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The separately excited motor speed controller, Curtis Controller Model 1268-5501, operates at a high frequency of 16 kHz, making them a noiseless and cost-efficient choice as they allow smooth control of brake, torque, and speed. It is designed to suit heavy-duty transport vehicles ranging from high-power demand golf carts to utility vehicles.

The Curtis 1268-5501 is a 36-48-volt model with 500 amperes current limit and utilizes a 0-5K ohms throttle input. It weighs 3.9 kg and is 229 mm in length, 178 mm in width, and 81 mm in depth. The design is particularly similar to Curtis 1266 but is more suitable for heavier applications. The design is particularly similar to Curtis 1266 but is more suitable for heavier applications. This controller has regenerative braking and programmable parameters as its key features. It also has well-protected components, cutback functions, mobilization control, and WalkAway feature among others.

🔵Specifications:

NOMINAL VOLTAGE RANGE	36-48 V
MINIMUM ELECTRICAL ISOLATION	Due to Heatsink: 500 VAC
LOGIC INPUT
Power Input Voltage	16.8 V
Power Input Current	W/o Programmer: 160 mA W/ Programmer: 200 mA
Voltage	High: Greater than 20 V Low: Less than 7.5 V
Current	10 mA
CURRENT LIMIT	500 A
2 MINUTE RATING	Armature: 500 A Field: 50 A
OPERATING FREQUENCY	16 kHz
THROTTLE INPUT	0-5K ohms
TEMPERATURE
Ambient (Operational)	-40°C to 50°C
Under temperature Cutback (Heatsink)	-25 °C (50% armature current)
Overtemperature Cutback (Heatsink)	Starts at 85 °C Cutoff finishes at 95°C

🔵Physical Specifications

🔵Features

Feature	Purpose
Regenerative Braking	Ensures longer operation, reduces motor heating, and decreases brush wear
Adjustable and Programmable Parameters	A feature allowing control of brake, speed, and torque and to match motor requirements
MultiMode input	The top speed of the vehicle is controlled and with applied limits along with 2 operating personalities
Hall Effect Speed Sensor	The speed control is improved due to this feature
Anti-rollback function	When driving uphill, the vehicle is inhibited to roll backward
Anti-stall function	Protects motor commutator from harm
High Pedal Disable	Allows a safe start by monitoring the status of the throttle. If the vehicle is started with an applied throttle, this feature disables it from operating until the throttle is returned to the neutral position
WalkAway braking	The vehicle can only operate at low speeds when off
Reverse Signal Driver	If the vehicle is reversing, it gives a low signal
Short Circuit Protection	Outputs and has integrated protection from coil spike
Buzzer Sound	Reverse: Steady WalkAway Braking: Intermittent
Status LED	Allows viewing of diagnostics
Plastic Cover	Helps in resisting splashes
Easy Installation	No further alterations are necessary
IP64 and IP67	Ingress Protection (IP) rating that protects the controller from the rugged environment

ACCESSORIES COMPATIBLE WITH CURTIS 1268

Curtis 1314 - a compatible 32-bit application that runs on personal computers with Windows as an operating system that functions similarly to the handheld Curtis controller.

Curtis 1311 - a programmer that assists in parameter control and system diagnostics.

🔵Features:

Original standard，Easy to install.
We test every product before shipment to ensure that you have a good use of the physicalexamination, any questions you can contact us at any time.
2 Years Warranty, 30 days hassle free return，Enjoy worry-free shopping！

🔵Package Includes:

DIMENSIONS

WIRING DIAGRAM

Wiring Diagram for 1268 with EM brake

Wiring Diagram for 1268 with WalkAway function