GE IC3645SR3R404P2 - Summary of Current Limit Adjustments

ADJUSTABLE FEATURES
SX TRANSISTOR CONTROLS Page 52
July 1999
Section 5.5 Summary of Current Limit Adjustments
ZERO
MAXIMUM
ZERO
MAXIMUM
FIELD CURRENT
ARMATURE CURRENT
The " minimum field
current"
setting is
adjusted by Functions 50,
55 and 60. The function
sets the top speed of the
motor.
The " maximum field current"
setting is set at 38 amps. This
function, along with the
"maximum
armature current"
(Function 4),
sets the maximum torque of the
motor.
The " maximum armature
current"
setting is adjusted by
Function 4. The function along
with the
"maximum field
current"
(Function 8) sets the
maximum torque of the motor.
The " field weakening start "
setting is adjusted by Functions 49,
54 and 59. This function sets the
armature current at which minimum
field current will achieved .
The " ratio" setting is adjusted by Functions
51, 56 and 61. This function sets the ratio
between armature and field current when
transitioning from minimum field to maximum
field current. Setting is the value of field
current changed for each 100 amps of
armature current changed.
The "full load transition point"
is calculated by the control. This
function sets the maximum field
current transition point at
approximately 300 amps.