CANbus
CANbus
A controller-area network (CAN or CAN-bus) is a serial communications bus standard, allowing electronic control modules to communicate with each other within a vehicle. It was originally designed by Bosch specifically for automotive applications. CANopen is an international standard, and is a higher-layer CAN protocol for embedded control systems. CANopen has become the standard communication bus for most electric vehicle applications including forklift trucks and other materials handling vehicles. SAE J1939 is an alternate higher-level protocol that is commonly used for IC engine-powered vehicle applications, such as agricultural vehicles, construction vehicles, and automobiles. Most recent Curtis controllers adhere to the CANopen protocol and support the DS401 IO-device profile standard. Earlier Curtis CAN controllers adhere to the CAN2.0B standard, but run proprietary higher-level protocols called Curtis Nodes 1.0 and Curtis Nodes 2.0. Please note that SAE J1939-compliant variants of certain Curtis products are possible -please contact us for more information.
Plug Braking
Plug Braking
Plug braking allows a vehicle to be braked electrically by selecting the opposite direction with the forward/reverse switch without releasing the throttle. When the motor is reversed, the armature acts as a generator and the controller regulates the current in the motor field winding to give an appropriate level of plug braking torque. The vehicle brakes smoothly to a stop, then accelerates in the other direction. Plug braking is supported on most Curtis Series controllers intended for traction control applications.

Series Motor Controllers

Curtis invented the world's first practical MOSFET series motor controller in the 1980's. Millions of untis are in use in worldwide, for every imaginable application. Today, Curtis Series Controllers are available in a wide range of models, from simple analog controllers to sophisticated, microprocessor based controllers with CANbus communications and comprehensive diagnostics. Simple, tough and easy to troubleshoot, Curtis series controllers offer excellent value for many applications and markets.

Models
Vehicle Type
Application
Voltage (VDC)
Armature Current
(2 min) [A]
Plug Braking
Programmable
Parameters
Line Contactor
Driver
CANbus
IP Rating
1204M/1205M
Golf/Utility
Traction or Pump
36-72

275-500
Option

Yes

Option
No
IP 54
Data Sheets
Manuals
FAQs
1207B
Material Handling
Traction
24

250-300
Yes

Yes

Yes
No
IP 54
Data Sheets
Manuals
FAQs
1209M
Utility
Traction or Pump
36-72

275-450
Option

Yes

Option
No
IP 65
Data Sheets
Manuals
FAQs
1221M
Utility
Traction or Pump
36-72

275-550
Option

Yes

Option
No
IP 65
Data Sheets
Manuals
FAQs
1221C
On-road EV
Traction
72-120

400
Yes

No

No
No
IP 65
Data Sheets
Manuals
FAQs
1231C
On-road EV
Traction
72-144

500-550
Yes

No

No
No
IP 65
Data Sheets
Manuals
FAQs
1253
Material Handling
Pump
48-80

600
No

Yes

Yes
No
IP 54
Data Sheets
Manuals
FAQs