2.5 Ton Electric Pallet Curtis Controller dc Motor Controller

Overview:

Curtis 1243 Generation 2 MultiMode™ controllers are separately excited motor speed controllers designed for use in a variety of small industrial vehicles and in material handling equipment. These programmable controllers are simple to install, efficient, and cost effective, while offering more features than the original 1243.

The 1243 GEN2 MultiMode™ controller provides smooth precise control of motor speed and torque. A full-bridge field control stage is combined with a half-bridge armature power stage to provide solid state motor reversing and full regenerative braking without additional relays or contactors. The controller’s rugged IP53 housing and packaging are built to withstand shock and vibration. State-of-the-art surface mount logic board fabrication makes the 1243GEN2 controller even more reliable than the original 1243. The 1243GEN2 is fully programmable through the Curtis Model 1313-4401 Handheld Programmer or 1314 PC Programming Station. In addition to configuration flexibility, the programmer provides diagnostic and test capability.

Key Features:

• Curtis Model: 1243-4220
• Norminal Battery Voltage (Volts): 36V (default setting) or 24V
• PWM operating frequency: 16 kHz
• Electrical isolation to heatsink (min.): 500 VAC
• KSI input voltage (minimum): 16.8 V
• KSI input current (typical):
  • 78 mA without programmer
  • 120 mA with programmer
• Logic input voltage: 7.5 V High; <1 V Low
• Logic input current 15 mA
• Overvoltage protection:
  • 24V models: cutback at approx. 30V, cutback at ≈34V
  • 36V models: cutback at approx. 45V, cutback at ≈49V
• Undervoltage protection:
  • 24V models: cutback at approx. 17V, cutback at ≈13V
  • 36V models: cutback at approx. 25V, cutback at ≈21V
• Drive Current Limit (amps): 200
  • Amature:
    • 2 Minute Current Rating (amps): 200
    • 1 Hour Current Rating (amps): 80
  • Field:
    • 2 Minute Current Rating (amps): 25/35
    • 1 Hour Current Rating (amps): 15/20
• Throttle Type: 0-5K Ω (default setting), 5K-0 Ω or 0-5V
• Ambient operating temperature range: -40°C to 50°C
• Heatsink overtemperature cutback: 85°C
• Heatsink undertemperature cutback: -25°C
• Package environmental rating: IP53
• Dimensions: L198 × W114 × H70 mm
• Net Weight: 1.45 kg
• Regulatory compliance
  • Safety, applicable portions: EN 1175-1:1998
  • EMC and EMI: EN 12895:2000
  • UL Recognized Component, UL File AU1841

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 1313-4401 Handheld Programmer or 1314 PC Programming Station 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
• Linear cutback of regenerative braking current during overvoltage
• High pedal disable (HPD) and static return to off (SRO) interlocks prevent vehicle runaway at startup
• Internal and external watchdog circuits ensure proper software operation
• Fully protected inputs and short-circuit protected output drivers.