Rockwell Automation FlexPak 3000 Digital DC Drive Version 4.3 - Manual (Page 93)

Configuring the Field Supply 8-9
FIELD AUTO WEAKEN (P.517)
Enables or disables
automatic field
weakening by the
field control loop.
When it is disabled,
the field current
PI
block high limit is
fixed at 180 degrees.
Parameter Range: DISABLED
ENABLED
Default Setting: DISABLED
Parameter Type: Configurable
OIM Menu Path(s): Field - Field Current Regulator - Field Loop Configure
If FEEDBACK SELECT is set to ARMATURE VOLT , this is automatically set to DISABLED
and cannot be changed.
FIELD DELTA HIGH LIM (P.587)
High limit of the field
current
PI block.
Parameter Range: 0 to 180 DEGREE
Default Setting: 130 DEGREE
Parameter Type: Configurable
OIM Menu Path(s): Field - Field Current Regulator - Field Loop Configure
FIELD LOSS THRESHOLD (P.512)
The value that is
compared to
FIELD
FEEDBACK (P.589) to
check for field loss.
Parameter Range: 50 to 100% of MOTOR HOT FLD AMPS (P.510) when
FEEDBACK SELECT (P.200) is set to ARMATURE
VOLT
0 to 100% of MOTOR HOT FLD AMPS (P.510) when
FEEDBACK SELECT (P.200) is set to DC TACH , PULSE
TACH , or AC TACH
Default Setting: 60% of MOTOR HOT FLD AMPS (P.510)
Parameter Type: Configurable
OIM Menu Path(s): Field – Field Current Regulator – Field Loop
Configure
FIELD LOSS THRESHOLD is set as a percentage of MOTOR HOT FLD AMPS . It is usually
set to 85% of the motor nameplate field weaken current.