Delta VP3000 Series - Page 532

Chapter 8 Troubleshooting｜VP3000
523
ID No.
Fault Name
Descriptions
26
Over-torque 1
(ot1)
When output current exceeds the over-torque detection level (Pr. H5-04) and
exceeds over-torque detection time (Pr. H5-05), and when Pr.H5-00 is set to 1–
4, the ot1 error displays.
Action and Reset
Action Condition
Pr. H5-04
Action Time
Pr. H5-05
Fault Treatment Parameter
Pr. H5-00
0: Warning & continue OPER
1: Fault & Ramp to Stop
2: Fault & Auto-Decel
3: Fault & coast to stop
4: Fault & by Quick Stop Time
Reset Method
Auto
When Pr. H5-00 = 0, ot1 is “Warning”. The ot1 warning automatically
clears when the output current is < (Pr. H5-04 × 95%)
Manua
l
“Error” occurs when Pr. H5-00 = 1–4. You must reset manually.
Reset Condition
Immediately reset
Record
Records when Pr. H5-00 = 1–4, ot1 is “Fault”
Cause
Corrective Actions
Incorrect parameter setting
Reset Pr. H5-04 and Pr. H5-05.
Mechanical failure (e.g., over-
torque, mechanical lock)
Remove the causes of malfunction.
The load is too large
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)
V/F voltage is too high
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.