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4. Power Supply
4.1 Voltage
The chopper driver continuously changes the size and direction of the motor winding voltage
and detects the current to obtain accurate phase current. If both high efficiency and low noise
are to be ensured, the driver supply voltage shall be at least 5 times the motor rated phase
voltage (that is, the motor rated phase current × phase resistance).
If you need the motor to get better high speed performance, you need to increase the driver
supply voltage.
If power is supplied from a regulated power supply, the supply voltage shall not exceed 72V.
If non-stabilized power supply is used, the voltage shall not exceed 53V.
Because the rated current of non-stabilized power supply is full load current; When the load is
light, such as when the motor is not running, the actual voltage is up to 1.4 times the rated
voltage of the power supply. For smooth and quiet operation of the motor, choose low voltage.
4.2 Current
The maximum supply current shall be the sum of the two phase currents. Usually, the amount
of current you need depends on the type of motor, voltage, speed, and load conditions. The
actual supply current value is much lower than this maximum value, because the driver USES
a switching amplifier that converts high voltage and low voltage current into low voltage and
high current. The more the supply voltage exceeds the motor voltage, the less supply current
is required. When the motor is connected to a 48V power supply, the output current of the
power supply is half of that of the 24V power supply.
4.3 Regeneration of Discharge
When the motor slows down, it ACTS like a generator, converting the kinetic energy of the load
into electricity. Some energy is consumed by the driver and motor. If your application has a
large load running at high speed, a considerable amount of kinetic energy can be converted
into electricity. Easy to cause the drive alarm (overvoltage) may even cause damage to the
drive.
Since this driver has the function of anti-power connection, it can prevent the driver
damage caused by power connection, so the use of external regenerative discharge
device does not work.
Power Supply
