A compact, powerful, digital step & direction drive available in two power ranges: 4 A/phase and 8 A/phase. Great for OEM applications requiring basic step & 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.
| AMPLIFIER TYPE |
Dual H-Bridge, 4 Quadrant |
| CURRENT CONTROL |
4 state PWM at 20 Khz |
| OUTPUT CURRENT |
STR4: 0.25-4.5 A/phase (peak-of-sine)
STR8: 0.5-8.0 A/phase (peak-of-sine)
Motor current is selected using both the motor select rotary switch and the percentage current dip switches. |
| POWER SUPPLY |
STR4: External 24-48 VDC Power Supply Required
STR8: External 24-75 VDC Power Supply Required |
| PROTECTION |
Over-voltage, under-voltage, motor/wiring shorts (phase-to-phase, phase-to-ground). |
| IDLE CURRENT REDUCTION |
Dip switch selectable idle current setting of 50% or 90% of running current. |
| MODES OF OPERATION |
Step & Direction or CW/CCW Pulse; selected via jumper underneath drive cover. |
| STEP RESOLUTION |
Dip switch selectable resolution: 200, 200 SMOOTH, 400, 400 SMOOTH, 2000, 5000, 12800, or 20000 s/r. |
| MICROSTEP EMULATION |
Performs high resolution stepping by synthesizing fine microsteps from coarse steps. Available with full (200 SMOOTH) and half (400 SMOOTH) step resolutions. |
ANTI-RESONANCE
(Electronic Damping) |
Raises the system damping ratio to eliminate midrange instability and allow stable operation throughout the speed range and improves settling time. Dip switch setting for range of load-to-motor inertia ratio. |
| SELF TEST |
Dip switch for automatically rotating step motor 2 revolutions back and forth. |
| STEP INPUT |
5-24 VDC, optically isolated, differential. Minimum pulse width = 250 ns. Maximum pulse frequency = 2 MHz.
Function: Step, CW Pulse
Filter: Jumper underneath drive cover for selecting 150 kHz or 2 MHz filter frequency. |
| DIRECTION INPUT |
5-24 VDC, optically isolated, differential. Minimum pulse width = 250 ns. Maximum pulse frequency = 2 MHz.
Function: Direction, CCW Pulse
Filter: Jumper underneath drive cover for selecting 150 kHz or 2 MHz filter frequency. |
| ENABLE INPUT |
5-24 VDC, optically isolated, differential.
Function: Disable motor when closed. |
| FAULT OUTPUT |
30 VDC max, 80 mA max, optically isolated, sinking or sourcing.
Function: Closes on drive fault. |
| ROTARY SWITCH |
Selects from pre-defined table of compatible motors (see below). |
| DIP SWITCHES |
SW1, SW2: Select running current as percentage of motor's rated current: 100%, 90%, 80%, or 70%.
SW3: Select range of load-to-motor inertia ratio: 0-4X or 5-10X.
SW4: Select idle current setting of 50% or 90% of running current.
SW5, SW6, SW7: Select step resolution: 200, 200 SMOOTH, 400, 400 SMOOTH, 2000, 5000, 12800, or 20000 s/r.
SW8: Select Self Test feature to automatically rotate motor 2 revolutions back and forth. |
| JUMPERS |
Jumper underneath drive cover for selecting pulse type: Step & Direction or CW/CCW Pulse.
Jumper underneath drive cover for selecting input noise filter frequency: 150 kHz or 2 MHz. |
| DIMENSIONS |
4.65 x 3.0 x 1.3 inches (not including mating connectors). |
| WEIGHT |
10.8 oz including mating connectors. |
| AMBIENT TEMPERATURE |
0-50°C (32-122°F) (STR drive must be mounted to suitable heatsink). |
| HUMIDITY |
90% non-condensing. |
| AGENCY APPROVALS |
RoHS
CE (EMC): EN 61800-3:2004
CE (LVD): EN 61800-5-1:2003 |
1-800-525-1609
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