Curtis 1243GEN2 Manual
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1 — OVERVIEW
Like all Curtis motor controllers, the 1243GEN2 offers superior operator control
of the vehicle’s motor drive speed. Features include:
✓ Interlock braking with load sensor to meet required braking distance
without unnecessary harsh braking at light loads
✓ Maintenance monitor responds to preset vehicle operating hours and
drive hours as programmed by the OEM
✓ Two hourmeters—total KSI-on hours and traction hours—and the
associated maintenance timers are built into the controller
✓ BDI calculations performed within controller
✓ Estimates motor temperature based on field resistance and cuts back
maximum speed if the motor is overheated
✓ Diagnostic checks for field open and field shorted faults
✓ Supports PWM electromagnetic brake with maximum continuous
current of 2 amps
✓ Supports Type 4 throttle
✓ Active precharge of controller capacitor bank extends life of main
contactor
✓ Compatibility with Curtis 1307/1311 handheld programmers for quick
and easy testing, diagnostics, and parameter adjustment
✓ MultiMode™ allows four user-selectable vehicle operating modes
✓ Continuous armature current control, reducing arcing and brush wear
✓ Complete diagnostics through the handheld programmer, the built-in
Status LED, and the optional 840 Spyglass display
✓ Two fault outputs provide diagnostics to remotely mounted displays
✓ Regenerative braking allows shorter stopping distances, increases battery
charge, and reduces motor heating
✓ Automatic braking when throttle is reduced provides a compression
braking feel and enhances safety
✓ Brake/Drive Interlock meets ISO stopping distance requirements
✓ Ramp restraint feature provides automatic electronic braking
that restricts vehicle movement while in neutral
✓ Meets EEC fault detect requirements
✓ Linear cutback of motor drive current during overtemperature or
undervoltage
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