Stepper Motor Driver, DM860A, 7.2A
If this product is purchased and no stock is available, our sales team will contact you with the option of a full refund or suggest similar alternatives which are in stock. If you would like to confirm stock before purchase, please contact our online sales team or email sales@gadgitechtr
DM860A is a two phase hybrid stepper motor driver, it designed to get the most out of your stepper motor. This driver can be used with motors requiring a current of up to 7.2A to run and features micro stepping up to 1/128th step. This driver is typically used with CNC machines, 3D printers, laser cutting machines and other automation machines.
Specifications
- 2 Phase stepper driver
- Input Voltage: 24 - 110VDC or 18 - 80VAC
- Input current: <6A
- Micro stepping: 16 options up to 128 micro stepping
- Optional 50% idle current reduction setting
- Output current: 8 channel current setting
- Opto-isolated inputs
- Manufacturer product code: DM860A
SW4 is used for this purpose. OFF meaning that the standstill current is set to be half of the selected dynamic current and ON meaning that standstill is set to be the same as the selected dynamic current.
- Output current setting:
The first three bits (SW 1, 2, 3) of the DIP switch are used to set the dynamic current. Select a setting
Closest to your motor’s required current
|
Output current (A) |
||||
|
SW1 |
SW2 |
SW3 |
Reference Current |
Peak Current |
|
OFF |
OFF |
OFF |
2.00 |
2.40 |
|
ON |
OFF |
OFF |
2.57 |
3.08 |
|
OFF |
ON |
OFF |
3.14 |
3.77 |
|
ON |
ON |
OFF |
3.71 |
4.45 |
|
OFF |
OFF |
ON |
4.28 |
5.14 |
|
ON |
OFF |
ON |
4.86 |
5.83 |
|
OFF |
ON |
ON |
5.43 |
6.52 |
|
ON |
ON |
ON |
6.00 |
7.20 |
- Power connections
(1)+V、GND：Power Supply.
+V: Power supply, 24~110 VDC or 18~80 VAC, Including voltage fluctuation and EMF voltage.
(2) A+ A- B+ B-：Connecting 2 phase stepper motors.
The driver & 2-phase hybrid stepping motor use four-wire connection, the motor can be connected in parallel & series bipolar. As for bipolar connection, it is higher performance with high-speed, but the current of driver is larger (it is 1.73 times more than the motor’s winding current).
Connecting in series, the driver’s current is equal to the motor winding one.
- Mounting
There should be 20mm of space all sides of the driver, it can’t be placed next to other heating devices and avoid dust, oil, mist, corrosive gas, humidity and strong vibration areas.
Physical Dimensions:
- Adjustment of troubleshooting
1) The status on light’s indication
PWR: green, normal work light.
ALM: red, failure light, the motor with phase short-circuit, overvoltage and under-voltage protection.
2) Trouble shooting
|
Alarm indicator |
Reasons |
Measures |
|
LED off turn |
Wrong connection for power |
Check wiring of power |
|
Low-voltages for power |
Enlarge voltage of power |
|
|
Motor doesn’t run, without holding torque |
Wrong connection of stepper motor |
Correct its wiring |
|
RESET signal is effective when offline |
Make RESET ineffective |
|
|
Motor doesn’t run, but maintains holding torque |
Without input pulse signal |
Adjust PMW & signal level |
|
Motor runs wrong direction |
Wrong wires’ connection |
Change connection for any of 2 wires |
|
Wrong input direction signal |
Change direction setting |
|
|
Motor’s holding torque is too small |
Too small relative to current setting |
Correct rated current setting |
|
Acceleration is too fast |
Reduce the acceleration |
|
|
Motor stalls |
Rule out mechanical failure |
|
|
Driver does not match with the motor |
Change a suitable driver
|
If this product is purchased and no stock is available, our sales team will contact you with the option of a full refund or suggest similar alternatives which are in stock. If you would like to confirm stock before purchase, please contact our online sales team or email sales@gadgitechtrading.co.za
