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Features
- High performance, low cost
- Supply voltage up to +24VDC, peak current up to 2.5A
- 3-state current control technology
- Automatic idle-current reduction
- Suitable for 2-phase and 4-phase stepping motors
- Optically isolated input signals
- Pulse frequency up to 100 KHz
- 4 Selectable resolutions
- DIP switch current setting with 7 different values
- PUL/DIR & CW/CCW mode optional
- Small size (86x55x20.5mm)
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Introduction:
M325 is a high performance microstepping driver based on one of the most advanced technologies in the world today. It is suitable for driving any 2-phase and 4-phase hybrid stepping motors. By using advanced bipolar constant-current chopping technique, it can output more speed and power from the same motor, compared with traditional technologies such as L/R drivers. Its 3-state current control technology allows coil currents to be well controlled, with relatively small current ripple and therefore less motor heating. |
Applications:
Suitable for a wide range of stepping motors of Nema 17 and 23, and usable for various kinds of machines, such as X-Y tables, labeling machines, laser cutters, engraving machines, and pick-place devices. Extremely suitible for applications excepted to be low vibration, high speed and high precision. |
| Electric Specifications (Tj=25o) |
| Parameters |
M325 |
| Min. |
Typical |
Max. |
Unit |
| Output current |
0.39 |
- |
2.5 |
Amps |
| Supply voltage (DC) |
12 |
24 |
24 |
VDC |
| Logic signal current |
7 |
10 |
16 |
mA |
| Pulse input frequency |
0 |
- |
100 |
Khz |
| Isolation resistance |
500 |
- |
- |
MΩ |
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| Mechanical Specifications (Unit: mm, 1 inch=25.4 mm) |
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| Pin Assignment and Description |
| Control Signal Connector P1 pins |
| Pin Function |
Details |
| PUL |
Pulse signal: in single pulse (PUL/DIR) mode, this input represents pulse signal, effective for each upward-rising edge; in double pulse mode (CW/CCW) this input represents clockwise (CW) pulse. For reliable response, pulse width should be longer than 3μs. |
| DIR |
DIR signal: in PUL/DIR mode, this signal has low/high voltage levels, representing two directions of motor rotation; in CW/CCW mode (set by inside jumper J2), this signal is counter-clock (CCW) pulse, effective on each rising edge. For reliable response, direction signal should be sent to driver 5μs before the first pulse of a motion direction reversal. |
| OPTO |
Photo-coupler driving power supply. |
| ENA |
Enable signal: this signal is used for enabling/disabling the driver. High level for enabling the driver and low level for disabling the driver. Usually left unconnected (enabled). |
|
| Power connector P2 pins |
| Pin Funtion |
Details |
| Gnd |
DC power ground |
| +V |
DC power supply, +12VDC － +24VDC, Including voltage fluctuation and EMF voltage. |
| Phase A |
Motor coil A (leads A+ and A-) |
| Phase B |
Motor coil B (leads B+ and B-) |
|
| Microstep Resolution Selection |
| Microstep resolution is specified by 5, 6, DIP switches as shown in the following table: |
| Microstep |
usteps/rev.( 1.8°/rev) |
SW5 |
SW6 |
| 1 |
200 |
ON |
ON |
| 2 |
400 |
OFF |
ON |
| 4 |
800 |
ON |
OFF |
| 8 |
1600 |
OFF |
OFF |
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| Current Setting |
| Peak Current (A) |
SW1 |
SW2 |
SW3 |
| 0.39 |
OFF |
ON |
ON |
| 0.71 |
ON |
OFF |
ON |
| 1.10 |
OFF |
OFF |
ON |
| 1.42 |
ON |
ON |
OFF |
| 1.81 |
OFF |
ON |
OFF |
| 2.13 |
ON |
OFF |
OFF |
| 2.52 |
OFF |
OFF |
OFF |
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| Typical Connections |
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