Step and Direction Stepper Drives

STR Series

^£132.30 STR2

PLACE ORDER

Sophisticated Current Control
•STR2: 2 A/phase
•STR4: 4 A/phase
•STR8: 8 A/phase
Anti-Resonance for Optimized Torque and Smoothness Over a Wide Speed Range
Microstep Emulation for Creating Smooth Motion Even with Low-Resolution Step Signals
Up to 20,000 Steps/Revolution
Step and Direction or CW/CCW Pulse Operation
Built-In Noise Filter on STEP and DIR Inputs
Large Family of Compatible 2-Phase Stepper Motors

Drives & Motors - View related products

Description

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. STR drives feature advanced microstepping performance and sophisticated current control with anti-resonance. Anti-resonance electronically damps motor and system resonances, which improves motor smoothness and torque over a wide speed range.

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.

NOTE: These drives require step pulses from a PLC or other controller.

SPECIFICATIONS
POWER AMPLIFIER SECTION (STR2)
Amplifier Type: MOSFET, dual H-bridge, 4 quadrant
Current Control: 4 state PWM at 20 kHz
Output Current: Up to 2.2 A/phase, depending on motor selection
Switch Selectable % of Maximum Current: 100%, 90%, 80%, 70%
Power Supply: External 12 to 48 Vdc power supply required
Idle Current Reduction: Reduction to 50% or 90%, switch selectable

POWER AMPLIFIER SECTION (STR4)
Amplifier Type: MOSFET, dual H-bridge, 4 quadrant
Current Control: 4 state PWM at 20 kHz
Output Current: Up to 4.5 A/phase, depending on motor selection
Switch Selectable % of Maximum Current: 100%, 90%, 80%, 70%
Power Supply: External 24 to 48 Vdc power supply required
Idle Current Reduction: Reduction to 50% or 90%, switch selectable

POWER AMPLIFIER SECTION (STR8)
Amplifier Type: MOSFET, dual H-bridge, 4 quadrant
Current Control: 4 state Pwm at 20 kHz
Output Current: Up to 8 A/phase, depending on motor selection Switch
Selectable % of Maximum Current: 100%, 90%, 80%, 70%
Power Supply: External 24 to 75 Vdc power supply required
Idle Current Reduction: Reduction to 50% or 90%, switch selectable

CONTROLLER SECTION
Mode Of Operation: Step and direction, Cw/Ccw
Microstep Resolution: Switch selectable: 200, 200 smooth, 400, 400 smooth, 2000, 5000, 12800, 20000 steps/revolution
Speed Range: Depends upon selected resolution; amplifier is suitable for speeds up to 50 rps
Anti Resonance: Raises the system damping ratio; eliminates midrange instability and allows stable operation to 50 rps
Waveform: Allows for fine adjustment of phase current waveform harmonic content to reduce low-speed torque ripple in the range 0.25 to 1.5 rps
Digital Noise Filter: Step pulse input: 150 kHz or 2 MHz, jumper selectable
Self Test Switch Selectable: Rotates motor 2 revolutions in each direction
Control Inputs: Step, direction, enable, optically isolated; 4 to 30 Vdc, 5 to 15 mA.
Step Input: Min pulse width = 250 ns; max pulse frequency = 2 MHz
Fault Output: Photodarlington, 80 mA, 30 Vdc max; voltage drop = 1.2 Vdc max at 80 mA
Ambient Temperature: 0 to 50°C (32 to 122°F) humidity 90% non-condensing

Place Order(Specify Model Number)

Part Number/ Desc.

Qty

Description

STR2

£132.30

Availability: 4 weeks

Step and direction stepper drive with 2A output

STR4

£260.80

Availability: 9 weeks

Step and direction stepper drive with 4A output

STR8

£321.30

Availability: 6 weeks

Step and direction stepper drive with 8A output

Accessories

OMPS150A24

Consult Sales

Availability:

Power supply with active PFC filter, 24 Vdc, 6.3A

OMPS300A48

Consult Sales

Availability:

Power supply with active PFC filter, 48 Vdc, 6.7A

OMRC-050

£208.75

Availability: 2 weeks

Regeneration clamp, 24 to 80 Vdc

Power Cord-SE

£9.93

Availability: 5 weeks

AC Power cord with stripped end termination

Recommended Motors for STR2

OMHT11-013

£144.34

Availability: 7 weeks

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

OM5014-842

Consult Sales

Availability:

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

OMHT17-075

£97.90

Availability: 12 weeks

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

OMHT17-275

£71.80

Availability: 6 weeks

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

Recommended Motors for STR4 / STR8

OMHT17-075

£97.90

Availability: 12 weeks

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

OMHT17-275

£71.80

Availability: 6 weeks

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

OMHT17-278

£84.90

Availability: 4 weeks

NEMA 17 stepper motor, 113 oz-in holding torque, 2.0 A/phase, parallel connection

OMHT23-603

£150.50

Availability: 4 weeks

NEMA 23 stepper motor, 354 oz-in holding torque, 2.5 A/phase, series connection

OMHT24-100

£95.38

Availability: 6 weeks

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

OMHT24-105

£102.72

Availability: 6 weeks

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

OMHT24-108

£182.74

Availability: 6 weeks

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

OMHT34-485

£346.36

Availability: 2 weeks

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

OMHT34-486

£447.88

Availability: 6 weeks

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

OMHT34-504

£136.17

Availability: 6 weeks

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

OMHT34-505

£187.52

Availability: 2 weeks

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

Recommended Motors for STR8

OMHT23-603

£150.50

Availability: 4 weeks

NEMA 23 stepper motor, 354 oz-in holding torque, 5.0 A/phase, parallel connection

OMHT34-485

£346.36

Availability: 2 weeks

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

OMHT34-486

£447.88

Availability: 6 weeks

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

OMHT34-487

£603.14

Availability: 2 weeks

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

OMHT34-504

£136.17

Availability: 6 weeks

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

OMHT34-505

£187.52

Availability: 2 weeks

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

OMHT34-506

£260.37

Availability: 2 weeks

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

† All amounts shown in EUR, GBP, or USD
Ordering Example: (1) STR4 Step/Direction stepper drive, 4A/phase, £260.80

Product Manuals:

Download STR4 and STR8 Series - Stepper Motor Drives

Download STR2 Series - Stepper Motor Drives