Toshiba Q9 Installation And Operation Manual page 209

EOI Display
ASD Output Current Greater than F601
Over-Current
Setting.
*Over-Heat Over-Heating.
Torque Requirement in Excess of the
Over-Torque Setting of F616 or F617 for a Time Longer
than the Setting of F618.
Part Replace Part Replacement Alarm.
Run-Time Counter User-Set Run-Time Counter Exceeded.
Soft Stall Overload Soft Stall Active.
Option Thermal Sensor Threshold
Thermal Err
Exceeded.
Output Current of the ASD is Below the
Under-Current
Level Defined at F611.
Note: * Reset ignored if active.
Q9 ASD Installation and Operation Manual
Table 11. Alarms (Continued)
Fault Description Possible Cause
• Phase-to-phase short (U/T1, V/T2, or W/T3).
• Defective IGBT (U/T1, V/T2, or W/T3).
• ASD output to the motor is connected incorrectly.
• ASD is attempting to start into a spinning motor
after a momentary power loss.
• Motor/machine jammed.
• Mechanical brake engaged while the ASD is
starting or while running.
• Acceleration/deceleration time is too short.
• Voltage Boost setting is too high.
• V/f setting adjustment required.
• Load fluctuations.
• ASD is operating at an elevated temperature.
• ASD/Motor improperly matched.
• ASD current exceeds 320% or 340% of the rated
FLA on ASDs that are greater than 100 HP or
that are 100 HP or less, respectively, during
acceleration.
• ASD is operating at an elevated temperature.
• ASD is too close to heat-generating equipment.
• Cooling fan vent is obstructed.
• Cooling fan is inoperative.
• Internal thermistor is disconnected.
• ASD is improperly matched to the application.
• Parameter F616 or F617
• Obstructed load.
• Part Replacement Alarm at
• Type Reset required; select Clear run timer.
• Soft Stall selection adjustment required (F017).
• User-set thermal threshold setting of
exceeded.
• Disable detection at F610.
• Parameter F611 adjustment required.
setting is too low.
F634 timed out.
F646
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