Delta VFD300C43S-HS User Manual page 588

Chapter 14 Fault Codes and DescriptionsC2000-HS
ID* Display on LCM Keypad
61
Action level
Action time
Fault treatment parameter
Reset method
Reset condition
Record
Cause
The electromagnetic valve
operates incorrectly during Y-Δ
switch.
Incorrect parameter setting
Y-
The wiring of Δ switch function is
incorrect
ID* Display on LCM Keypad
62
Action level
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
Y-connection /
Δ-connection
An error occurs when
switch error
(ydc)
Action and Reset
1. ydc occurs when the confirmation signals of Y-connection and Δ-connection
are conducted at the same time.
2. If any of confirmation signals is not conducted within Pr. 05-25, ydc occurs.
Pr. 05-25
N/A
Manual reset
Can be reset only when the confirmation signal of Y-connection is conducted if it
is Y-connection, or when the confirmation signal of Δ-connection is conducted if
it is Δ-connection.
Yes
Check if the electromagnetic valve works normally.
If not, replace it.
Check if related parameters are all set up and set correctly.
Check the wiring.
Fault Name
When Pr. 07-13 is not 0, and the power is suddenly off,
Deceleration energy
causing the DCBUS voltage lower than the dEb action
backup error
level, the dEb function acts and the motor ramps to
(dEb)
stop. Then dEb displays on the keypad.
Action and Reset
When Pr. 07-13 is not 0, and the DCBUS voltage is lower than the level of dEb.
Immediately act
N/A
When Pr. 07-13=2 (dEb with auto-acceleration / auto-deceleration, the
Auto 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): The
Hand
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.
14-34
Fault Descriptions
Y-
Δ switches
Corrective Actions
Fault Descriptions
Corrective Actions