Delta EB3000 Series User Manual page 339

Chapter 9 Warning and Fault CodesEB3000
Abbreviated
ID No.
Warning Code
9 oH1
Action condition
Action time
Warning treatment
parameter
Reset method
Reset condition
Record
Cause
Check if the ambient temperature or
temperature inside the cabinet is
too high, or if there is obstruction in
the ventilation hole of the control
cabinet.
Check if there is any obstruction on
IGBT or if the fan is running
Insufficient ventilation space
Check if the drive matches the
corresponded loading
The drive has run 100% or more of
the rated output for a long time
Models / Phase
230V /
One-phase
460V /
Three-phase
Display on
Warning Name
KPED-LE02
IGBT overheating
Pr.04-55 IGBT Overheat Warning (oH1)
Immediately act
N/A
Auto reset
Resets when temperature reaches the oH1 Reset Level shown in the table below
No
1. Check the ambient temperature.
2. Regularly inspect the ventilation hole of the control cabinet.
3. Change the installed place if there are heating objects, such as brake
resistors, in the surroundings.
4. Install/add cooling fan or air conditioner to lower the temperature inside the
cabinet.
Remove the obstruction or replace the cooling fan.
Increase ventilation space of the drive.
1. Decrease loading.
2. Decrease the carrier.
3. Replace with a drive with larger capacity.
Replace with a drive with larger capacity.
Frame Model Name
VFD022ED21B
A
VFD037ED21B
VFD040ED43B
A VFD055ED43B
VFD075ED43B
VFD110ED43B
B VFD150ED43B
VFD185ED43B
If IGBT temperature is higher than oH1 Fault
Level shown in the table below when drive
warning detects overheating of IGBT, keypad displays
oH1 fault, not oH1 warning.
Action and Reset
Corrective Actions
oH1 Fault Level
85
90
90
90
95
100
110
110
9-8
Description
oH1 Warning Level oH1 Reset Level
oH1 Fault Level-5
OH1 Warning
or
Pr.04-55
<Go to List of Warning
Level -5
Codes>