4 — PROGRAMMABLE PARAMETERS
Curtis 1239E-1269E Manual, os 37.0 RevA – May 2021
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pg. 58
0 – INDUCTION MOTOR (ACIM): CHARACTERIZATION TESTS
See Chapter 8A for the complete description of the ACIM motor characterization procedure.
PARAMETER ALLOWABLE RANGE DESCRIPTION
Test Enable
IM_AutoChar_Test_Enable
0x3800 0x00
0 – 1
0 – 1
Enables ACIM (induction motor) characterization with quadrature encoder to
begin once Test Throttle is asserted.
Test Throtte
IM_Test_Throttle
0x3034 0x00
–1 – 1
–1 – 1
Begins ACIM characterization if the Test Enable is asserted. This parameter is
also used to change the direction of the motor to the forward direction during
ACIM motor characterization.
Important: If the motor starts to turn in the positive-rpm vehicle (forward)
direction, set Test Throttle = 1.
If it turns in the negative-rpm vehicle (reverse) direction, set Test
Throttle = −1.
Motor Poles
IM_MotorData6
0x3805 0x00
2 – 12
1 – 6
Use this parameter to select the number of induction motor poles before
beginning the ACIM motor characterization procedure.
Induction motor “poles” are always in “pairs” and are part of the motor’s
specications from the manufacturer. Use the number of “poles” ... not “pole
pairs” for this parameter value.
Note that the VCL variable, IM_MotorData6 is in “pole pairs” (1/2 the
1314/1313 display value).
Max Test Speed
IM_AutoChar_Max_Test_Speed
0x38A0 0x00
500 – 10000 rpm
500 – 10000
This parameter sets the maximum motor speed allowed during ACIM
motor characterization.
Max Test Current
IM_AutoChar_Max_Test_Current
0x38A1 0x00
10 – 100%
3277 – 32767
This parameter sets the maximum motor current allowed during ACIM
motor characterization.
SlipGain
IM_MotorData8
0x3819 0x00
0.00 – 200.00
0 – 20000
Adjust this parameter during ACIM motor characterization procedure to tune
the motor to deliver the maximum torque per amp.
Always tune this parameter.
Current Reg Tuning Test Enable
IM_CR_Tuning_Test_Enable
0x388B 0x00
0 – 1
0 – 1
Preforms only the current-regulator tuning portion of the
autocharacterization test.
To begin, clear any existing faults, then set the Interlock = On and this
parameter = 1. Similar to the auto-characterization routine steps in
Chapter 8A, then set Test Enable = 1 followed by setting Test Throttle =
1. The controller will run the tuning test and issue a Parameter Change
Fault when finished.
If a new (or existing Type 0) motor is auto-characterized following the steps
in Chapter 8A, do not use this parameter, as it is automatically included in the
full auto-characterization routine.
Consult the Curtis distributor or support engineer for further assistance based
on the motor and its application.
Quick Link:
Chapter 8A (ACIM motor characterization) p.92
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