Operating Instructions

Warning Codes
Digital Keypad RT-KEYPAD
274 | 443
Warning setting parameter
Pr.06-09 Over-torque Detection Selection (Motor 2) =1 or 3
0: No function
1: Continue operation after over-torque detection during constant speed operation
2: Stop after over-torque detection during constant speed operation
3: Continue operation after over-torque detection during RUN
4: Stop after over-torque detection during RUN
Reset method
When the output current < Pr.06-10, the Ot2 warning automatically clears
Reset condition
When the output current < Pr.06-10, the Ot2 warning automatically clears
Record
N/A
Cause
Corrective Actions
Incorrect parameter setting
Configure the settings for Pr.06-10 and Pr.06-11
Mechanical error (e.g. mechanical lock
due to over-torque)
Remove the causes of malfunction.
The load is too large
Decrease the loading.
Replace with a motor with larger 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 V/F curve (Motor 2, Pr.01-35–01-42), 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).
The motor capacity is too small
Replace with a motor with larger capacity.
Overload during low-speed operation
Decrease the loading during low-speed operation.
Increase the motor capacity.
The torque compensation is too large
Adjust the torque compensation value (Pr.07-71 torque compensation gain) until the output
current decreases and the motor does not stall.
Improper parameter settings for the speed
tracking function (including restart after
momentary power loss and restart after
fault)
Correct the parameter settings for speed tracking.
Start speed tracking function.
Adjust the maximum current for Pr.07-09 speed tracking.
ID No.
Display on LCD Keypad
Warning Name
Description
22_1
Motor over-heating (oH3)
PTC
Motor overheating 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 PTC level (default=50%)
Action time
Immediately act
Warning setting parameter
Error treatment: Pr.06-29
0: Warn and continue operation
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.