Curtis 1206SX Controller 36V 300A DCS Motor Speed Controller

Description

Curtis 1206SX Main Features

1.36V/300A high current design

1206SX-005 is a 36V, 300A DCS controller that can provide high motor drive current for electric vehicles, suitable for golf carts and tool vehicles that require strong acceleration and climbing capabilities. The 1206SX series listed by Cloud Electric also includes the 350A model and indicates that this series of products can cover different current levels ranging from approximately 300A to 600A.

It should be noted that 300A represents the current level of the controller and does not mean that the vehicle will continue to output 300A under any operating conditions. The actual current will be affected by factors such as load, throttle command, battery status, and controller parameters.

2.Specially designed for DCS drive systems

The Curtis 1206SX belongs to the DCS speed controller and is mainly used for vehicles equipped with Drive Control System in E-Z-GO. This controller is suitable for:

• E-Z-GO TXT
• E-Z-GO Medalist
• Models related to the 1995-2000 model year
• Electric vehicles equipped with DCS system
• Vehicles using independent excitation (SepEx) motors

Among them, Lift Parts Warehouse specifically pointed out that the 1206SX uses a 9-pin connector and identifies the corresponding vehicle system through pin arrangement.

3.9-pin connector design

An important identification feature of the 1206SX series is the 9-pin connector. The controller actually has 10 needle positions, one of which is empty, thus forming:

• The first row has 7 pins
• 1 vacancy
• Back 2 pins
• A total of 9 valid pins

Meanwhile, the controller is also equipped with:

• Three larger main terminals: A1, B -, A2/B+
• Two smaller terminals: F1, F2
• 9-pin control connector

This terminal configuration is crucial for confirming whether the controller is compatible with the original vehicle.

4.Adjustable driving performance

The 1206SX has adjustable settings that can be adjusted according to the actual driving needs of the vehicle, such as adjusting control performance based on flat or sloping conditions. The product description also emphasizes that upgrading the controller can improve the vehicle’s speed, acceleration, and torque performance, and claims that the upgraded torque can reach about twice that of the original system.

Therefore, this controller is not only suitable for fault replacement, but also for upgrading the drive system of some eligible vehicles.

5.High efficiency and low maintenance

Curtis 1206SX is a high-efficiency controller that can reduce maintenance requirements and battery energy consumption.

Compared to traditional mechanical control methods, electronic speed control can adjust motor power more quickly, enabling vehicles to achieve smoother responses during acceleration and deceleration.

6.Reduce heat generation

This controller can generate about 60% less heat compared to similar controllers. This design helps to reduce the thermal load during the operation of the controller.

It should be noted that the “about 60%” refers to the promotional data provided on the reference product page, and the actual temperature rise may be affected by factors such as motor load, battery, current, ambient temperature, and vehicle operating conditions.

7.Robust packaging structure

The 1206SX adopts a fully encapsulated structure with epoxy resin, and has waterproof, corrosion-resistant, and anti vibration characteristics, which is conducive to meeting the working environment requirements of golf carts and outdoor electric vehicles.

Some after-sales versions further label the product as having waterproof, corrosion-resistant, and anti vibration capabilities, but alternative models from different manufacturers may have different levels of protection. Therefore, the IP rating of a certain after-sales version cannot be directly regarded as the original specifications of all Curtis 1206SX products.

8.Fault diagnosis function

The 1206SX product has fault diagnosis function, which can be used to help identify problems with the controller or vehicle drive system.

The Lift Parts Warehouse data also states that before installing 1206SX-005, pre installation testing of the vehicle and motor should be carried out according to the installation instructions provided with the product to distinguish whether the fault comes from the controller or the vehicle itself.

Product Parameters

Compatible Models and Alternative Part Numbers

Curtis 1206SX is often associated with the following numbers:

• 1206SX
• 1206SX-005
• 1206DCS
• 73144-G01
• 73144-G02
• 73144-G03
• 73144G04
• 73144-G05
• 73144-G06
• 1206SXRB

Among them, Lift Parts Warehouse lists 1206SX, 73144-G01 to 73144-G06 as relevant part numbers; A replacement product page on eBay lists 1206DCS, 1206SX, 73144G06, 73144-G06, 73144G01, and 73144-G01 as cross reference numbers.

Note: These numbers can be used as a reference for selection and search, but should not be used separately as a basis for direct replacement. During actual replacement, the vehicle model, production year, DCS system, motor type, and connector should be confirmed simultaneously.

Applicable Vehicles and Application Fields

E-Z-GO Golf Cart

One of the main applications of Curtis 1206SX is the E-Z-GO DCS golf cart.

The reference clearly states that the 36V 300A version is suitable for E-Z-GO TXT and Medalist models using DCS system. Lift Parts Warehouse further marked its application scope as related TXT and Medalist electric golf carts and tool vehicles from 1995 to 2000.

Tool vehicles

In addition to golf carts, this type of DCS controller can also be applied to some electric tool vehicles and special vehicles that use the same drive system.

Remanufacturing, Repair, and After-sales Replacement Versions

1.Remanufacture OEM products

The product is Remanufactured and comes with a 6-month limited warranty, which can be extended to 36 months in some cases.

2.Maintenance services

Some suppliers provide controller maintenance services, not just selling replacement parts. Therefore, if the original appearance and core components of Curtis 1206SX can still be repaired, it is also possible to consider repairing the original controller.

3.After sales substitute products

The product is clearly labeled as Aftermarket Replacement and labeled with:

• New products
• 9-pin interface
• 36V / 300A
• Suitable for E-Z-GO electric vehicles
• Directly replace the type
• 6-month warranty
• Do not provide installation instructions

Therefore, consumers need to distinguish between “original/remanufactured OEM” and “aftermarket substitute products” when making purchases.

What Should be Checked Before Installation?

1.Confirm battery voltage

Ensure that the vehicle is using a 36V battery system.

2.Confirm the type of motor

1206SX is mainly designed for SepEx motors and should not be directly used for other types of motors.

3.Confirm the DCS system

The vehicle needs to adopt the corresponding DCS drive control system.

4.Confirm 9-pin interface

Check if the original controller is a 9-pin connector and verify the pin position arrangement.

5.Confirm the main terminal

The reference material shows that the 1206SX-005 controller has:

• A1
• B-
• A2/B+
• F1
• F2

Waiting for the terminal. During installation, the corresponding wiring diagram should be followed instead of relying solely on the appearance of the terminals for connection.

6.Test the motor before installation

Lift Parts Warehouse recommends checking vehicle components such as motor windings before installing the controller. For example, when the motor is disconnected, a multimeter can be used to check the resistance between A1 and A2, and the requirements given in the relevant information are 0.3 Ω to 1 Ω. This can avoid mistaking the motor or circuit faults of the vehicle itself for controller faults.

Summary

The main advantages of Curtis 1206SX Controller include:

• 36V/300A high current output capability
• Specially designed for DCS drive systems
• Support independent excitation (SepEx) motors
• Compatible with E-Z-GO TXT and Medalist models
• 9-pin connector design
• Support adjustable driver parameters
• Improve vehicle acceleration and torque performance
• High efficiency, low maintenance
• Reference materials claim to reduce heat generation by approximately 60%
• Equipped with fault diagnosis function
• Epoxy resin encapsulation structure
• Has waterproof, corrosion-resistant, and vibration resistant characteristics
• There are multiple supply forms available in the market, including remanufacturing, maintenance, and after-sales replacement

WIRING DIAGRAM

FAQ

Q1: What is Curtis 1206SX Controller?

A: Curtis 1206SX is a 36V DCS motor speed controller used for electric vehicles, with a common specification of 300A. It is mainly matched with E-Z-GO golf carts and tool vehicles that use independent excitation motors.

Q2: What are the volts and amperes of Curtis 1206SX?

A: The common specifications for 1206SX-005 are 36V and 300A. Cloud Electric also lists the 350A model of the 1206SX series, so the 1206SX is not limited to a single current specification, and the complete model should be confirmed when purchasing.

Q3: Which E-Z-GO models is Curtis 1206SX suitable for?

A: According to reference materials, the 36V 300A DCS version is mainly suitable for E-Z-GO TXT and Medalist models equipped with DCS systems, and is commonly used from 1995 to 2000.

Q4: Is Curtis 1206SX a 9-pin controller?

A: Yes, it is. 1206SX-005 uses a 9-pin connector. According to relevant information, it has 10 needle positions, one of which is empty, so 9 effective pins are actually used.

Q5: What type of motor is used for 1206SX?

A: This controller is mainly used for Separated Excited Motors (SepEx). If the vehicle uses other types of motors, the compatibility of the controller should be confirmed first.

Q6: What is the difference between 206SX and 1206SX-005?

A: ‘1206SX’ is usually used to refer to the entire model series, while ‘1206SX-005’ is a common specific model in the market. Please refer to the sales page to clearly label 1206SX-005 as a 36V 300A DCS controller. It is still recommended to refer to the complete model and nameplate information of the original controller for specific replacement.

Q7: Can 1206SX be directly replaced with 73144-G01 or 73144-G06?

A: Multiple sales materials list 73144-G01, 73144-G06, and 1206SX as relevant cross reference numbers, but whether they can be directly installed still requires confirmation of the vehicle’s DCS system, 36V voltage, independent excitation motor, 9-pin interface, and terminal arrangement.

Q8: Is Curtis 1206SX a new factory product?

A: Not necessarily. There are also remanufactured OEM, repair parts, and after-sales replacement parts in the market. For example, the Lift Parts Warehouse page clearly indicates that its products are remanufactured products, while the eBay reference products provided are clearly labeled as aftermarket replacement parts. Confirm the product status when purchasing.

Q9:Can 1206SX increase the torque of a golf cart?

A: According to the reference product information, upgrading the 1206SX can improve the vehicle’s speed, acceleration, and torque performance, and claims that the torque can reach about twice that of the original system. However, the actual vehicle performance also depends on the parameters of the motor, battery, transmission system, tires, and controller, so this data should not be understood as all vehicles achieving the same actual improvement.

Q10: What is the most important thing to confirm before purchasing Curtis 1206SX?

A: The most important thing is to confirm the following information:

1. Vehicle brand and model;
2. Year of vehicle production;
3. Is it a DCS system;
4. Is the battery 36V;
5. Is the motor an independent excitation (SepEx) motor;
6. Is the original controller 9-pin;
7. Whether the terminals A1, B -, A2/B+, F1, and F2 are matched;
8. Complete model and part number of the original controller.

Only when these conditions are basically matched can we more confidently determine whether 1206SX is suitable for direct replacement.

Q11：Does Curtis 1206SX need programming?

A: According to Cloud Electric, the programmable version can be programmed using free software on a PC or laptop. However, the status and specific version of different 1206SX products may vary, so it is necessary to confirm whether the selected controller has the corresponding programmable functions when purchasing.

Q12: Why do we need to check the motor before installing 1206SX?

A: When a vehicle is unable to move, experiences abnormal acceleration, or lacks power, the malfunction may not necessarily come from the controller. Lift Parts Warehouse recommends checking the motor winding and other components according to the installation manual before installation, such as checking the resistance between A1 and A2. This can avoid mistakenly replacing the controller in the event of a malfunction in the motor itself.