The M880A is a high performance microstepping drive based on pure-sinusoidal current control technology. Owing to the above technology and the self-adjustment technology (self-adjust current control parameters) according to different motors, the driven motors can run with smaller noise, lower heating, smoother movement and have better performances at higher speed than most of the drives on the markets. It is suitable for driving 2-phase and 4-phase hybrid stepper motors.
- Extremely cost-effective
- Good high speed performance
- Supply voltage up to +80VDC
- Output current up to 7.8A
- Self-adjustment technology
- Pure-sinusoidal current control technology
- Pulse input frequency up to 300 KHz
- TTL compatible and optically isolated input
- Automatic idle-current reduction
- 16 selectable resolutions in decimal and binary, up to 51,200 steps/rev
- Suitable for 2-phase and 4-phase motors
- Support PUL/DIR and CW/CCW modes
- Short-voltage, over-voltage, over-current and over temperature protection
Electrical Specifications (Tj = 25oC/77oF)
|
Parameters |
M880A |
|||
|
Min |
Typical |
Max |
Unit |
|
|
Output current |
1.8 |
– |
7.8 (5.6 RMS) |
A |
|
Supply voltage |
+24 |
+68 |
+80 |
VDC |
|
Logic signal current |
7 |
10 |
16 |
mA |
|
Pulse input frequency |
0 |
– |
300 |
KHz |
|
Isolation resistance |
500 |
|
|
Mohm |
Connector P1 Configurations
|
Pin Function |
Details |
|
PUL+ |
Pulse signal: In single pulse (pulse/direction) mode, this input represents pulse signal, active at each rising or falling edge (set by inside jumper J3); 4-5V when PUL-HIGH, 0-0.5V when PUL-LOW. In double pulse mode (pulse/pulse) , this input represents clockwise (CW) pulse,active at high level or low level (set by inside jumper J3). For reliable response, pulse width should be longer than 1.5µs. Series connect resistors for current-limiting when +12V or +24V used. |
|
PUL- |
|
|
DIR+ |
DIR signal: In single-pulse mode, this signal has low/high voltage levels, representing two directions of motor rotation; in double-pulse mode (set by inside jumper J1), this signal is counter-clock (CCW) pulse,active at high level or low level (set by inside jumper J3). For reliable motion response, DIR signal should be ahead of PUL signal by 5µs at least. 4-5V when DIR-HIGH, 0-0.5V when DIR-LOW. Please note that motion direction is also related to motor-driver wiring match. Exchanging the connection of two wires for a coil to the driver will reverse motion direction. |
|
DIR- |
|
|
ENA+ |
Enable signal: This signal is used for enabling/disabling the driver. High level (NPN control signal, PNP and Differential control signals are on the contrary, namely Low level for enabling.) for enabling the driver and low level for disabling the driver. Usually left UNCONNECTED (ENABLED). |
|
ENA- |
Connector P2 Configurations
|
Pin Function |
Details |
|
VDC |
Power supply, 24~80 VDC, Including voltage fluctuation and EMF voltage. |
|
GND |
Power Ground. |
|
A+, A- |
Motor Phase A |
|
B+, B- |
Motor Phase B |
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 switch as shown in the following table:
|
Microstep |
Steps/rev.(for 1.8o motor) |
SW5 |
SW6 |
SW7 |
SW8 |
|
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 |
OFF |
OFF |
OFF |
ON |
|
256 |
51200 |
ON |
OFF |
OFF |
ON |
|
5 |
1000 |
ON |
ON |
ON |
OFF |
|
10 |
2000 |
OFF |
ON |
ON |
OFF |
|
20 |
4000 |
OFF |
OFF |
ON |
OFF |
|
25 |
5000 |
ON |
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
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 |
|
2.8 A |
2.0 A |
ON |
ON |
ON |
|
3.5 A |
2.5 A |
OFF |
ON |
ON |
|
4.2 A |
3.0 A |
ON |
OFF |
ON |
|
4.9 A |
3.5 A |
OFF |
OFF |
ON |
|
5.7 A |
4.1 A |
ON |
ON |
OFF |
|
6.4 A |
4.6 A |
OFF |
ON |
OFF |
|
7.0 A |
5.0 A |
ON |
OFF |
OFF |
|
7.8 A |
5.6 A |
OFF |
OFF |
OFF |
Note: Due to motor inductance, the actual current in the coil may be smaller than the dynamic current setting, particularly under high speed condition.
