Chapter 8 Troubleshooting｜VP3000
524
When in the constant speed, the output current exceeds the over-torque
detection level (Pr. H5-06) and exceeds over-torque detection time (Pr. H5-07),
and when Pr.H5-02 is set to 1–4, the ot2 error displays.
Fault Treatment Parameter
Pr. H5-02
0: Warning & continue OPER
1: Fault & Ramp to Stop
2: Fault & Auto-Decel
3: Fault & coast to stop
4: Fault & by Quick Stop Time
When Pr. H5-00 = 0, ot2 is “Warning”. The ot2 warning automatically
clears when the output current is < (Pr. H5-06 × 95%)
It is “Fault” when Pr. H5-02 = 1–4, which must be reset manually.
Records when Pr. H5-00 = 1–4, ot2 is “Fault”
Incorrect parameter setting
Reset Pr. H5-15 and Pr. H5-16.
Mechanical failure (e.g., over-
torque, mechanical lock)
Remove the causes of malfunction.
Reduce the load.
Replace the motor with a larger capacity model.
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).
The motor capacity is too small
Replace the motor with a larger capacity model.
Overload during low-speed
operation
Decrease low-speed operation time.
Enlarge the motor capacity.
Torque compensation is too large
Adjust the torque compensation (refer to Pr. E0-16 torque compensation gain)
until the current reduces and the motor does not stall.
Improper parameter settings for
speed tracking function
(Including restart after momentary
power loss and restart after fault)
Correct the parameter settings for speed tracking.
Start the speed tracking function.
Adjust the maximum current for Pr. A3-01 speed tracking.
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