1 — INTRODUCTION
Curtis 1239E-1269E Manual, os 37.0 RevA – May 2021
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pg. 2
e 1239E and 1269E controller oers superior control of motor-drive performance and ease of
integration into on-road vehicles. Features include:
• Closed-loop speed and torque control for induction (ACIM) motors.
• Full eld-weakening capability with ACIM motors.
• Electrical isolation between the low power and high power circuits.
• Isolation monitor measures insulation resistance between chassis and high power circuit.
• Built-in auto-characterization routines for effective in-vehicle optimization of motor
performance and eciency.
Figure 2
Curtis 1269E dual-voltage
AC induction motor
controller.
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