Curtis AC Controller 1238-6501 48/ 80V 550A For Electric Golf Cart Forklift Sightseeing Vehicle

Curtis AC controller 1238-6501 48/80V 550A for EV golf cart forklift truck sightseeing car Specifications:PWM operating frequency: 15 kHzElectrical isolation to heatsink (min.): 500 VACPWM operating frequency: 10 kHzMaximum encoder frequency: 15 kHzMaximum controller output frequency: 300 HzHeatsink overtemperature cutoff:

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Curtis AC controller 1238-6501 48/80V 550A for EV golf cart forklift truck sightseeing car

Curtis AC Controller 1238-6501 48/80V 550A for EV Golf Cart Forklift Truck Sightseeing Car



  • PWM operating frequency: 15 kHz
  • Electrical isolation to heatsink (min.): 500 VAC
  • PWM operating frequency: 10 kHz
  • Maximum encoder frequency: 15 kHz
  • Maximum controller output frequency: 300 Hz
  • Heatsink overtemperature cutoff: linear cutback starts at 85°C; complete cutoff at 95°C
  • Heatsink undertemperature cutoff: complete cutoff at -40°C
  • All low power connections are made through a single 35-pin AMPSEAL connector


CURTIS 1238 AC induction motor controllers deliver smooth power unlike any previous vehicle control system. They provide unprecedented flexibility and power through inclusion of a field-programmable logic controller embedded in a state-of-the-art motor controller.

The embedded logic controller runs a fully functional field-oriented AC motor control operating system (OS) that can be user-tailored via parameter modification. The OS also contains logic to execute OEMdeveloped software, called VCL, that can be used to enhance the controller capabilities beyond the basics.

VCL (Vehicle Control Language) is an innovative software programming language developed by CURTIS. Many electric vehicle functions are uniquely built into the VCL code, and additional functions can be OEM-controlled using VCL code. VCL opens new avenues of customization, product differentiation, and responsiveness to the market.

The CAN bus communications included in the 1238, as well as in many other CURTIS products, allow these AC induction motor controllers to be part of an efficient distributed system. Inputs and outputs can be optimally shared throughout the system, minimizing wiring and creating integrated functions that often reduce the cost of the system. CURTIS 1238 controllers are the ideal solution for traction, hoist, dual drive, and other motor drive and vehicle control needs.

The 1238 controllers are fully programmable through the CURTIS Model 1313-4331 Handheld Programmer or 1314 PC Programming Station. The programmer provides diagnostic and test capability in addition to configuration flexibility.

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Key Features:

  • Increased Performance, Improved functionality
    • Higher performance form, fit and functional replacements for earlier CURTIS Model 1238 AC controllers.
    • CE marked as a programmable safety device under EN ISO 13849-1.
    • Models available for 550 output at 48-84V system voltages. These are true 2 minute RMS ratings, not short duration 'boost' ratings.
    • Enhanced 64MHz micro and additional FLASH memory doubles the available VCL code space and provides more than twice the VCL execution speed.
    • Six additional VCL-configurable CAN "mailboxes" significantly increases CAN master capabilities.
    • Advanced Pulse Width Modulation techniques produce low motor harmonics, low torque ripple and minimized heating losses, resulting in high efficiency.
  • Unmatched Flexibility
    • Easily programmable through the CURTIS Model 1313-4331 Handheld Programmer or 1314 PC Programming Station.
    • Programmable for either traction or pump applications.
    • Field upgradeable software.
    • Integrated Battery state-of-charge algorithm and hour meter.
    • Fully-featured generic software and VCL for typical Warehouse Truck applications is included.
    • Comprehensive programming options and VCL allow other applications to be easily supported.
    • CURTIS hand-held or PC Windows programming tools provide easy programming and powerful system diagnostic tools.
    • Integrated status LED provides instant diagnostic indication.
  • Robust Safety and Reliability
    • Dual Microprocessor architecture cross-checks critical circuits, logic, and software functions to ensure the highest possible functional safety performance level is achieved.
    • Insulated Metal Substrate power base provides superior heat transfer for increased reliability.
    • Fail-Safe power component design.
    • Reverse polarity protection on battery connections.
    • Short circuit protection on all output drivers.
    • Thermal cutback, warning, and automatic shutdown provide protection to motor and controller.
    • Rugged sealed housing and connectors meet IP65 environmental sealing standards for use in harsh environments.
  • Meets or complies with relevant US and International Regulations
    • EMC: Designed to the requirements of EN12895.
    • Safety: Designed to the requirements of:
      • EN1175-1:1998+A1:2010
      • EN (ISO) 13849-1
    • IP65 Rated per IEC 60529.
    • UL recognized per UL583.

Main Products:

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Our Company:Curtis AC Controller 1238-6501 48/80V 550A for EV Golf Cart Forklift Truck Sightseeing Car

Package & Shipping 

Package:Normally we use the standard exporting packaging. We also can according to clients' request .

 Shipping : 

1. By Couriers: DHL, UPS, FEDEX, TNT are the main courier  we are co-operating at present.

2. By Air: Delivery from the Shanghai airport to customers' destination city air port.

3. By Sea: Delivery from the Shanghai sea port .
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Q1. Can I have a sample order?

A: Yes, we welcome sample order to test and check quality.

Q2. What about the lead time?

A: Samples arrived often need 3-5 days.

Q3. Do you have any MOQ (minimum order quality)limit?

A: Low MOQ, 1pc for sample checking is available.

Q4. How do you ship the goods and how long does it take to arrive?

A: We often ship by DHL, UPS, FedEx or TNT. It usually takes 3-5 days to arrive. Airline and sea shipping is also optional.

Q5. How to proceed an order?

A: Initially, let us know your requirements or application. Besides, We quote according to your requirements or our suggestions. Thirdly, customers confirms the samples and places deposit for formal order. Finally, We arrange the production.

Q6. Is it acceptable to print my logo on the product?

A: Yes. Please inform us formally before our product and confirm the design firstly based on our sample.

Q7: Do you offer guarantee for the products?

A: Yes, we offer one-year warranty for our products.

Q8: How to deal with the flaw?

A: Our products are produced in strict quality control system and the percent of pass is often maintained over 99.8%.

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