YASKAWA J1000 User Manual

7 Troubleshooting
26 TOEP C710606 27 J1000 Quick Start Guide
Heatsink
Overheat

• Surrounding temperature is too high.
• The cooling fan has stopped.
• The heatsink is dirty.
• The airflow to the heatsink is restricted.
Motor
Overload

• The motor load is too heavy.
• The motor is operated at low speed with heavy load.
• Cycle times of accel./ decel. are too short.
• Incorrect motor rated current has been set.
Drive
Overload

• The load is too heavy.
• The drive capacity is too small.
• Too much torque at low speed.
DC
Overvoltage

DC bus voltage rose too high.
• The deceleration time is too short.
• Stall prevention is disabled.
• Braking chopper/ resistor broken
• Too high input voltage.
Input Phase
Loss

• Input voltage drop or phase imbalance.
• One of the input phase is lost.
• Loose wires at the drive input.
DC
Undervoltage

The voltage in the DC bus fell below the undervoltage detection level.
• The power supply failed or one input phase has been lost.
• The power supply is too weak.
DC Charge
Circuit Fault
 The charge circuit for the DC bus is broken.
LED Display ALM FLT Cause
or
or

YASKAWA J1000 Specifications

General

Series	J1000
Voltage Class	200V, 400V
Frequency	50/60 Hz
Enclosure Rating	IP20
Enclosure Type	Open type
Voltage	200-240V, 380-480V
Control Method	V/f control
Overload Capacity	150% for 60 seconds
Protection	Overcurrent, Overvoltage, Undervoltage, Overheat, Ground Fault, Short Circuit
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheating, Short Circuit
Humidity	5-95% (non-condensing)
Enclosure	IP20
Input Voltage	200-240V, 380-480V