- Anti-Resonance for optimal torque, smooth motion, low motor heating and noise
- Motor auto-identification and parameter auto-configuration for optimal torque from wide-range motors
- Step & direction (PUL/DIR) and CW/CCW (via internal jumper set) control. Step & direction by default Multi-Stepping for smooth motor movement
- Opto Isolation for input control signals
- Input voltage 18-80VAC or 24-110VDC
- 16 selectable micro-step resolutions of 400-51,200 via DIP switches
- 8 selectable output current settings of 2.4 – 7.2A via DIP switches
- Soft-start with no “jump” when powered on
- Pulse input frequency up to 200 KHz. TTL compatible and optically isolated inputs
- Automatic idle-current reduction
- Protections for over-voltage and over-current
Electrical Specifications (Tj = 25oC/77oF)
|
Parameters |
DMA860E |
|||
|
Min |
Typical |
Max |
Unit |
|
|
Output current |
2.4 |
– |
7.2 |
A |
|
Supply voltage |
18 24 |
36 – 70 50 – 90 |
80 110 |
VAC VDC |
|
Logic signal current |
7 |
10 |
16 |
mA |
|
Pulse input frequency |
0 |
– |
200 |
kHz |
|
Minimal Pulse Width |
2.5 |
– |
– |
μS |
|
Minimal Direction Setup |
5.0 |
– |
– |
μS |
|
Isolation resistance |
500 |
– |
|
Mohm |
Connector P1 Configurations
|
Pin Function |
Details |
|
PUL |
Pulse signal: Pulse active at rising edge; 4-5V when PUL-HIGH, 0-0.5V when PUL-LOW. Minimal pulse width of 2.5μs. Add a resistor for current-limiting at +12V or +24V input logic voltage (1K for +12V, 2k for +24V). The same as DIR and ENA signals. |
|
DIR |
DIR signal: This signal has low/high voltage levels to represent two directions of motor rotation. 4-5V when DIR-HIGH, 0-0.5V when DIR-LOW. Minimal direction setup time of 5μs. Swapping the connection of two wires of a coil (e.g. A+ and A-) to the drive will reverse motor direction. |
|
ENA |
Enable signal: This signal is used for enabling/disabling the drive. High level +5V (NPN control signal) for enabling the drive and low level for disabling the drive. PNP and Differential control signals are on the contrary, namely Low level for enabling. By default it is left UNCONNECTED (ENABLED).. |
Connector P2 Configurations
|
Pin Function |
Details |
|
A+, A- |
Motor Phase A connections. Connect motor A+ wire to A+ Pin; motor A- wire to A |
|
B+, B- |
Motor Phase B connections. Connect motor B+ wire to B+ Pin; motor B- wire to B |
|
AC |
Power supply input 18~80VAC or 24-110 VDC; No polarity |
|
AC |
This drive uses an 8-bit DIP switch to set microstep resolution, and motor operating current, as shown below:
Microstep Resolution Selection
Microstep resolution is set by SW5, 6, 7, 8 of the DIP switches as shown in the following table:
|
Microstep
|
Steps/rev.(for 1.8o motor) |
SW5 |
SW6 |
SW5 |
SW6 |
|
2 |
400 |
ON |
ON |
ON |
ON |
|
4 |
800 |
OFF |
ON |
ON |
ON |
|
8 |
1600 |
ON |
OFF |
ON |
ON |
|
16 |
3200 |
OFF |
OFF |
ON |
ON |
|
32 |
6400 |
ON |
ON |
OFF |
ON |
|
64 |
12800 |
OFF |
ON |
OFF |
ON |
|
128 |
25600 |
ON |
OFF |
OFF |
ON |
|
256 |
51200 |
OFF |
OFF |
OFF |
OFF |
|
5 |
1000 |
ON |
ON |
ON |
OFF |
|
10 |
2000 |
OFF |
ON |
ON |
OFF |
|
20 |
4000 |
ON |
OFF |
ON |
OFF |
|
25 |
5000 |
OFF |
OFF |
ON |
OFF |
|
40 |
8000 |
ON |
ON |
OFF |
OFF |
|
50 |
10000 |
OFF |
ON |
OFF |
OFF |
|
100 |
20000 |
ON |
OFF |
OFF |
OFF |
|
200 |
40000 |
OFF |
OFF |
OFF |
OFF |
Current Settings
For a given motor, higher drive current will make the motor to output more torque, but at the same time causes more heating in the motor and drive. Therefore, output current is generally set to be such that the motor will not overheat for long time operation. Since parallel and serial connections of motor coils will significantly change resulting inductance and resistance, it is therefore important to set drive output current depending on motor phase current, motor leads and connection methods. Phase current rating supplied by motor manufacturer is important in selecting drive current, however the selection also depends on leads and connections. The first three bits (SW1, 2, 3) of the DIP switch are used to set the dynamic current. Select a setting closest to your motor’s required current.
|
Peak Current |
RMS Current |
SW1 |
SW2 |
SW3 |
|
2.40A |
1.70A |
ON |
ON |
ON |
|
3.08A |
2.18A |
OFF |
ON |
ON |
|
3.77A |
2.67A |
ON |
OFF |
ON |
|
4.45A |
3.15A |
OFF |
OFF |
ON |
|
5.14A |
3.64A |
ON |
ON |
OFF |
|
5.83A |
4.12A |
OFF |
ON |
OFF |
|
6.52A |
4.61A |
ON |
OFF |
OFF |
|
7.20A |
5.09A |
OFF |
OFF |
OFF |
Notes: Due to motor inductance, the actual current in the coil may be smaller than the dynamic current setting, particularly under high speed condition.
The DMA860E stepper drive are designed to power 2 phase (1.8°) or 4-phase (0.9°) NEMA 23, 24, 34, and 42 hybrid stepper motors. It can be easily adopted in many industries (CNC, medical, automation, packaging…), such as X-Y tables, engraving machines, labeling machines, mills, plasma, laser cutters, pick and place devices, and so on. Its excellent performance, simple design, and easy setup make it ideal for many step & direction control type applications.
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