Rockwell Automation 8510 AC Spindle Drive System User Manual - Manual (Page 123)

Troubleshooting
Chapter 11
11-119
ATTENTION: High voltage that presents an electrical shock
hazard is present on the Main Control Board of the
8510A-A11-x2 and 8510A-A22-x2 drives. The upper right half
of the board contains the IGBT gate drive circuits, while the
upper left quarter contains the power supply. DC bus voltage
(approximately 325V DC) is present in both of these areas.
These areas contain the voltage warning symbol (see example)
and are outlined with a heavy white line. To avoid injury, only
qualified personnel should perform start-up or maintenance
procedures on this drive.
!
ATTENTION: This product contains stored energy devices. To
avoid hazard of electrical shock, verify that all voltage on the
capacitors has been discharged before attempting to service,
repair or remove this unit. A relay connects a resistor across the
DC bus to discharge the capacitors. Normally the capacitors will
discharge within 30 seconds. An LED on the upper right side of
the Main Control Board on 8510A-A11-x2 and 8510A-A22-x2
drives will be illuminated when the bus voltage is above 50V
DC.
!