Delta CP2000 Series, User Manual

Page: 487 / 868

Chapter 12 Description of Parameter Settings

CP2000
12.1-07-7
 Situation 2: Momentary power loss or power current too low and unstable, or power supply
sliding down because of sudden heavy load.
Pr.07-13=2 “dEb active, DC bus voltage returns, output frequency returns” and power
recovers. During the dEb deceleration time (includes 0 Hz run), if the power recovers higher
than dEb return level, the drive maintains the frequency for the set time of Pr.07-14 (default = 3
sec.) and then accelerates again. The dEb warning on the keypad clears automatically.
 Situation 3: Power supply unexpected shut down or power loss
Pr.07-13=1 ”dEb active, DC bus voltage returns, the output frequency does not return” and
the power does not recover. The keypad displays the “dEb” warning and stops after decelerating
to the lowest running frequency. When the DC bus voltage is lower than the Lv level, the drive
disconnects the soft start relay until the power completely runs out.