6.4 Fault Detection
254
YASKAWA ELECTRIC
SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
LED Operator Display
Fault Name
SEr
Too Many Speed Search Restarts
The number of speed search restarts exceeded the number set to b3-19.
Cause
Possible Solution
Speed Search parameters are set to the
wrong values.
• Reduce the detection compensation gain during Speed Search (b3-10).
• Increase the current level when attempting Speed Search (b3-17).
• Increase the detection time during Speed Search (b3-18).
• Repeat Auto-Tuning.
The motor is coasting in the opposite
direction of the run command.
Enable Bi-directional Speed Search (b3-14 = “1”).
LED Operator Display
Fault Name
STo
Motor Pull Out or Step Out Detection
Motor pull out or step out has occurred. Motor has exceeded its pull out torque.
Cause
Possible Solution
The wrong motor code has been set
(Yaskawa motors only).
• Enter the correct motor code for the PM being used into E5-01.
• For special-purpose motors, enter the correct data to all E5 parameters according to the Test Report
provided for the motor.
Load is too heavy.
• Increase the value set to n8-55 (Load Inertia for PM).
• Increase the value set to n8-51 (Pull-In Current during Accel/Decel for PM).
• Reduce the load.
• Increase the motor or drive capacity.
Load inertia is too heavy.
Increase n8-55 (Load Inertia for PM).
Acceleration and deceleration times are too
short.
• Increase the acceleration and deceleration times (C1-01 through C1-08).
• Increase the S-curve acceleration and deceleration times (C2-01).
LED Operator Display
Fault Name
UL3
Undertorque Detection 1
The current has fallen below the minimum value set for torque detection (L6-02) for longer than the
allowable time (L6-03).
Cause
Possible Solution
Parameter settings are not appropriate for
the type of load.
Check the settings of parameters L6-02 and L6-03.
There is a fault on the machine side.
Check the load for any problems.
LED Operator Display
Fault Name
UL4
Undertorque Detection 2
The current has fallen below the minimum value set for torque detection (L6-05) for longer than the
allowable time (L6-06).
Cause
Possible Solution
Parameter settings are not appropriate for
the type of load.
Check the settings of parameters L6-05 and L6-06.
There is a fault on the machine side.
Check the load for any problems.
Содержание T1000V
Страница 10: ...10 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual...
Страница 30: ...1 4 Component Names 30 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual...
Страница 44: ...2 2 Mechanical Installation 44 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual...
Страница 100: ...4 10 Test Run Checklist 100 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual...
Страница 232: ...5 12 U Monitor Parameters 232 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual...
Страница 280: ...6 9 Troubleshooting without Fault Display 280 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual...
Страница 294: ...7 5 Drive Replacement 294 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual...
Страница 306: ...8 5 Communication Options 306 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual...
Страница 316: ...A 6 Drive Derating Data 316 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual...
Страница 422: ...D 4 Safe Disable Input Precautions 422 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual...