Rockwell Automation 1395 Digital DC Drive FRN 5-10.10/9.30 - Manual (Page 229)

Chapter 7
Programming Parameters
7-63
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
(Parameter 103) and the output of Process Trim (Parameter 119). The
limited sum will appear as the Final Velocity Reference (Parameter
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 (Parameter 103) and the output of Process Trim
(Parameter 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 (Parameter 103) and the output of
Process Trim (Parameter 119). The limited sum will appear as the
Final Velocity Reference (Parameter104).
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: Base Speed/100
Description: This parameter indicates the incremental speed above
Forward Speed Limit (Parameter 608) or Reverse Speed Limit
(Parameter 607) that is allowable before an absolute overspeed fault
is indicated. Not active in AVF (1) or No Feedback Device (3). Active
in Torque Mode if Encoder or DCTACH is selected.
Parameter 725 – External Overtemperature Delay
[Ext Overtemp Dly]
Internal units : Seconds x 10
Programming Terminal units: Seconds
Minimum Value: 0.1
Maximum Value: 3276.7
Default Value: 1.0
Description: This parameter specifies the length of time that the
motor overtemperature discrete input must be low before a motor
overtemperature fault will be indicated.