Delta VFD075CP43B-21 User Manual

Chapter 13 Warning CodesCP2000
13-12
ID No. Display on LCD Keypad Warning Name Description
22_1
Motor over-heating
(oH3) PTC
Motor over-heating warning.
The AC motor drive detects the temperature inside the
motor is too high
Action and Reset
Action level Pr.03-00=6 (PTC), PTC input level > Pr.06-30 (default=50%)
Action time Immediately act
Warning setting parameter
Error treatment: Pr.06-29
0: Warn and keep operating
1: Fault and ramp to stop
2: Fault and coast to stop
3: No warning
When Pr.06-29=0 and when the temperature is ≦ Pr.06-30 level, the oH3
warning automatically clears.
When Pr.06-29=0 (“Warning”), it automatically resets.
Reset method
When Pr.06-29=0, oH3 displays “Warning”. When the temperature is ≦
Pr.06-30 level, the oH3 warning automatically clears.
Reset condition
When the temperature is ≦ Pr.06-30 level, the oH3 warning automatically
clears.
Record N/A
Cause Corrective Actions
Motor locked Clear the motor lock status.
The load is too large
Decrease the loading.
Replace with a motor with larger capacity.
Ambien 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.
Motor fan error Replace the fan.
Operates at low-speed too long
Decrease low-speed operation time.
Change to dedicated motor for the drive.
Increase the motor capacity.
Accel./ Decel. time and working
cycle is too short
Increase setting values for Pr.01-12–01-19 (accel./ decel. time).
V/F voltage is too high
Adjust settings for Pr.01-01–01-08 (V/F curve), especially 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 PTC is properly set
and wired
Check the connection between PTC thermistor resistor and the heat protection.
Check if the setting for stall
prevention is correct
Set the stall prevention to the proper value.
Unbalance three-phase
impedance of the motor
Replace the motor.
Harmonics is too high Use remedies to reduce harmonics.

Delta VFD075CP43B-21 Specifications

General

Brand	Delta
Model	VFD075CP43B-21
Category	DC Drives
Language	English