Rockwell Automation 1395 Digital DC Drive FRN 5-10.10/9.30 - Manual (Page 219)

Chapter 7
Programming Parameters
7-53
Parameter 682– Field Current at 5/8 Flux [Fld I @ 5/8 FLUX]
Internal units : 4096 = 1000h = 100% rated field current
Programming Terminal units: Percent rated field current
Minimum Value: 0%
Maximum Value: 100%
Default Value: 45.5%
Description: This is the sixth 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 62.5% rated armature volts when the motor is running at base
speed and is in terms of internal units where 4096 = 100% rated field
current.
Parameter 683 – Field Current at 6/8 Flux [Fld I @ 6/8 FLUX]
Internal units : 4096 = 1000h = 100% rated field current
Programming Terminal units: Percent rated field current
Minimum Value: 0%
Maximum Value: 100%
Default Value: 60%
Description: This is the seventh 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 75 % rated armature volts when the motor is running at base
speed and is in terms of internal units where 4096 = 100% rated field
current.
Parameter 684 – Field Current at 7/8 Flux [Fld I @ 7/8 FLUX]
Internal units : 4096 = 1000h = 100% rated field current
Programming Terminal units: Percent rated field current
Minimum Value: 0%
Maximum Value: 100%
Default Value: 77.7%
Description: This is the eighth 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 87.5 % rated armature volts when the motor is running at
base speed and is in terms of internal units where 4096 = 100% rated
field current.