Delta VFD-E Series, Руководство пользователя

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Chapter 4 Parameters 
4-131
 Related parameters: Pr.04.05(Multi-function Input Terminal (MI3)), 04.06(Multi-function Input
Terminal (MI4)), Pr.04.07(Multi-function Input Terminal (MI5)) and Pr.04.08(Multi-function Input
Terminal (MI6))
08.24
DEB Function
Factory Setting: 0
Settings 0 Disable
1 DEB Enable (return after the power recovery)
08.25
DEB Return Time
Unit: second
Settings 0~25 sec Factory Setting: 0
 The DEB (Deceleration Energy Backup) function is the AC motor drive decelerates to stop
after momentary power loss. When the momentary power loss occurs, this function can be
used for the motor to decelerate to 0 speed with deceleration stop method. When the power is
on again, motor will run again after DEB return time. (for high-speed axis application)
 Related parameter: Pr.08.04(Momentary Power Loss Operation Selection)
 Related parameter: Multi-function Output Relay(RA1, RB1, RC1).
 Example of DEB Operation Indication:
When DC BUS voltage drops lower than the DEB operation level, DEB will start to operate and
soft start relay will remain closed, the motor drive will start the linear deceleration. When the
power recovers, the motor drive will follow the setting at Pr08-24 and Pr08-25 to restart or stop
the motor.
Situation 1: Momentary power loss/ power supply too low and unstable/ power supply sliding
down because of the sudden heavy load.
Pr08-24=1 and power recovery. When the motor drive is in deceleration stage(including 0Hz
operation), and the voltage is higher than DEB operation level, the motor drive will start to
decelerate linearly until reaching minimum operation frequency. If the power recovers and
continues to the setting of 08-25, the motor drive will re-accelerate, and the dEb message on
the keypad will disappear.
DC BUS voltage of the motor drive
dEb return level
dEb operation level
Soft start relay at the power side
dEb operation
MO/Display
Output Frequency
Waiting time of dEb return
linear deceleration
linear acceleration