L/R Stepper Motor Driver 39105, Unipolar L/R Drive, Bipolar L/R Drive

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	Size 11 Double Stack Non Captive Linear Actuator
	Size 11 External Double Stack Linear Actuator
	Size 14 with Integrated Connector

L/R Driver 39105

Enable / disable control (on board/remote)	Y	Y
Direct control (on board/ remote)	Y	Y
Single Step	Y	Y
Full Step (2 Phase on)	Y	Y
Full Step wave (1 phase one)	Y	n/a
Half Step	Y	n/a
Step Input	Y	Y

HSI unipolar/bipolar L/R (Part No. 39105) is supported by HSI’s outstanding customer application assistance. The unipolar/bipolar L/R (Part No. 39105) drive circuit is able to run both unipolar or bipolar stepping motors. The unipolar motor has 6 leads (center-tapped coils). This type of arrangement is electronically simple to operate. However, as compared to the bipolar motor, performance is reduced to 70% since only half of the copper is used at any one time. The bipolar motor has 4 leads and gets maximum performance. This arrangement, however, requires reversing the current in each motor phase which makes the electronics a little more elaborate.

Drives are available from stock and are ideal for the initial as well as production phases of your project. HSI motors will deliver rated performances when controlled by these drivers.

Tech Data
Size: 3.0" x 3.5" x 1.5" (76.2 mm x 88.9 mm x 38.1mm)
Power Requirement: +7.5 VDC to + 32 VDC
Unipolar Current Rating: 75 A/Ø Cont. 1.5 A/Ø Peak
Bipolar Current Rating: 2 A/Ø Cont. 3.0 A/Ø Peak
Motor Speed Control: Variable, 10 to 2000 steps/sec.

SPECIFICATIONS - L/R DRIVER 39105

Input Voltage	7.5 to 32 Vdc
Motor Direction	Selected via on-board switch or external control via input/output (I/O) connector
Motor Enable	Enabled/Disabled via on-board switch or external control via input/output (I/O) connector
Step Rate	Single Step Operation: via on-board push button switch Continuous Operation: via on-board potentiometer controlled oscillator (10 Hz to 2 Khz) External control: via I/O Connector
Unipolar Drive	4 phase stepper motor driver based on Allegro (Sprague) p/n UCN5804B Motor Current: .75 A/phase continuous, 1.5 A/phase peak Stepping Modes: (switch selectable) Full step - 2 phases ON, Full step wave - 1 phase ON, Half Stepping
Bipolar Drive	Dual full bridge motor driver based on Allegro (Sprague) p/n UDN2998W Motor Current: 2 A/phase continuous, 3 A/phase peak Stepping Modes: Full step - 2 phases ON only
Power Supply	7.5 Vdc minimum 32 Vdc maximum

DIMENSIONAL DRAWING - L/R 39105

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