20V ~ 50VDC 0.1A - 10A NEMA23 Closed Loop Stepper Motor Driver JK-HSD57
Features of closed loop stepper motor
- Step and direction control
- Closed position loop for no loss of movement synchronization
- Operating voltage: 20-50 VDC
- Load based output current of 0.1 - 10 A
- High torque at starting and low speed
- No torque reservation
- High stiffness at standstill
- Significantly reduced motor heating
- Smooth motor movement and extra low motor noise
- Quick response, no delay and zero settling time
- No loss of steps; no hunting; no overshooting
- Plug-and-play and no tuning
Descriptions of NEMA23 stepper driver
- JK-HSD57 is one of the models in Jkongmotor series easy servo drives which can take 20-50 VDC operating voltage and output 0.1 -10A continuous load-based current. It is capable of driving NEMA 17, 23, 24 and 34 easy servomotors (stepper motors with encoders) with the position loop closed in real time.
- Based on latest DSP technology and adopting Novo's advanced control algorithm, JK-HSD57 easy servo drive applies servo control on easy servo motors. When adopted with an easy servo motor, it combines features of both open loop steppers & brushless servo systems, and offers many unique advances features for excellent motion control system performance.
- When an JK-HSD57 easy servo drive is implemented with a novo SC series easy servo motor, there is No Configuration Needed for almost all applications. The output resolution from JK-HSD57 with the output resolution defaulted to output resolution of 2,000 pulses per resolution (equal to 10 microstep in 2-phase stepper systems). Via DIP switches, a user can also easily change the output resolution to one of 15 output resolutions 400 to 51,200 (equal to 2-256 microstep in 2-phase stepper systems). With novo configuration software, ProTuner, an advanced user can also set custom settings of resolution, current & position loop parameters, idle current percentage, etc.
Applications
With many unique advanced features, JK-HSD57 easy servo systems are ideal for many industries to upgrade stepper performance or replace brushless servo systems in many applications.
Jkongmotor OEM clients have successfully implemented JK-HSD57 driven easy servo systems in applications such as small-to-large size CNC routers, CNC mills, plasmas, large-scale laser cutters / engravers, labeling equipments,robotics, gemstone processing machines, pick & place machines, X-Y tables.
Electrical Specifications
| Parameter | Min | Typical | Max | Unit |
| Input Voltage (JK-HSD57) | 20 | 36 48 | 50 | VDC |
| Input Voltage (JK-HSD57C) | 24 | 36 48 | 80 | VDC |
| Input Voltage (SC8680C) | 24VAC | 60AC | 80VAC 100VDC | VVDC |
| Output Current | 0.1 | - | 10(Peak) | A |
| Pulse Input Frequency | 0 | - | 200 | kHz |
| Logic Signal Current | 7 | 10 | 16 | mA |
| Isolation Resistance | 500 | - | - | MΩ |
Protection Indications
The green indicator turns on when power-up. When drive protection is activated, the red LED blinks periodicity to indicate the error type.

Microstep Resolution (SW1-SW4)
| Steps/Revolution | SW1 | SW2 | SW3 | SW4 |
| Software Configured (Default 400) | on | on | on | on |
| 800 | off | on | on | on |
| 1600 | on | off | on | on |
| 3200 | off | off | on | on |
| 6400 | on | on | off | on |
| 12800 | off | on | off | on |
| 25600 | on | off | off | on |
| 51200 | off | off | off | on |
| 1000 | on | on | on | off |
| 2000 | off | on | on | off |
| 4000 | on | off | on | off |
| 5000 | off | off | on | off |
| 8000 | on | on | off | off |
| 10000 | off | on | off | off |
| 20000 | on | off | off | off |
| 40000 | off | off | off | off |