MICROSPEED
12
REV 04/05
The factory suggests keeping a margin by choosing AC
voltage to avoid too high voltage during the deceleration
phases of the motor;this value is 60 VDC (44 VAC)
Max value is 80Vdc and minimum value is 22 Vdc.
The power rating of the transformer is calculated in
accordance with the total power (SUM) of all single
motors used:
P(VA)=Power absorbed servomotor 1+power abs.
servomotor 2+....etc)
Notice:If multiaxis application is required,the
transformer power rating may be reduced by 30 %
respecting the original equation.
REF. the filter capacitor - the factory reccomends one
with a working voltage of at least 100 Vdc.
The appropriate value may be find with the follow
equation:
C (mF) = P (VA) trasfo. x 2000
V2
V2 = DC voltage on the terminals capacitor without
load.
The capacitor serves to filter the voltage from the bridge
and recover the energy during the motors deceleration
phases.
Power supply rating (continued)
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