Omega Products STR2 User Manual

Stepper DriveS

75.5

HigH performance Step
anD Direction DriveS

STR Series

l Sophisticated Current Control;

STR2: 2A/phase
STR4: 4A/phase
STR8: 8A/phase

l Anti-Resonance for Optimized

Torque and Smoothness Over a
Wide Speed Range

l Microstep Emulation for Creating

Smooth Motion Even with
Low-Resolution Step Signals

l Up to 20,000 Steps/Revolution
l Step and Direction or CW/CCW

Pulse Operation

l Built-In Noise Filter on STEP

and DIR Inputs

l Large Family of Compatible

2-Phase Stepper Motors

The STR series stepper drive is a compact,
powerful, digital step and direction drive
available in three power ranges: 2 A/phase,
4 A/phase and 8 A/phase. The STR series is
ideal for applications requiring basic step and
direction control of a 2-phase step motor.

All setup is done via dip switches and a rotary
switch on the side of the drive, including
motor selection, running current, idle current,
and step resolution.

STR drives are available with a large family of
compatible 2-phase step motors, selected to
optimize performance of both the drive
and motor.

Dimensions mm (inch)

112

4 x Dia

(0.137)

3.5

(2.97)

22.5

(0.887)

25.3

(0.996)

33

(1.30)

8.9

(0.35)

STR4 shown actual size.

2 x Slot

4.3

(0.17)

22.5

(0.89)

3.2

(0.125)

(4.65)

118

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OMHT Series, visit omega.com/omht_series
for details. All models shown smaller than actual size.

Order Power

Supplies

Separately. See

omega.com

for details

RECOMMENDED MOTORS

MODEL NO. DESCRIPTION

RECOMMENDED MOTORS FOR STR2

OMHT11-013 NEMA 11 stepper motor, 15 oz-in holding torque, 1.0 A/phase

OM5014-842 NEMA 14 stepper motor, 26 oz-in holding torque, 1.0 A/phase

OMHT17-075 NEMA 17 stepper motor, 62.8 oz-in holding torque, 1.7 A/phase, parallel connection

OMHT17-275 NEMA 17 stepper motor, 62.8 oz-in holding torque, 1.7 A/phase, parallel connection

RECOMMENDED MOTORS FOR STR4/STR8

OMHT17-075 NEMA 17 stepper motor, 62.8 oz-in holding torque, 1.7 A/phase, parallel connection

OMHT17-275 NEMA 17 stepper motor, 62.8 oz-in holding torque, 1.7 A/phase, parallel connection

OMHT24-100 NEMA 24 stepper motor, 123 oz-in holding torque, 2.8 A/phase

OMHT24-105 NEMA 24 stepper motor, 177 oz-in holding torque, 4.0 A/phase

OMHT24-108 NEMA 24 stepper motor, 354 oz-in holding torque, 4.0 A/phase

OMHT34-485 NEMA 34 stepper motor, 650 oz-in holding torque, 4.3 A/phase, series connection

OMHT34-486 NEMA 34 stepper motor, 1200 oz-in holding torque, 4.1 A/phase, series connection

OMHT34-504 NEMA 34 stepper motor, 396 oz-in holding torque, 3.18 A/phase, series connection

OMHT34-505 NEMA 34 stepper motor, 849 oz-in holding torque, 3.18 A/phase, series connection

RECOMMENDED MOTORS FOR STR8

OMHT34-485 NEMA 34 stepper motor, 650 oz-in holding torque, 8.6 A/phase, parallel connection

OMHT34-486 NEMA 34 stepper motor, 1200 oz-in holding torque, 8.1 A/phase, parallel connection

OMHT34-487 NEMA 34 stepper motor, 1845 oz-in holding torque, 9.01 A/phase, parallel connection

OMHT34-504 NEMA 34 stepper motor, 396 oz-in holding torque, 6.3 A/phase, parallel connection

OMHT34-505 NEMA 34 stepper motor, 849 oz-in holding torque, 6.3 A/phase, parallel connection

OMHT34-506 NEMA 34 stepper motor, 1260 oz-in holding torque, 5.6 A/phase, parallel connection

Note: Ratings are with motor connected in parallel.

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