phytron
25
MA 1303-A007 EN
5.1 Sizing of the Power Supply
The voltage of the supply unit (24 V
DC
or 48 V
DC
) depends on the motor speed during op-
eration. For low velocity (about < 300 rev/min) but high torque or if only low torque is nec-
essary at higher velocity (> 300 rev/min), a 24 V
DC
supply voltage is often sufficient. Refer
to the technical data of the stepper motor manufacturer for information about the required
performance with 24 V. These usually indicate torque characteristics dependent on the
supply voltage.
If higher numbers of revolutions must be achieved, we recommend supplying the TM
StepDrive module with 48 V
DC
.
Generally, the necessary power of the supply voltage is calculated by rules of thumb:
P
SUPPLY
= 2 x P
MECHANICAL
(for speed < 300 rev/min)
P
SUPPLY
= 3 x P
MECHANICAL
(for speed > 300 rev/min)
