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GX9 ASD Quick Start Guide
OC2
Over-Current During
Deceleration
• Phase-to-phase short (U, V, or W).
• Deceleration time is too short.
• Motor/machine jammed.
• Mechanical brake engaged while the ASD is running.
• ASD current exceeds 340% of the rated FLA on ASDs that are 100 HP or
less during deceleration. On ASDs that are greater than 100 HP, it occurs
when the ASD current exceeds 320% of the rated FLA during deceleration.
OC2P
Over-Heat During
Deceleration
• Cooling fan inoperative.
• Ventilation openings are obstructed.
• Internal thermistor is disconnected.
• Deceleration time is too short.
• DC Injection current is too high.
• ASD or the motor is improperly matched to the application.
OC3
Over-Current During
Fixed Speed
• Load fluctuations.
• ASD is operating at an elevated temperature.
• ASD current exceeds 340% of the rated FLA on ASDs that are 100 HP or
less during a fixed-speed run or if during a fixed-speed run the ASD
overheats. On ASDs that are greater than 100 HP, it occurs when the ASD
current exceeds 320% of the rated FLA on a fixed-speed run.
OC3P
Over-Heat During Run
• Cooling fan inoperative.
• Ventilation openings are obstructed.
• Internal thermistor is disconnected.
• Improper V/f setting.
• ASD or the motor is improperly matched to the application.
OCA1 or OCL
U-Phase Over-Current
• Low impedance at the U lead of the ASD output.
OCA2 or OCL
V-Phase Over-Current
• Low impedance at the V lead of the ASD output.
OCA3 or OCL
W-Phase Over-Current
• Low impedance at the W lead of the ASD output.
OCR
Dynamic Braking
Resistor Over-Current
• ASD inability to discharge the bus voltage during regeneration.
• No dynamic braking resistor (DBR) installed.
• Deceleration time is too short.
• Improper DBR setup information.
• Defective IGBT7 (or IGBT7 ckt.).
• 3-phase input voltage is above specification.
OH
Over-Heat
• Cooling fan inoperative.
• Ventilation openings are obstructed.
• Internal thermistor is disconnected.
LED Screen
LCD Screen
Possible Causes/Troubleshooting
Summary of Contents for GX9 ASD
Page 1: ...GX9 ASD Quick Start Guide TOSHIBA GX9 ASD Quick Start Guide DN 66900 001 March 2014 ...
Page 2: ......
Page 3: ...Document Number 66900 001 March 2014 GX9 ASD Quick Start Guide ...
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Page 88: ...78 GX9 ASD Quick Start Guide Figure 33 GX9 ASD 5 0 20 HP Enclosure ...
Page 89: ...GX9 ASD Quick Start Guide 79 Figure 34 GX9 ASD 25 75 HP Enclosure ...
Page 90: ...80 GX9 ASD Quick Start Guide Figure 35 GX9 ASD 100 200 HP Enclosure ...
Page 91: ...GX9 ASD Quick Start Guide 81 Figure 36 GX9 ASD 250 400 HP Enclosure ...
Page 92: ...82 GX9 ASD Quick Start Guide Figure 37 GX9 ASD 500 800 HP Enclosure ...
Page 93: ...GX9 ASD Quick Start Guide 83 Figure 38 GX9 ASD 900 1200 HP Enclosure ...
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