Rockwell Automation 1395 Digital DC Drive FRN 5-10.10/9.30 - Manual (Page 217)

Chapter 7
Programming Parameters
7-51
Parameter 676 – Field Flux Reference [Fld Flux Ref]
Internal units : 4096 = 1000h = 100% full motor flux.
Programming Terminal units: percent of full motor field flux.
Minimum Value: 0.024%
Maximum Value: 125%
Default Value: 100%
Description: This parameter specifies the full flux reference value for
the motor. This value is the highest flux reference value that can be
applied to the motor field. For a drive running below base speed (no
field weakening), this is the flux value that will be in use.
Parameter 677 – Field Current at 0/8 Flux [Fld I @ 0/8 FLUX]
Internal units : 4096 = 1000h = 100% rated field current
Programming Terminal units: None
Minimum Value: 0%
Maximum Value: 100%
Default Value: 0%
Description: This is the first entry in a 9 element lookup table for
converting flux reference commands to field current reference. The
lookup conversion is used to linearize the field current reference with
respect to flux. This value corresponds to the field current required to
produce 0 armature volts when the motor is running at base speed and
is in terms of internal units where 4096 = 100% rated field current.
This should always be at 0%.
Parameter 678 – Field Current at 1/8 Flux [Fld I @ 1/8 FLUX]
I nternal units : 4096 = 1000h = 100% rated field current
Programming Terminal units: None
Minimum Value: 0%
Maximum Value: 100%
Default Value: 6.6%
Description: This is the second entry in a 9 element lookup table for
converting flux reference commands to field current reference. The
lookup conversion is used to linearize the field current reference with
respect to flux. This value corresponds to the field current required to
produce 12.5% armature volts when the motor is running at base
speed and is in terms of internal units where 4096 = 100% rated field
current.