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Appendix-2:
Check List and Trouble Shooting
If any error or faults occur during a test run, consult the table below.
Problem
Fault OPE11 has occurred.
Fault OPE22 or OPE23 has occurred.
Fluctuation is occurring in Open Loop Vector
Mode when lowering the load without a
counter-weight (using a hoisting crane).
Fluctuation occurs in Open Loop Vector Mode
when performing lowering operations in a
traverse crane or a hoist crane with a
counter-weight.
Sequence Fault SE1~SE4 has occurred.
The crane sequence and/or impact stop
sequence aren't functioning.
The drive remains stopped although a Run
Command has been entered.
Poles are scrambled due to the stop position and
the load rate.
The motor stops when running at the speed of
the Brake Release Frequency.
Output Current is too high, and/or the crane is
fluctuating (in Open Loop Vector Control).
Excessive current just after the crane has
stopped lowering and started to hoist the load.
The load slips down or drops suddenly.
Excessive slipping at start.
Excessive slipping when the drive is stopping. ・ S lip Prevention Time (S1 -15) setting is to short
Cause
Parameter setting error.
Parameter setting error.
Setting error when operating in reverse (S1 -20). Change the parameter access level (A1-01) to "2",
Setting error when operating in reverse (S1 -20). Change the parameter access level (A1-01) to "2",
External sequence or parameter setting error. See section 6.1.5, "Sequence Errors".
Parameter b1-02 equals zero (allowing the Run
Command via the digital operator),
The external baseblock signal continues to be
given (using an N.C. relay).
Decel time is not functioning properly due to the
stall prevention setting.
・
Excessive motor slip
・
Setting error in the Brake Release
Frequency (S1-01, -02)
・ B rake Sequence has not been tuned
・ D rive parameter gain setting and motor do not
match
Depends on the characteristics of the motor.
・ V/f setting is to low.
When operating in Vector Control Mode:
・ Motor parameters have not been tuned
・ Torque Limit is set too low.
・
Brake Release Current / Torque (S1-05~08)
is set too low.
・
V/f setting is too low
When in Open Loop or Flux Vector Control
Mode:
・
The setting in C4 -02 is too long during
Torque Compensation (Open Loop Vector)
・
Torque Compensation Amount / Torque
Forcing Amount (S1- 09) is too low.
(when not in Flux Vector Control
・ S top Timer (b2-04) setting is too short (Flux
Vector Control)
Counter-Measure(s)
See section "7. Faults and Counter-Measures"
See section "7. Faults and Counter-Measures"
and then set S1 -20 to " 1".
and then set S1 -20 to " 1".
Change b1-02 to " 1" (Control Circuit Terminal), and
have the Run Command entered via the control
circuit.
Have the External Baseblock signal input to the
terminal selected for External Baseblock, or simply
don't use the External Baseblock signal.
Increase the deceleration time to the point where the
Stall Prevention Function isn 't triggered.
Increase the Brake Release Frequency (S 1-01, -02).
Refer to, "Appendix-3: Tuning Procedures".
・
Set parameter S2 -03 based on the formulas in,
"Appendix-1: Parameter Calculations".
・
Increase the V/f setting.
When in Open Loop or Flux Vector Control Mode:
・
Perform Auto-Tuning
・
Increase the setting for the Torque Limit.
・
Increase the Brake Release Current / Torque
(S1 -05~08).
・
Increase the V/f setting.
When in Open Loop or Flux Vector Control
Mode:
・
Lower the Torque Compensation Primary
Delay Time (C4-02) to as low as 20ms.
・
Increase the Torque Compensation / Forcing
Amount (S1-09).
Refer to, "Appendix-3: Tuning Procedures".
・ S et a longer Slip Prevention Time (when not in
Flux Vector Mode
・ S et a longer Stop Timer (in Flux Vector Control)
Refer to, "Appendix-3: Tuning Procedures".
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