Rockwell Automation 1395 DC Drive, 800-1250 Hp, FRN 5.XX-9.30 - Manual (Page 154)

Chapter 5
Programming Parameters
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Parameter 721 – Process Trim Low Sum [Proc Trim Low Sum]
Internal units : 4096 = 1000H = 1 PU = base motor speed
Programming Terminal units: RPM
Minimum Value: –6 x BS RPM
Maximum Value: 0 RPM
Default Value: –6 x Base Speed RPM
Description: This parameter is associated with the Speed trim option
of the Process Trim Select Parameter (#628 = 1). Parameter 721 will
be in use when the speed trim option is enabled and the Process Trim
Regulator has been enabled. The value in Parameter #721 will be
used as the lower limit on the sum of the Ramp Velocity Reference
(Param #103) and the output of Process Trim (Param #119). The
limited sum will appear as the Final Velocity Reference (Param
#104).
Parameter 722 – Process Trim High Sum [Proc Trim High Sum]
Internal units : 4096 = 1000H = 1 PU = base motor speed
Programming Terminal units: RPM
Minimum Value: 0 RPM
Maximum Value: +6 x BS RPM
Default Value: +6 x BS RPM
Description: This parameter is the upper limit on the sum of the
Ramp Velocity Reference (param 103) and the output of Process Trim
(param #119). Parameter 722 will be in use when the speed trim
option is enabled and the Process Trim Regulator has been enabled.
The value in Parameter 722 will be used as the high limit on the sum
of the Ramp Velocity Reference (Parm 103) and the output of Process
Trim (Param 119). The limited sum will appear as the Final Velocity
Reference (Param 104).
Parameter 724 – Absolute Overspeed [ABS Overspeed]
Internal units : 4096 = 1000h = 1 PU = base motor speed
Programming Terminal units: RPM
Minimum Value: 0
Maximum Value: +Base Speed
Default Value: B.S./10
Description: This parameter indicates the incremental speed above
Forward Speed Limit (Parm 608) or Reverse Speed Limit (Parm 607)
that is allowable before an absolute overspeed fault is indicated.