Rockwell Automation 20G PowerFlex 750-Series AC Drives - Manual (Page 27)

Rockwell Automation Publication 750-RM002B-EN-P - September 2013 27
Drive Configuration Chapter 1
Aborting an Auto-Reset/Run Cycle
During an Auto Reset/Run cycle the following actions/conditions abort the
reset/run attempt process.
• A stop command is issued from any source. (Removal of a 2-wire run-fwd
or run-rev command is considered a stop assertion.)
• A fault reset command is issued from any source.
• The enable input signal is removed.
• P348 [Auto Rstrt Tries] is set to zero.
• A Non-Resettable fault occurs.
• Power to the drive is removed.
• The Auto Reset/Run Cycle is exhausted.
After all [Auto Rstrt Tries] have been made and the drive has not successfully
restarted and remained running for five minutes or more, the Auto Reset/Run
cycle is considered exhausted and therefore unsuccessful. In this case the Auto
Reset/Run cycle terminates and an F33 “AuRsts Exhaust” fault is indicated by
P953 [Fault Status B] Bit 13 “AuRstExhaust.”
Auto/Manual The purpose of the Auto/Manual function is to permit temporary override of
speed control and/or exclusive ownership of logic (start, run, direction) control.
A manual request can come from any port, including HIM, digital input or other
input module. However, only one port can own manual control and must release
the drive back to auto control before another port can be granted manual control.
When in Manual mode, the drive receives its speed reference from the port that
requested manual control, unless otherwise directed by the Alternate Manual
Reference Select.
The HIM can request Manual control by pressing the Controls key followed by
the Manual key. Manual control is released by pressing the Controls key followed
by Auto. When the HIM is granted manual control, the drive uses the speed
reference in the HIM. If desired, the auto speed reference can be automatically
preloaded into the HIM when entering HIM manual control, so that the
transition is smooth.
Manual control can also be requested through a digital input. To do this, a digital
input has to be set to request Manual control through P172 [DI Manual Ctrl].
Digital Input Manual control requests can be configured to use their own
alternative speed reference to control the drive. Digital inputs can also be used in
conjunction with Hand-Off-Auto Start to create a three way HOA switch that
incorporates Manual mode.
The Safe Speed Monitor Option Module uses Manual mode to control the speed
of the drive when entering Safe Limited Speed monitoring.