Curtis 1239E - Page 95

Return to TOC Curtis 1239E-1269E Manual, os 37.0 RevA – May 2021
7 — INITIAL SETUP
pg. 91
Step 11: Motor Characterization
For an ACIM motor, use either:
(a) Already have soware with the motor data programmed to match the motor. e pre-set motor
data soware is usually the result of contacting Curtis and getting a match between the motor and the
Curtis ACIM motor database, or by shipping a motor to the Curtis factory for dyno characterization.
Or (b) Use the in-vehicle ACIM Motor Characterization Procedure (Chapter 8A). is procedure will
set the direction, may set the Encoder Steps, learn ACIM motor data, and set the FW Base Speed and
Field Weakening Drive. Be sure to complete the SlipGain setting for maximum torque and eciency.
Aer ensuring that the controller has the motor data values that match the system, complete Steps
12 through 15 of the initial setup.
NOTE: Do not take the vehicle down off the blocks if re-running the Motor
Characterization procedure.
Step 12: Checking Direction of Rotation
Do not take the vehicle down off the blocks until the motor is responding properly.
Only aer the motor is responding properly is it safe to lower the vehicle and place the drive wheels
on the ground.
Once the encoder direction set correctly, this step tests to see whether the motor rotation is correct.
Begin by cycling KSI o and on (to clear any parameter change faults), then use the 1313/1314
programmer to check for faults in the controller. All faults must be cleared before continuing with the
setup procedure. Apply the interlock input and verify that Interlock = On (as veried in the Monitor »
Inputs menu). en, while keeping the brake in neutral*, select a direction and apply throttle. e
motor should begin to turn.
For an ACIM motor, observe the motor rotation and if the motor appears to be “ghting itself ”
(struggling at full current while jerkily turning at very low speed), change the setting of the Swap
Two Phases parameter.
Contact the Curtis distributor or support engineer if the proper motor direction cannot be resolved.
Step 13: Interlock Braking
Set up the parameters in the Interlock Braking Menu.
Step 14: High Voltage Battery Insulation Resistance & Threshold Setting (optional)
e controller’s insulation monitor alternates a high-resistance connection between the chassis and
the high voltage battery positive (B+) and negative (B–) approximately once per second, accounting
for capacitance typically found in symmetric high-voltage insulation faults. e monitor circuit will
quickly settle on and report the external fault’s resistance in kΩ, such as insulation degradation in a
high voltage battery conductor or an internal motor fault to the chassis. is value is in addition to
the Insulation Resistance Low Fault (fault code 76) set by the Insulation Resistance Fault reshold
parameter. When fault code 76 is active (set), the circuit’s periodic high-resistance connections stop,
preventing further determination of the external fault’s resistance. Note: Driving is still allowed when
fault code 76 is active.
Quick Link:
ACIM characterization p.93
WARNING
Quick Links:
Interlock Braking Menu p.73
Insulation Resistance fault
reshold parameter p.70
Insulation Resistance Low
(Fault Code 76) p.146
Isolation Monitor
description p.28
Fig 19 p.114
*NOTE: The Throttle Command is zeroed if the Brake Command is > 0 for Control Modes 0 and 1. See Figure 19.