Curtis 1236SE User Manual

Curtis 1232E/34E/36E/38E & 1232SE/34SE/36SE Manual, os 30
57
24 NOVEMBER 2015
MOTOR: 0-ACIM: FIELD WEAKENING CONTROL MENU
ALLOWABLE
PARAMETER RANGE DESCRIPTION
FW Base Speed 200 – 12000 rpm Sets the speed at which modulation depth has reached 100% (all available
FW_Base_Speed 200 – 12000 voltageisused)andwhereeldweakeningbegins.Thisparameterisscaled
0x3857 0x00  byaninternalmotorcharacterizationparameter,sothesettingofFWBase
Speed should always be done using the tuning test, which will take into
account the scaling factor. Entering a speed observed from a torque vs. speed
plot should not be done, as this number fails to take into account the internal
scaling factor.
This parameter needs to be set during initial setup and reset each time the
Motor Type or the low speed current limit is changed. For example, if you lower
Drive_Current_Limit (page 41) or PL_Drive_Nominal (page 42), you should
reset this parameter.
To determine the correct value, perform this tuning test. The test should
be run with batteries that have a reasonable charge. In either Torque Control
ModeorSpeedControlMode,setyouraccelratestobefast—sothatyou’llbe
accelerating at full current during the test. Next, set the Base Speed parameter
to the maximum value (so that it will not interfere with the test result). From
a stop, apply full throttle and accelerate to high speed and then stop. After
stopping, note the value displayed in Monitor » Controller » Motor Tuning » Base
Speed Captured, and enter this value for the Base Speed setting.
The test restarts each time the vehicle comes to a stop and the throttle is
released, so be sure to note the value before driving away.
Field Weakening Drive
 0–100% Setstheamountofeldweakeningallowedwhiledrivingthemotor.
Field_Weakening_Drive 0 – 1024 FieldWeakeningDrivewillaffectefciencyandtorqueonlyatspeedsabove
0x3033 0x00  theprogrammedFWBaseSpeed.Lowsettingswillresultinbetterefciency
butlesstorque;highersettingswillresultinmoretorqueandlessefciency.
Asettingofzerowilldisableeldweakening,thusresultinginthehighest
efciencyandlowesttorqueabovebasespeed
 Tokeepmotorandcontrollerheatingtoaminimum(highefciency),
Field Weakening Drive should be set just high enough to meet the high speed
performancespecications.(Typicalhighspeedperformancespecications
are maximum drive speed with full load, or maximum lift speed with full load.)
The drive current limiting map (see page 42) can also be used to restrict
performance at all speeds.
The maximum setting of the Field Weakening Drive parameter depends on
thetypeofmotorcharacterizationthatwasused.
If the ACIM motor was dyno characterized (i.e., sent to Curtis for
characterizationonthemotordyno),FieldWeakeningDrivecanbeset
anywhereintherangeof0%(lowesttorque,highestefciency)to100%
(highesttorque,lowestefciency).
If the ACIM motor was auto characterized(i.e.,characterizedusingthe
ACIMmotorcharacterizationprocedureinSection6a),therangeisrestricted
by the results of the Field Weakening Test. For these motors, Field Weakening
Drivecanbesetanywhereintherangeof0%(lowesttorque,highestefciency)
toMaxFieldWeakeningDrive(highesttorque,lowestefciency).Forauto
characterizedmotors,settingFieldWeakeningDrivegreaterthanthemaximum
settingfoundintheFieldWeakeningTestwillresultinpoorerefciencyandless
torque as the motor will be operating “over the slip curve.”
Note: The Field Weakening Drive setting will have no effect at motor
speeds below FW Base Speed.
3 — PROGRAMMABLE PARAMETERS: Motor Parameters

Curtis 1236SE Specifications

General

Brand	Curtis
Model	1236SE
Category	Controller
Language	English