MODEL 1234
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AC INDUCTION MOTOR CONTROLLER MODEL 1234 Only Curtis AC can offer: • Curtis VCL -Vehicle Control Language is an easy to use programming language that allows vehicle developers to write powerful logic functions and create a ‘virtual system controller’. Curtis offers customers VCL development tools and training. Curtis also provides a VCL service where Curtis engineers will work with the OEM to create any custom VCL code required. • Indirect Field Orientation (IFO) vector control algorithm generates the maximum possible torque and efficiency across the entire speed range. Advanced Curtis IFO vector control provides superb drive ‘feel’, improved speed regulation and increased gradeability. • Curtis Auto-Tune function enables quick and easy characterization of the AC motor without having to remove it from the vehicle. Curtis AC controllers are fully compatible with any brand of AC motor. • Dual-Drive functionality is standard, allowing correct control of applications featuring twin traction motors. This function ensures smooth and safe operation, minimal tire wear and correct load sharing between the traction motors at all times. • Configurable CANbus connection allows communication with other CANbus enabled devices. Model 1234 is CANopen compatible and can be further customized and configured using VCL. DESCRIPTION The Curtis Model 1234 provides advanced control of AC induction motors performing on-vehicle traction drive or hydraulic pump duties. It offers vehicle developers a highly cost-effective combination of power, performance and functionality. APPLICATION Designed primarily for material handling vehicles such as warehouse trucks and small counterbalance forklifts. The Model 1234 is equally suitable for utility vehicles, golf cars and Light-On-Road applications. • Integrated System Controller - More than just a motor controller, it is also powerful system controller. It features a comprehensive allocation of multi-function I/O pins for use as analog inputs, digital inputs, contactor coil drivers and proportional valve drivers. In addition to this local I/O, this controller can use VCL to map and configure the remote I/O available on other CANbus devices, send messages to CAN displays and thus control and monitor the entire system. FEATURES Advanced functionality, compact power • High frequency, silent operation across the 0-300Hz stator frequency range. • Models available for 200-350A output at 24-48V system voltages. These are true 2 minute RMS ratings, not short duration ‘boost’ ratings. • Powerful operating system allows parallel processing of vehicle control tasks, motor control tasks and user configurable programmable logic. www.curtisinstruments.com • Advanced Pulse Width Modulation techniques produce low motor harmonics, low torque ripple and minimized heating losses, resulting in high efficiency.

MODEL 1234 F E A T U R E S continued Unmatched Flexibility • rogrammable for either traction or pump applications. P • Redundant hardware watchdog timers. • ield upgradeable software. F • Reverse polarity protection on battery connections. • ntegrated Battery state-of-charge algorithm and hour meter. I • Short circuit protection on all output drivers. • Multi-ModeTM provides user-selectable vehicle operating profiles. • Thermal cutback, warning, and automatic shutdown provide protection to motor and controller. • Fully-featured generic software and VCL for typical Warehouse Truck...

MODEL 1234 TYPICAL WIRING J1-9 SWITCH 3 COAST/MODE J1-10 SWITCH 4 LIFT J1-11 SWITCH 5 LOWER J1-12 FORWARD J1-22 REVERSE J1-33 PICK J1-14 DRIVER 1 DRIVER 2 DRIVER 3 SWITCH 6 DRIVER 4 PV DRIVER SWITCH 7 DIGITAL DRIVER 6 SWITCH 8 DIGITAL DRIVER 7 J1-6 J1-5 J1-4 J1-3 KEYSWITCH INTERLOCK J1-13 PROP. VALVE COIL RETURN ANALOG OUT (0-10) LOAD HOLD VALVE SWITCH 1/ANA 1 J1-1 PUMP CONT J1-30 KSI E/M BRAKE EMR CHECK (OPTIONAL) J1-24 MAIN EM REV. 20A J1-2 J1-19 J1-20 SWITCH 16 MAIN B+ MOTOR TEMP. INPUT J1-8 U SWITCH 2/ANA 2 V T I/O GROUND J1-15 THROTTLE POT HIGH J1-16 HYDRAULIC POT THROTTLE POT J1-7...