gefran SIEIDrive ADV100 Functions Description And Parameters List page 96

Example 3)
The drive controls a deceleration with the ramp set in Powerloss decel time.
The drive automatically controls the DC link voltage and prevents the Overvoltage alarm.
If the mains supply is not restored close to a speed of zero, when there is insufficient regenerated power, the Under-
voltage alarm is generated and the drive may switch itself off.
Drv enable
Power supply
Vdc
Speed ref
Speed
Speed ref
Powerloss
Next active
Powerloss
Ramp down
Powerloss
Next ratio
Example 4)
The drive controls a deceleration with the ramp set in Powerloss decel time.
The drive automatically controls the DC link voltage and prevents the Overvoltage alarm.
If the mains supply is restored and the Mains voltage OK signal is applied, the drive immediately stops the decelera-
tion ramp and executes the acceleration ramp set in Powerloss accel time to pass to the set reference.
96
Restart and mains supply not restored
Restart and mains supply not restored
The mains supply is not restored while the function is enabled
Speed
Restart and mains supply restored
The drive switches itself off if
the power supply is not restored
ADV100 • Functions description and parameters list
PowerLoss_04.vsd