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IMPULSE•T Instruction Manual – October 2015
6-7
OL3
Overtorque
Det 1
Overtorque Detection Level 1 Fault.
Current is higher than set value (150%)
for more than set time (0.1 sec).
1. Reduce the load.
X
X
OV
DC Bus Overvolt
Overvoltage Fault.
The DC bus voltage
exceeded the overvoltage level. Detection
level:
230V class—approx. 410V
460V class—approx. 820V
1. Extend the deceleration time.
2. Check the resistor.
3. Check the line voltage.
4. If on a load break hoist, check
the gear box.
X
OV
(flashing
)
DC Bus Overvolt
Overvoltage Fault.
Overvoltage occurs
during stop. Main circuit DC voltage rises
above the detection level while the drive
output is off. Detection level: 410V or
more for 230V, 820V or more for 460V.
1. Check the line voltage.
X
PF
Input Pha Loss
Input Phase Loss Fault.
Inverter input
power supply has open phase.
1. Check the line voltage.
2. Remove power.
3. Retighten the input terminal
screws.
4. Check line fuses.
X
RH
DynBrk Transistr
Braking Transistor Resistor.
Internal
Braking transistor failed.
1. Verify that the external braking
resistor is connected to the
proper terminals.
2. Confirm that the proper resistor
is installed.
3. Check for a short circuit across
the braking resistor.
X
UV
(flashing)
DC Bus Undervolt
Undervoltage Fault.
Undervoltage status
occurs for more than 2 sec during STOP.
Input voltage drops below 190V DC or
less for 230V AC class, 380V DC or less
for 460V AC class.
1. Check the power source wiring.
2. Replace any bad branch fuses.
3. Check collector system.
X
UV1
DC Bus Undervolt
Undervoltage 1 Fault.
Undervoltage
status occurs for more than 2 sec during
RUN command. Input voltage drops
below 190V DC or less for 230V AC
class, 380V DC or less for 460V AC
class.
1. Check power supply wiring.
2. Correct the line voltage.
3. Check collector system.
X
UV3
Soft charge
Soft charge circuit fault.
The pre-
charge contactor opened during
operation.
1. Check power supply wiring.
2. Correct the line voltage.
3. Check collector system.
4. Wait 30–45 seconds before
restarting drive after auto shut
down.
X
Fault Code
Fault or Indicator Name/Description
Corrective Action
Fau
lt
Alar
m
Summary of Contents for Impulse-t 2006-T
Page 2: ......
Page 7: ...C h a p t e r 1 Introduction...
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Page 15: ...C h a p t e r 2 Installation...
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Page 21: ...C h a p t e r 3 Wiring...
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Page 33: ...C h a p t e r 4 Getting Started...
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Page 45: ...C h a p t e r 5 Programming Features...
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Page 69: ...C h a p t e r 6 Troubleshooting...
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Page 77: ...A p p e n d i x A Advanced Parameter Listing...
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