coasts to stop (specific stopping methods can be selected for some faults such as L1-04 for motor overheat). Once the

Run command is removed, the fault can be cleared by either the RESET key on the digital operator or by closing a digital

input configured as a Fault Reset (H1-oo = 14).

Note: Fault Reset commands are ignored as long as the Run command is present. To reset a fault, first remove the Run command.

Setting 15/17: Fast-stop (N.O./N.C.)

The Fast-stop function operates much like an emergency stop input to the drive. If a Fast-stop command is input while the

drive is running, the drive will decelerate to a stop by the deceleration time set to C1-09 (Refer to C1-09: Fast-stop Time on

page 81). The drive can only be restarted after is has come to a complete stop, the Fast-stop input is off, and the Run command

has been switched off.

•

To trigger the Fast-stop function with a N.O. switch, set H1-oo = 15

•

To trigger the Fast-stop function with a N.C. switch, set H1-oo = 17

Figure 5.18 shows an operation example of Fast-stop.

5.6 H: Terminal Functions

YASKAWA ELECTRIC SIEP C710606 31A YASKAWA AC Drive – J1000 Technical Manual

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