EP Series User Manual
6
positive of the power supply and the V+ of the driver.
Please be careful not to reverse the connection, the damage to the driver
caused by the reverse connection of the power supply cannot be covered by
warranty. Please select the appropriate power supply
A. Voltage
When the chopper driver is working, the magnitude and the direction of the motor
winding terminal voltage are constantly changed, and the current is detected to obtain
the accurate phase current.
If you want to ensure high efficiency and low noise at the same time, the power
supply voltage of the driver should be at least 5 times the rated phase voltage of the
motor (that is, motor rated phase voltage = motor rated phase current * phase
resistance.).
If you need better high speed performance from the motor, you will need to
increase the driver supply voltage. If a regulated power supply is used, the power
supply voltage should not exceed 50V.
If using an unregulated power supply, the required voltage should not exceed 34V.
B. Current
The maximum supply current should be the sum of the two phase currents.
Typically, the current you need depends on the motor model, voltage, speed and load
conditions. The actual power supply current value is much lower than this maximum
current value, because the driver uses a switching amplifier to convert high voltage and
low current into low voltage and high current. The more the power supply voltage
exceeds the motor voltage, the less power supply current is required. When the motor is
connected to the 48V power supply, the output current of the power supply is half of the
output current of the 24V power supply.
2.3. Motor connection
If the motor you are using is our brand stepping motor, please connect the red,
blue, green and black wires to the A+, A-, B+, B- ports of the driver in sequence.
The default motor type driven by the driver is a two-phase stepping motor. If the
user needs to match a three-phase stepping motor, please modify the motor type
through the debugging software before connecting the three-phase stepping motor.
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