Chapter 8 Troubleshooting｜VP3000
418
Motor overheating
(oH3) PT1000
Motor overheating warning.
The AC motor drive detects the temperature inside the motor is too high
Pr. H6-03 = 4 (PT1000), and the PT1000 temperature is > Pr. H6-07
Warning Setting Parameter
Pr. H6-09
0: Warning & continue OPER
1: Fault & Ramp to Stop
2: Fault & Auto-Decel
3: Fault & coast to stop
4: Fault & by Quick Stop Time
The oH3 is automatically cleared when Pr. H6-09 = 0 and the temperature is <
Pr. H6-07 level
The oH3 is “Warning” when Pr. H6-09 = 0. When the temperature is < Pr. H6-07
level, the oH3 warning is automatically cleared.
When the temperature is < Pr. H6-07 level, the oH3 warning is automatically
cleared.
Clear the motor lock status.
Reduce the load.
Replace the motor with a larger capacity model.
Ambient temperature is too high
Change the installed place if there are heating devices in the surroundings.
Install / add cooling fan or air conditioner to lower the ambient temperature.
Motor cooling system error
Check the cooling system to make it work normally.
Operates at low speed too long
Decrease low-speed operation time.
Change to dedicated motor for the drive.
Enlarge the motor capacity.
Accel./Decel. time and working
cycle are too short
Increase the setting values for Pr. C2-00–Pr. C2-07 (accel./decel. time)
Adjust settings for Pr.E0-03–E0-14 (V/F curve). Adjust the setting value for the
mid-point voltage (if the mid-point voltage is set too small, the load capacity
decreases at low speed).
Check if the motor rated current
matches the motor nameplate
Configure the correct rated current value of the motor again.
Check if the PT1000 is properly
set and wired
Check the connection between PT1000 thermistor resistor and the heat
protection.
Check if the setting for stall
prevention is correct
Set the stall prevention to the proper value.
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