Delta MS300 Series User Manual page 605

Chapter 14 Fault CodesMS300
ID Display on LCD Keypad
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Action Condition
Action Time
Fault Treatment Parameter
Reset Method
Reset Condition
Record
Cause
Unstable power source or the
power is off
There is any other large load
operates in the power system
Fault Name
Deceleration energy
backup error
(dEb)
Action and Reset
When Pr.07-13 is not 0, and the DC bus voltage is lower than the level of dEb.
Immediately act
N/A
When Pr.07-13 = 2 (dEb with auto-acceleration / auto-deceleration,
Auto the drive outputs the frequency after the power is restored): dEb is
automatically cleared.
When Pr.07-13 = 1 (dEb with auto-acceleration / auto-deceleration,
the drive does not output the frequency after the power is restored):
Hand
The drive stops when dEb acts and the rotation speed becomes 0 Hz,
then the drive can be reset manually.
Auto: The fault is automatically cleared.
Hand: When the drive decelerates to 0 Hz.
Yes
Check the power system.
1. Replace power system with a larger capacity.
2. Use a different power system from the large load system.
596
Fault Descriptions
When Pr.07-13 is not 0, and the power is suddenly off,
causing the DC bus voltage lower than the dEb action
level, the dEb function acts and the motor ramps to
stop. Then dEb displays on the keypad.
Corrective Actions