Rockwell Automation 1395 DC Drive, 800-1250 Hp, FRN 5.XX-9.30 User Manual

Page 140

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Chapter 5
Programming Parameters

5-49

Parameter 667 – Minimum Taper Current [Min Taper Cur]

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: 100%
Description: This is the armature current limit value that will be used
for motor speeds above the End Taper Speed value. The final
armature current reference value will be limited to a number less than
or equal to this number.

Parameter 668 – DI/DT Limit [dI/dT Limit]

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: 12.5%
Description: This parameter specifies the largest change in armature
current reference that will be allowed per 4.0 msec sample. A value
of 100% indicates that the armature current reference will be allowed
to change by no more than rated motor current in a 4.0 msec period.

Parameter 669 – Slave Percent [Slave Percent]

Internal units :
Programming Terminal units: %
Minimum Value: –200
Maximum Value: 200
Default Value: 100
Description: The torque command will be multiplied by slave
percent, when the torque mode in Parameter 625 = 2.

Parameter 670 – Slave Percent 2 [Slave Percent 2]

Internal units : 4096 = 1000h = unity gain
Programming Terminal units: Percent gain
Minimum Value: –200%
Maximum Value: 200%
Default Value: 0%
Description: Torque Reference 2 will be scaled by the gain specified
in this parameter. The scaled torque will then be summed with the
scaled torque reference value from Parameter #157.

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