Specifications

1. Could be mounted onto nema 17&23 directly
2. 2 amps, 4 amps and 8 amps peak current
3. Integrated miniature stepper driver

Miniature Size Stepper Driver Features

-     Miniature size 42.3mm*42.3mm*13.5mm (L*W*H)

-     Integrally designed to fit onto stepper motors seamlessly, as well as work standalone

-     Wide range input voltage 10-40VDC

-     Max 2A / 4A / 8A adjustable output current

-     1 to 16^th micro step resolution

-     Automatic Current Reduction

-     Dual full H-bridge with PWM constant current control stepper driver

-     Enable/shutdown input for power saving

-     Optoisolated inputs with common anode

-     Idle Current Reduction

-     Die-cast aluminum enclosure, improve heat radiation and durability

 

Description

UIM240xx Miniature Stepper Driver is a series of miniature, high performance stepper motor driver.  They can be mounted onto NEMA 17 / 23 / 34 and 42 series stepper motor seamlessly through corresponding flanges. The thickness of these Drivers is less than 14 mm.  UIM24002 is capable to provide 0-2A adjustable current. UIM 24004 is capable for 1.6-4A adjustable current output and UIM24008 is capable for 2A-8A adjustable current output.  Their mixed-decay current control reduces the back-EMF effect under high motor speed and improves the performance. Except that UIM24002 takes 10-35VDC input, UIM240xx series Drivers can work on 12 to 40VDC input. Enclosure is made of die-cast aluminum which provides a rugged durable protection and improves the heat dissipation.

 

Description of stepper driver Screw Terminals

Terminal No. / Color	Description			Input
				MIN    NOM    MAX	UNIT
1 / Red	V+	Supply voltage	UIM24004-8	12                  40	VDC
			UIM24002	10                  35
2 / Black	GND	Supply voltage ground		0	VDC
3 / White	Vcc	Opto-coupler common anode		5(1)	VDC
4 / Green	DIR	Direction input(2)		GND               Vcc	VDC
5 / Cyan	STEP	Stepping pulse input(3)		GND               Vcc	VDC
6 / Blue	EN	Enable the Driver(4)		GND               Vcc	VDC

Note:

(1)     Please refer to “optically isolated input interface” section for details.

(2)     Input is considered high level if this terminal is not connected.

(3)     Low-level pulse duration should > 8μs.  Maximum pulse frequency is 50 KHz.

(4)     An active low-level input shuts down power supply to the motor. High-level input or left open makes the Driver fully working. When awaken from shutdown mode, wait 1 millisecond before sending pulse.

Note: To avoid damaging, make sure the phase winds are connected correctly. Resistance between leads of different phases is usually > 100KW.  Resistance between leads of the same phase is usually < 100W.

 

Miniature stepper driver