YASKAWA CIMR-JA Series Installation & Start-Up Manual page 150

5.8 Troubleshooting without Fault Display
n Motor Stops During Acceleration or When a Load is Connected
Cause
• The load is too heavy.
• The limit of motor response may be
reached during rapid acceleration. This
may be a result of improper stall
prevention or automatic torque boost
function adjustment. (L3-01 = 2)
n Peripheral Devices Affected by Drive Operation
Cause
Radio frequency interference may be
generated by drive output PWM
waveform.
n
Ground Fault Interrupter Activates When Drive is Running
Cause
The output of the drive is a series of high
frequency pulses (PWM), so there is a
certain amount of leakage current. This
may cause the ground fault interrupter to
operate and cut off the drive input power.
150 YASKAWA ELECTRIC TOEP C710606 25B YASKAWA AC Drive J1000 Installation & Start-Up Manual
Increase the acceleration time (C1-01) or reduce the motor load. Also,
consider increasing the motor size and/or drive size.
• Change the Carrier Frequency Selection (C6-02) to lower the carrier
frequency. This will help to reduce the amount of transistor switching
noise.
• Install an Input Noise Filter at the input power terminals.
• Install an Output Noise Filter at the motor terminals.
• Use conduit. Metal can shield electrical noise.
• Ground the drive and motor.
• Separate main circuit wiring from control wiring.
• Change to a ground fault interrupter with a higher leakage current
detection level (such as, a sensitivity current of 200 mA or greater per
Unit, with an operating time of 0.1 s or more), or one that incorporates
high-frequency corrective actions.
• Change the Carrier Frequency Selection (C6-02) to lower the carrier
frequency.
Note: Leakage current increases in proportion to cable length.
Possible Solution
Possible Solutions
Possible Solutions