Description
DM542A is a two-phase hybrid stepping motor driver, The drive voltage of which is from 18VDC to 50VDC. It is designed for use with 2-phase hybrid stepper motor of all kinds with 42mm to 86mm outside diameter and less than 4.0A phase current. This circuit that it adopts is similar to the circuit of servo control which enables the motor run smoothly without noise and vibration. Holding torque when DM542A run under high speed is also significantly higher than the other two-phase driver, what’s more, the positioning accuracy is also higher. It is widely used in middle and big size numerical control devices such as curving machine, CNC machine, computer embroider machine, packing machines and so on.
Key Features:
- High performance
- Average current control, 2-phase sinusoidal output current drive
- Supply voltage from 18VDC to 50VDC
- Maximum drive current 4.2 A
- Standby current can be set to half
- Opto-isolated signal I/O
- Overvoltage, under voltage, overcurrent, phase short circuit protection
- 15 channels microstep subdivision from 400 to 25000 and automatic idle-current reduction
- 8 channels output phase current setting
- Motor torque is related with speed, but not related with step/revolution
- High start speed
- High holding torque under high speed
- Pulse input frequency up to 200 kHz, TTL compatible and optically isolated input
Signal interface details:
Controller’s control signals can be active in high or low electrical level. When the high electrical level is active (common cathode connection), all control negative signals will be connected together to GND. When the low electrical level is active (common anode connection), all control positive signals will be connected together to public port. See pictures below for details:
- Common cathode connection
- Common anode connection
You can use 5 – 24 V signal of a controller, just make sure that the appropriate resistor is used:
| Signal amplitude | External current limiting resistor R |
|---|---|
| 5V | Without R |
| 12V | 1kΩ |
| 24V | 2kΩ |
Motor and power supply interface details:
| Motor pins | A+ | 4 wires of a motor must be connected. In most situations those wires are color coded. Color associated with a winding depends on the motor. Please refer to the motor’s documentation for details. |
| A- | ||
| B+ | ||
| B- | ||
| Power supply pins | DC+ | Power supply: 18-50 VDC |
| DC- |
