144V DC Motor Controller for Electric Car

Overview:

Curtis 1268 controllers are separately excited motor speed controllers designed for use in a variety of transport vehicles. These programmable controllers are simple to install, efficient, and cost effective. Typical applications include heavy-duty golf carts, personnel transports, burden carriers, and other utility vehicles.

The 1268 controller offers smooth, silent, cost effective control of motor speed and torque. The speed sensor input allows superior closed-loop control for regulating vehicle speed. Unique braking parameters allow simple, intuitive deceleration tuning. A full-bridge field winding control stage is combined with a half-bridge armature power stage to provide solid state motor reversing and regenerative braking power without additional relays or contactors.

Key Features:

• Curtis Model: 1268-5403
  • Norminal Battery Voltage (Volts): 48V (default setting) or 36V
  • Amarture 2 Minute Current Rating (amps): 400
  • Field 2 Minute Current Rating (amps): 50
  • PWM operating frequency: 16 kHz
  • Electrical isolation to heatsink: 500 V ac (minimum)
• Aluminum alloy installation panel size:
  • L300 mm x W231 mm x H8 mm
  • Installation dimensions (holes): 280 mm x 210 mm
• Assemblage Net Weight: 7.8 kg (with throttle)
• Package Weight: 9 kg (reinforced carton package, safe for international delivery)

Features Include:

• Regenerative braking, providing longer operation on a single battery charge and reducing motor brush wear and motor heating
• Adjustable brake rates, for smooth pedal-release braking
• Two user-selectable vehicle operating personalities, with vehicle top speed controlled and limited in each mode
• Motor parameters are programmable to match the characteristics of the specific motor being used
• Vehicle speed control is enhanced through feedback from a Hall effect speed sensor
• Anti-rollback function, providing improved control when throttle is released on hills
• Anti-stall function helps prevent motor commutator damage
• High pedal disable (HPD) and static return to off (SRO) interlocks prevent vehicle runaway at startup
• WalkAway™ braking feature limits any stopped or key-off rolling to a very low speed
• Auxiliary driver can be programmed for either an electromagnetic (EM) brake or a WalkAway™ relay
• Coil driver provides adjustable pull-in and holding voltages to WalkAway™ relay or EM brake
• Driver for brake lamp relay can be used to power external lights during braking
• Reverse signal driver provides a low signal any time the vehicle is traveling in reverse
• Driver outputs are short circuit protected and provide built-in coil spike protection
• Warning buzzer sounds steady in reverse, intermittent during WalkAway™ braking
• Complete diagnostics through any of the optional programmers and through the built-in Status LED
• Driver for remote Status LED enables status information to be available at a dashboard
• Sealed package is rated at IP64 and IP67
• Meets or exceeds EEC fault detect requirements.