Delta VFD-EL-W Series User Manual

Chapter 6 Fault Code Information and Maintenance  VFD-EL-W
6-3
Fault Name Fault Descriptions Corrective Actions
External Base Block
1. When the external input
terminals (B.B) (MI1–MI4) are
active, the AC motor drive stops
output.
2. When changing the
communication address 2002H
bit2 = 1, the drive stops output.
The “bb” disappears once the signal source is cleared.
Over-current during
acceleration
1. Check if the screws between the drive and motor are
loosen.
2. Check for possible poor insulation between the U-V-W
terminals to the motor.
3. Increase the Acceleration Time.
4. Decrease the torque compensation setting (Pr.07.02).
5. Replace the drive with a larger capacity model.
Over-current during
deceleration
1. Check for possible poor insulation between the U-V-W
terminals to the motor.
2. Increase the Deceleration Time.
3. Replace the drive with a larger capacity model.
Over-current during constant
speed operation
1. Check for possible poor insulation between the U-V-W
terminals to the motor.
2. Check for possible motor stall.
3. Replace the drive with a larger capacity model.
External Fault
1. When multi-function input
terminals (MI1–MI4) are set to
external fault, the AC motor
drive stops output.
2. When changing the
communication address 2002H
bit0 = 1, the drive stops output.
The “EF” disappears once the signal source is cleared
and reset.
Internal EEPROM cannot be
programmed.
Return the unit to the factory.
Internal EEPROM cannot be
programmed.
Return the unit to the factory.
Internal EEPROM cannot be
read.
1. Press RESET key to reset all parameters to defaults.
2. If the fault still exists, return the unit to the factory.
Internal EEPROM cannot be
read.
1. Press RESET key to reset all parameters to defaults.
2. If the fault still exists, return the unit to the factory.
Wiring detection fault U-phase error, return the unit to the factory.
Wiring detection fault V-phase error, return the unit to the factory.
Wiring detection fault W-phase error, return the unit to the factory.
Wiring detection fault
DC bus wiring detection error, return the unit to the
factory.
Wiring detection fault Temperature sensor error, return the unit to the factory.
Auto-acceleration/deceleration
failure
1. Check if the motor is suitable for operation by the
A
C
motor drive.
2. Check if the regenerative energy is too high.
3. Check for sudden load changes.

Delta VFD-EL-W Series Specifications

General

Brand	Delta
Model	VFD-EL-W Series
Category	DC Drives
Language	English