Delta VP3000 Series - Page 419

Chapter 8 Troubleshooting｜VP3000
410
ID No.
Warning Name
Descriptions
20
Over-torque
(ot1)
Over-torque 1 warning
Action and Reset
Action Condition
Pr. H5-04
Action Time
Pr. H5-05
Warning Setting Parameter
Pr. H5-00 (ot Action) = 0
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
The ot1 warning automatically clears when the output current is < (Pr. H5-04 ×
95%)
Reset Condition
The ot1 warning automatically clears when the output current is < (Pr. H5-04 ×
95%)
Record
No
Cause
Corrective Actions
Incorrect parameter setting
Reset Pr. H5-04 and Pr. H5-05.
Mechanical failure
(E.g., over-torque, mechanical
lock)
Rule out 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.E0-04, E0-06, E0-08, E1-04, E1-06, E1-08 (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.