Yaskawa GPD 506/P5 Section Two - Manual (Page 7)

PP.P5G5.02Troubleshoot
Page 7
Rev. 06/11/2003
Apply Power
Step 2
Apply the appropriate AC voltage (230V/460V/600V) to the input terminals
marked L1, L2, and L3 and watch for the following signs of trouble.
1. The 30W 500 Ohm resistor gets hot.
2. The DC bus voltage is low.
• For a 230V inverter with 230V AC applied to the input, the DC bus
voltage should be approximately 325VDC.
• For a 460V inverter with 460V AC applied to the input, the DC bus
voltage should be approximately 650VDC.
• For a 600V inverter with 600V AC applied to the input, the DC bus
voltage should be approximately 845VDC.
3. The digital operator displays an undervoltage fault.
4. No display on the digital operator.
If any of these conditions occur, Turn off the power immediately!
It is possible that there is still a short between the positive and
negative portions of the DC bus. Refer to page 10 and perform the checks
without power again.
CAUTION !