Delta MH300 Series - Page 748

Chapter 14 Fault CodesMH300
14-21
ID No. Display Fault Name Description
17
Over-heat key
components (oH2)
The drive has detected the key components are
over heat
Action and Reset
Action condition Refer to the table below for oH2 level of each models
Action time
The oH2 fault occurs when the temperature
sensor of key components
detects the temperature is higher than the protection level for 100ms.
Fault treatment parameter N/A
Reset method Manual reset
Reset condition
The drive auto-
resets when the temperature sensor of key components
detects the temperature is lower than oH2 error level minus (–) 10°C
Record Yes
Cause Corrective Actions
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.
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
braking resistors, in the surroundings.
4.
Install / add cooling fan or air conditioner to lower the temperature
inside the cabinet.
Check if there is any
obstruction on the heat sink or
if the fan is running.
Remove the obstruction or replace the cooling fan.
Insufficient ventilation space Increase ventilation space of the drive.
Check if the drive matches the
corresponding load
1. Reduce the load
2. Reduce the carrier
3. Replace the drive with a larger capacity model.
The drive has run 100% or
more than 100% of the rated
output for a long time
Replace the drive with a larger capacity model.
Unstable power Install reactor(s)
Load changes frequently Reduce load changes
Voltage
Model
(NOTE: x＝A orE)
oH1 (ºC)
oH2 (ºC)
oH warning
oH1 warning = Pr.06-15 (ºC)
Single-phase
_115V
VFD1A6MH11x□□A□ 95 -
oH1 warning = oH1 – 5
oH2warning = oH2 – 5
VFD2A5MH11x□□A□ 100 -
VFD5A0MH11x□□A□ 100 -
Single-phase
_230V
VFD1A6MH21x□□A□ 110 -
VFD2A8MH21x□□A□ 110 -
VFD5A0MH21x□□A□ 110 -
VFD7A5MH21x□□A□ 110 -
VFD11AMH21x□□A□ 110 -