Yaskawa AC Drive Z1000 Bypass Technical Manual Manual do Utilizador descarregar pdf (Página 175)

Setting 0: No Fault Output

Auto-Restart - Cancel Early

Fault output disabled (L5-02 = 0)

Run command

Fault condition

Fault display

Fault digital output

Output Frequency

(U1-02)

L5-04

Figure 5.46 Auto Restart Cancel Early

Setting 1: Fault Output Is Set

L5-03: Time to Continue Making Fault Restarts (enabled only when L5-05 = 0)

Although the drive will continue to execute fault restarts, this parameter will cause a fault if a fault restart cannot occur after

the time set to L5-03 passes.

All major faults will cause the drive to stop. For some faults it is possible to configure the drive to attempt a restart automatically.

After the fault occurs, the drive baseblocks for L2-03 seconds. After the baseblock is removed, the drive checks if a fault

condition still exists. If no fault condition exists, the drive will attempt to restart the motor. If the restart is successful, the drive

performs a Speed Search (Regardless of the status of b3-01 "Speed Search Selection") from the set speed command and the

Auto Restart Attempts count is increased by one. Even if the restart fails, the restart count is increased by one as long as the

drive attempted to rotate the motor. The restart count will not be incremented if the restart is not attempted due to a continuing

fault condition, (i.e., an ov fault). The drive waits L5-03 seconds before attempting another restart.

No. Name Setting Range Default

L5-03 Time to Continue Making Fault Restarts 0.00 to 600.0 s 180.0 s

Run

Fault

Attempts

Voltage

remains high

for a long time,

then reset (1)

Drive trips on oC,

resets (2) and tries

again but motor still

shorted, trips again.

oC condition

gone, resets (3)

and runs.

Time

L2-03 L2-03 L2-03

L5-03

Count

1 2 3

oC oC

trying each

L5-03 seconds

successful successful

try but

failed

Figure 5.47 Automatic Restart Timing Diagram

The auto restart count is reset back to 0 if any of the following occur:

• No further faults for 10 minutes after the last retry.

• The drive power is turned off (the drive must be without power long enough to let control power dissipate).

5.9 L: Protection Functions

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