Curtis 1239E - Page 98

8A — AUTOMATED ACIM MOTOR CHARACTERIZATION PROCEDURE
Curtis 1239E-1269E Manual, os 37.0 RevA – May 2021
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pg. 94
Motor will start to rotate after next step.
10. Set Test rottle = +1.
Motor » Control Algorithms » 0-ACIM » Characterization Tests » Test Throttle
11. Aer approximately 30 or more seconds the motor will begin to rotate. It is critical to verify the
motor is turning in the FORWARD vehicle direction. If it is not, set Test rottle = 0, wait for
the motor to come to a stop, then set Test rottle = –1. Notes: (1) is step runs faster if TACT
is not running. (2) If the motor starts to accelerate then slows down again, increase Max Test
Current (IM_AutoChar_Max_Test_Current). See step 4 above.
12. e automated test may take several minutes. When it is complete, the controller will have a
Parameter Change Fault. is is normal. Check whether other faults are present. If there is a
Characterization Error fault, read the number at Monitor » Controller » Motor Characterization
Error and reference the following table. All errors except “1” indicate the motor characterization
data is invalid. For error “1,” the data is valid but Encoder Steps must be set manually. Contact
the Curtis distributor or support engineer if the Motor Characterization Errors indicated cannot
be resolved.
Motor Characterization Errors
0 Sequencing error. Normally caused by turning off Motor Characterization Test.
Enable before running test.
1 Encoder signal seen but step size could not be auto-detected; set up Encoder Steps
manually. (Only encoder steps of 32, 48, 64, and 80 will be identied automatically.)
Program » Motor » Encoder Steps.
2 Motor temperature sensor fault.
3 Motor temperature > MotorTemp_Hot (150°C is the typical default). This is active only
when the motor temp sensor is present and enabled.
4 Controller overtemperature.
5 Controller undertemperature.
6 Battery undervoltage.
7 Battery severe overvoltage.
8 Encoder signal not seen, or one or both channels missing.
9 Motor parameter out of characterization range; check to be sure motor has no load.
13. Cycle KSI power. e motor control should now be operational, though likely poorly optimized.
e Slip Gain test is very important to ensure the optimum torque and motor eciency. e
following steps will complete the optimization process.
14. Run the SlipGain test.
Adjust the SlipGain parameter to provide maximum torque at stall (0 rpm motor speed). Note:
e present SlipGain value was determined by the auto-characterization procedure, and is not
the default value.
Motor » Control Algorithms » 0-ACIM » Characterization Tests » SlipGain
To determine the SlipGain setting, use either of the following two methods, with (a) being the
most accurate:
14.1 Configure the vehicle to measure stall torque, by using a load cell / draw bar test.
Note: Perform this test quickly to avoid excessive motor heating and provide the most
accurate results.
WARNING
Quick Links:
Characterization Tests p.58
Test rottle
Motor Characterization
Error p.82
Quick Link:
SlipGain p.58