Delta VFD370C43S-HS User Manual

Chapter 14 Fault Codes and DescriptionsC2000-HS
14-11
ID* Display on LCM Keypad Fault Name Fault Descriptions
14
Low-voltage at stop
(LvS)
1. DC BUS voltage is lower than Pr. 06-00 setting
value at stop
2. Hardware failure in voltage detection
Action and Reset
Action level Pr. 06-00 (Default = depending on the model)
Action time Immediately act when DCBUS voltage is lower than Pr. 06-00
Fault treatment parameter N/A
Reset method
Manual / auto:
Frame D0
–D = Lv level + 60V
DC
+ 500ms
Frame E and above = Lv level + 80V
DC
+ 500ms
Reset condition 500ms
Record Yes
Cause Corrective Actions
Power-off Improve power supply condition.
Incorrect drive models Check if the power specification matches the drive.
Power voltage changes
Adjust voltage to the power range of the drive.
Cycle the power after checking the power. If LvS error still exists, return to the
factory for repair.
Start up the motor with large
capacity
Check the power system.
Increase the capacity of power equipment.
DC BUS Install DC reactor(s).
ID* Display on LCM Keypad Fault Name Fault Descriptions
15
Phase loss protection
(OrP)
Phase loss of power input
Action and Reset
Action level DC BUS is lower than Pr. 07-00, and DC BUS ripple is higher than Pr. 06-52
Action time N/A
Fault treatment parameter Pr. 06-53
Reset method Manual reset
Reset condition Immediately reset when DCBUS is higher than Pr. 07-00
Record Yes
Cause Corrective Actions
Phase loss of input power Correctly install the wiring of the main circuit power.
Single phase power input to
three-phase model
Choose the model whose power matches the voltage.
Power voltage changes
If the main circuit power works normally, verify the main circuit.
Cycle the power after checking the power, if OrP error still exists, return to the
factory for repair.
Loose wiring terminal of input
power
Tighten the terminal screws according to the torque described in the user
manual.
The input cable of three-phase
power is cut off
Wire correctly.
Replace the cut off cable.
Input power voltage changes too
much
Verify the setting value for Pr. 06-50 Time for Input Phase Loss Detection and
Pr. 06-52 Ripple of Input Phase Loss
Unbalanced three-phase of input
power
Check the power three-phase status.

Delta VFD370C43S-HS Specifications

General

Brand	Delta
Model	VFD370C43S-HS
Category	DC Drives
Language	English