Rockwell Automation 21G PowerFlex 750-Series AC Drives Reference Manual User Manual
Page 79
Rockwell Automation Publication 750-RM001F-EN-P - February 2012
79
Safe Limited Speed (SLS) Modes
Chapter 7
Configuring the PowerFlex
750-Series Drive for SLS
Operation
The safety option commands the drive to enter Manual Mode during Safe
Limited Speed monitoring.
P326 [Manual Cmd Mask] - Turn off the bit corresponding to the safety
option’s port to allow modules installed in other ports to continue to control the
drive when it is operating in Manual Mode. For example, if the safety option is
installed in port 6, then turn off bit 6 in this parameter.
Install the PowerFlex Safety Option Module
on page
to review the
location of ports used by the safety option.
P327 [Manual Ref Mask] - Turn on the bit corresponding to the safety option’s
port to allow the safety option to command the drive to use its Manual Speed
Reference when it is operating in Manual Mode. For example, if the safety option
is installed in port 6, then turn on bit 6 in this parameter.
P328 [Alt Man Ref Sel] - Set this parameter to select the desired speed reference
when the drive is operating in Manual Mode. For example, set this parameter to
the value Port 0: Preset Speed 1 to configure the drive to use its P571 [Preset
Speed 1] parameter as the Manual Speed Reference. In this case, the drive’s P571
[Preset Speed 1] parameter must be less than the P55 [Safe Speed Limit]
parameter in the safety option to avoid causing an SLS Speed Fault.
When a Safe Limited Speed Reset occurs, the safety option commands the drive
to exit Manual Mode and the drive will resume operation using the speed
reference that was selected prior to Safe Limited Speed monitoring.
IMPORTANT
The drive parameters listed below must be configured for the drive to accept
this command.