UIM240XX are micro-high-performance stepping motor driver. Its biggest feature is the small size and the driving ability. They can be mounted onto NEMA 17/23/34/43 series stepping motor seamlessly through corresponding flanges. The UIM240L02 provide 0-2A adjustable peak current; UIM240C04 provide 1.5-4A adjustable peak current; UIM240C08 provide 3-8A adjustable peak current. Its high-speed current compensation can compensate for the impact caused by back-EMF when the motor is running at high speed. Besides UIM240L02 using 12-28VDC for supply, UIM240XX series drivers work on 12-38 VDC power supply. The enclosure is made of die-cast aluminum which provides a rugged, durable protection and improves the heat dissipation.

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Stepping Motor Port
A+ /A-Stepping motor's A phase wiring
B+/ B-Stepping motor's B phase wiring
Connection Port
1V+Positive Voltage: 12-48 VDC (Note: Max voltage is different between 242Lxx, 242Cxx and 242Hxx)
2GNDGround voltage: 0V (Positive and negative can not be wrong)
3VCCCommon anode input, positive electrode of pulse, direction, and off-line signals is connected to the terminal
4DIRDirection signal input, High/ Low-level key for rotation direction control and vacancy for the high level
5STPStep pulse input, the falling edge is a valid pulse
6ENAOff-line signal input. Low level means the rotor in a free state, high or vacant means the motor be controlled


Micro-intergrated Design

• Miniature size 42.3mm x 42.3mm x 42.3mm

• Integral design design to fit most motors, work independently as well

• Made of die-cast aluminum which provide a rugged, durable protection and improves the heat dissipation

Motor Drive Characteristics

• 12-40VDC Input voltage (UIM240L02 10-28VDC)

• Peak 2A/4A/8A Adjustable output current

• 1 to 16th micro stepping, dual full H-bridge with PWM constant current control, online controlled offline/enable

• Electro-optical isolation inputs. standard common cathode anode single pulse input

• Automatic current reduction by half

• Highest frequency 12KHz/1 stepping 200KHz/1/16 micro-stepping



Catalog Page: UIM240.pdf