Delta CP2000 Series, User Manual

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Chapter 13 Warning Codes

CP2000
13-13
ID No. Display on LCD Keypad Warning Name Description
22_2
Motor over-heating
(oH3) PT100
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=11 (PT100), PT100 input level > Pr.06-57 (default=7V)
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.06-56 level, the oH3
warning automatically clears.
If the temperature is between Pr.06-56 and Pr.06-57, the frequency outputs
according to the operating frequency setting for Pr.06-58.
Reset method
When Pr.06-29=0, oH3 displays “Warning”. When the temperature is
<
Pr.06-56
level, the oH3 warning automatically clears.
Reset condition
When the temperature is
<
Pr.06-56 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 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 the setting values for Pr.01-12–01-19 (accel./ decel. time).
V/F voltage is too high
Adjust the 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 PT100 is properly set
and wired Check the connection between PT100 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.