Delta MS300 Series User Manual page 572

ID Display on LCD Keypad
16
Action Condition
Fault Treatment Parameter
Reset Method
Reset Condition
Record
Cause
Check if the ambient temperature
or temperature inside the control
cabinet is too high, or if there is
obstruction in the ventilation hole
of the control cabinet.
Check if there is any obstruction
on the heat sink or if the fan is
running.
Insufficient ventilation space
Check if the drive matches the
corresponding load
The drive has run 100% or more
than 100% of the rated output for a
long time
oH1 Warning Condition
Voltage
One-phase_115V
One-phase_230V
Three-phase_230V
Fault Name
IGBT overheating
(oH1)
Action and Reset
Depending on the model power, refer to Table 1 below.
When the setting for Pr.06-15 is higher than the oH1 level, oH1 error occurs
instead of oH1 warning. An IGBT overheating error occurs, and the drive stops.
N/A
Manual reset
Reset only when IGBT temperature is lower than oH1 error level minus (-) 10°C
Yes
1. Check 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. Reduce the load
2. Reduce the carrier wave
3. Replace the drive with a larger capacity model.
Replace the drive with a larger capacity model.
Model
(NOTE: x＝A or E)
VFD1A6MS11x□□AA
VFD2A5MS11x□□AA
VFD4A8MS11x□□AA
VFD1A6MS21x□□AA
VFD2A8MS21x□□AA
VFD4A8MS21x□□AA
VFD7A5MS21x□□AA
VFD11AMS21x□□AA
VFD1A6M23x□□AA
VFD2A8MS23x□□AA
VFD4A8MS23x□□AA
VFD7A5MS23x□□AA
VFD11AMS23x□□AA
VFD17AMS23x□□AA
Fault Descriptions
IGBT temperature exceeds the protection level.
Corrective Actions
oH1 (ºC)
95
95
100
110
100
110
105
115
100
100
105
105
95
105
563
Chapter 14 Fault CodesMS300
oH Warning
oH1 Warning = Pr.06-15 (ºC)
oH1 Warning = oH1 – 5