Rockwell Automation 1395 DC Drive, 800-1250 Hp, FRN 5.XX-9.30 - Manual (Page 139)

Chapter 5
Programming Parameters
5-48
Parameter 663 – Forward Bridge Current Limit [Fwd Brdg Cur
Lim]
Internal units : 4096 = 1000h = 100% rated motor current
Programming Terminal units: Percent of rated motor current
Minimum Value: 0.024%
Maximum Value: 260%
Default Value: 50%
Description: This parameter specifies the largest allowable positive
motor armature current that will be commanded. Attempts by the
speed regulator to exceed this level will be limited to this value. The
DC Armature current cannot exceed 2000 Amps.
Parameter 664 – Reverse Bridge Current Limit [Rev Brdg Cur
Lim]
Internal units : 4096 = 1000h = 100% rated motor current
Programming Terminal units: Percent of rated motor current
Minimum Value: 0.024%
Maximum Value: 260%
Default Value: 50%
Description: This parameter specifies the largest allowable negative
motor armature current that will be commanded. Attempts by the
speed regulator to exceed this level will be limited.
Parameter 665 – Start Taper Speed [Strt Taper Speed]
Internal units : 4096 = 1000h = 1 PU = base motor speed
Programming Terminal units: RPM
Minimum Value: Base Motor Speed/4096
Maximum Value: 6 x base speed
Default Value: base motor speed
Description: This parameter is associated with the torque taper
function. Torque Tapering will begin when motor speed exceeds this
speed.
Parameter 666 – End Taper Speed [End Taper Speed]
Internal units : 4096 = 1000h = 1 PU = base motor speed
Programming Terminal units: RPM
Minimum Value: Base Motor Speed/4096
Maximum Value: 6 x base speed
Default Value: base motor speed
Description: This parameter is associated with the Torque Taper
function. Minimum Taper Current will be used as the upper limit for
armature current reference when speed exceeds this speed.