GE IC3645SR4U404N2, IC3645SP4U400N3 Field Current, Summary of Current Limit Adjustments

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ADJUSTABLE FEATURES

SX TRANSISTOR CONTROLS

Section 6.5 Summary of Current Limit Adjustments

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MAXIMUM

FIELD CURRENT

ZERO

The " maximum fieldcurrent" setting

Maximum field

current is fixed at

is adjusted by Function 8. This

37.5 amps

function, along with the"armature

 

current limit", Function 4, sets the

 

maximum torque of the motor.

 

The " ratio" setting is adjusted by Function 26. This function sets the ratio between armature and field current when operating, I is

MOTOR

above FWS and less than 300 amps. Setting is the value of field current changed for each 100 amps of armature current changed.

The " error compensation" setting is adjusted by Function 23. This function is used to reduce the ripple in field current due to the interaction between motor field design and the digital field current regulation circuit. The value for this function will be defined by the GE application engineer.

The " minimum field current" setting is adjusted by Function 7. The function sets the top speed of the motor. If used.

The " field weakening start" setting is adjusted by Function 24. This function sets the armature current at which minimum field current will be achieved .

ARMATURE CURRENT

ZERO

The "full load transition point"

 

 

is calculated by the controlThis.

 

function sets the maximum field

 

current transition point at

 

approximately 300A armature

 

current.

MAXIMUM

The " ratio-2 " setting is adjusted by Function 6. This function sets the ratio between armature and field current when operating, I is

MOTOR

below FWS. Setting is the value of field current changed for each 100 amps of armature current changed.

The "armature current limit" setting is adjusted by Function 4. The function along with the

"maximum field current", Function 8, sets the maximum torque of the motor.

January 2000

Page 62 Page 64
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Page 62 Page 64
Contents Installation and Operation Table of Contents 57-62 20-4041-45 46-52Motor Characteristics Basic Operation and FeaturesSlows with the increase of current in the field More Features with Fewer ComponentsSolid-State Reversing Flexible System Application3.c Pedal Position Plug Braking 1.b Creep Speed1.c Control Acceleration 2 Current Limit5 Ramp Operation 5a Ramp Start 6 Steer Pump Contactor Time Delay4.b Speed Limits 4.c Proportional Operation for Dual Motor Vehicles2 Accelerator Volts Hold Off Diagnostics 1 Systems Diagnostics7 On-Board Coil Drivers & Internal Coil Suppression System Protective Override 1 Static Return to Off SRO4.a Internal Resistance Compensation 3.a Maintenance Alert & Speed Limit4 Battery Discharge Indication BDI 3 Hourmeter ReadingsBasic Operation and Features Outline DRAWINGS, Elementary Drawings and INPUTS/OUTPUTS Part NumberArgument Outline SX-3 and SR-3 Package Size Drawings and INPUTS/OUTPUTS Section DRAWINGS, Elementary Drawings and INPUTS/OUTPUTS ControlPIN Connections to Main Plug 23 PIN and Y Plug 12 PINDiagnostic Status Codes Cable Spacing Guidelines High-Level Signals Level HMedium-Power Signals Level MP 2.d. High Power Signals Level HPCleaner Reconnect plugs328A1777G1 General Troubleshooting Instructions Status Code No seat switch or deadman switchTraction Control Codes TractionDescription of Status Cause of Status Indication Reverse directional switch is closed onStart switch fails to close Accelerator depressed with noDirection selected KEY Negative Directional switches are closed at Both the forward and reverseSame time Initial key switch closure Start switch closed on power up afterDischarged battery Motor field current is high on start up Reverse directionForward direction Volts DC Power supply is less than 10 volts Run modeMotor field current is too high during Traction Controller Slave/auxiliary control Open thermal protector TP or Transistor over temperatureProperly Motor armature offset voltage is tooLow Armature transistor did not turn offThan 12% of battery volts Armature transistor did not turn onLook Ahead test for A2 volts less Motor field current is too low during Capacitor volts are low before the lineContactor closes Controller motor current sensor Input too low during runningLine driver input P2-17 is less Description Armature transistor limit Armature current exceedsVerify connection between the master control P21 Traction Status Code Symptom TMM Status Codes TemperatureSteer Plug P5 pump is shorted to positive Plug P8 pump is shorted to positive Corrective Actions TROUBLE-SHOOTING Diagram YES Symptom PumpPossible Cause Open thermal protector TP1 or Transistor is over temperatureControl range No power to pump motorPump Controller motor current Sensor input is missingWith no pump contactor, control Power Transistor Q1 did notPower Transistor Q1 did not turn on Turn off properlyContactor closes Capacitor volts are low after the lineController motor current Sensor input voltage polarityCheck Voltage at capacitor 1C is less than Volts Battery voltage is less thanTMM7A TMM7A Outline Drawings 3 TMM Pump Control ConnectionsSTART-UP Display Sequence Adjustable FeaturesAccessing Stored Status Codes With GE Handset ActionRemarks Function Function 10 Field Current for Regen Function 16 Stall Trip Point with % ON-TIME Push Battery VoltsBattery volts Set units Internal Resistance CompensationFunction 19 Maintenance Code Tens and Units Hours SET Function 25 MonitorFunction 26 Base Ratio Function 49 Mode 1 Field Weakening Start Push Function 51 Mode 1 MAX Armature % onFunction 28 Stored Status Code Count Pointer Push Function 59 Mode 3 MAX Armature % on Function 52 Mode 2 Armature Controlled AccelerationFunction 55 Mode 2 MAX Armature % on Function 57 Mode 3 Field Weakening StartField Current Summary of Current Limit AdjustmentsFunction Current Limit Function 14 not ApplicableFunction 16 Speed / Torque Compensation Function 50 Mode 1 Speed Limit 3 SL3 Speed / Torque Compensation Table Voltage SettingFunction 48 Mode 1 Controlled Acceleration Push Function 49 Mode 1 Speed Limit 2 SL2 PushFunction 59 not Applicable Function 53 Mode 2 Speed Limit 2 SL2Function 54 Mode 2 Speed Limit 3 SL3 Function 55 not ApplicableConnections Dash DisplaysApplication Standard Dash DisplaysOutline Drawings Start-Up Display SequenceTurn Angle Potentiometer Installation SetupOperation Degree Potentiometer for Steer Angle Input Degree Potentiometer Left Right RS-232 Memory MAP Tables Traction ControlRestrictions Function Reset to Zero Only HoursThou/Hun Reset to Zero Only Stored Status Code #5Reset to Zero Only Stored Status Code #6 Reset to Zero Only HoursTens/OnesNone Reset to Zero Only Stored Status Code #16Reset to Zero Only Dash Display CA-1 Dash Display FWS-1 None Dash Display Ratio2-1
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