Rockwell Automation 9VT201-007HTNNN, User Manual, Page: 101 / 224

Programming and Parameters 3-39
Publication 9VT-UM001D-EN-P
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Sleep-Wake Operation
The normal operation of this function is to start (wake) the drive when the selected
analog signal is greater than or equal to a user-specified wake level and stop the
drive when an analog signal selected by [Logic Source Sel] is less than or equal
to a user-specified sleep level.
Assuming all drive permissive conditions are met, the drive will start when
[Sleep-Wake Mode] is enabled (= Direct) and the absolute value of the
[Sleep-Wake Ref] is greater than the programmed [Wake Level] for longer than the
programmed [Wake Time].
The drive will stop when the absolute value of the [Sleep-Wake Ref] is less than
the programmed [Sleep Level] for longer than the programmed [Sleep Time].
While the drive is measuring the time above [Wake Level], it will indicate a
“Waking” alarm at [Drive Alarm] bit 10 “Waking.” If [Sleep-Wake Ref] goes above
[Sleep Level] or below [Wake Level] the corresponding timer is reset (Wake timer
and Sleep timer, respectively).
Any active Stop commands will be honored immediately (i.e. no Sleep Timer).
However, after a Stop or Fault, a new Start/Run command is required to reset
Sleep-Wake control.
There are two ways to override the normal Sleep-Wake operations:
(1) Sleep Override - starting with Analog Input < Sleep Level. This mode prevents
the Analog Input from being able to stop the drive.
(2) Wake Override - starting with Analog Input > Sleep Level & < Wake Level. This
mode still allows the drive to be stopped when Analog Input goes below [Sleep
Level].
The capability of Sleep-Wake to be overridden depends on the value selected by
[Logic Source Sel]. When the Logic Source is “All Ports” only a “Wake Override” is
possible. When the Logic Source is DPI Ports (i.e. Local OIM, DPI Ports, or
Network) both Sleep and Wake Overrides are possible. When the Logic Source is
“Terminal Blk” no override of Sleep-Wake is possible. If starting via Sleep-Wake
override, it remains in effect until the next stop command.
[Sleep Level] and [Wake Level] are adjustable while the drive is “awake”. If these
levels are set incorrectly, the “Sleep Config” alarm is set. If the current
configuration is not corrected, the drive will stop after the programmed [Sleep
Time].
Even though the Sleep-Wake feature is enabled, the operation of other start
modes is unchanged (e.g. if Level Sense Start is set to Enabled, Logic Source
Select is set to All Ports, and a start command is asserted, the drive will start
immediately after [Sleep-Wake Ref] reaches the sleep level) due to Sleep
Override.
The Sleep-Wake feature can also be overridden in the following ways:
•
The Purge digital input overrides all Sleep-Wake operations. Asserting Purge
will start the drive even if [Sleep-Wake Ref] is below [Sleep Level]. Negating
Purge will cause the drive to stop if no valid Start/Wake signal is present.
While Purge is active, the Sleep-Wake analog input will not be able to start or
stop the drive.
•
The OIM Control digital input allows an attached OIM (DPI port) to start the
drive by overriding the Sleep-Wake Sleep signal (i.e. the analog input is below
the Sleep level). Once overridden by the OIM, the Sleep-Wake analog input
will no longer be able to start or stop the drive until it is restarted while the
analog input is above the Sleep level. Purge will override OIM control.
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Parameter Name and Description
See page 3-2 for symbol descriptions
Values
Re
lated