Rockwell Automation 8510 AC Spindle Drive System User Manual - Manual (Page 67)

Interface Signal Descriptions
Chapter 7
7-63
Digital Outputs
Current Motor Winding Selected (Low/High) – CN9-18, 19
When this output is Off, the low speed motor winding is connected. When
this output is turned On, the high speed winding has been connected.
Drive Ready – CN9-20, 21
The Drive Ready output is turned On after the Drive Enable signal has
been applied and the drive has successfully completed the power-up
sequence (ready for the Forward or Reverse Run commands). If for any
reason the drive is unable to respond to the Forward or Reverse Run
commands, this output is turned Off.
Hard Fault – CN9-22, 23
The hard fault output will be On if power is applied to the drive, there are
no internally detected fault conditions, and the drive is waiting for or
executing input commands. If stated in digital terms, this output would be
called Hard Fault.
This output will be turned Off whenever a drive fault condition occurs that
will prevent the drive from properly controlling the motor.
If the motor is rotating when a fault condition is detected, the drive (if it is
still capable of controlling the motor) will regenerate the motor to a stop
and open the contactor. If the drive is unable to control the motor, the
contactor will be opened and the motor will coast to a stop.
After a hard fault has occurred, the fault condition must be corrected, any
inputs that command motion must be Off and the Reset input must be
applied or the AC power cycled. It is not necessary for the motor to stop
rotating before resetting and restarting the drive.
Soft Fault – CN9-24, 25
The Soft Fault output will be On if power is applied to the drive, there are
no internally detected fault conditions, and the drive is waiting for or
executing input commands. If stated in digital terms, this output would be
called Soft Fault.
This output will be turned Off as a result of motor overtemperature, drive
overtemperature, or improper command sequences that can not be acted
upon by the drive. During a soft fault condition, the drive will continue to
operate normally. After about 2 minutes for a motor overtemperature and
30 seconds for a drive overtemperature, the fault will be changed to a hard
fault and the motor will be regenerated to a stop. If the condition is
corrected before it converts to a hard fault, the soft fault is automatically
cleared and the output will again be turned On.