IDX 7505 Manual (V1.17 / 2011-APR-11)
21
Copyright © 2011, TRINAMIC Motion Control GmbH & Co. KG
Check your motor data sheet, please. If in doubt, please start with a lower supply voltage and check
motor heating when raising the voltage.
6.2
Connecting motor and power supply
Power supply
IDX
C
keep distance
short
Figure 6.2: Connecting motor and power supply
6.3
Power supply requirements
The power supply voltage shall be in the limits as given in the chapter 0 under operational ratings.
Please note that there is no protection against reverse polarity or too high voltage. The power supply
typically should be within a range which fits the motor requirements, as described in chapter 6.1.1.
When using supply voltages near the upper limit, a regulated power supply becomes a must. Please
ensure, that enough power filtering capacitors are provided in the system (1000µF for each ampere
of RMS motor current or more recommended), in order to absorb mechanical energy fed back by the
motor in stalling conditions. In larger systems a zener diode circuitry might be required, when motors
are operated at high velocities.
The power supply should be designed in a way, that it supplies the nominal motor voltage at the
desired maximum motor power. In no case shall the supply value exceed the upper or lower voltage
limit. To ensure reliable operation of the unit, the power supply has to have a sufficient output
capacitor and the supply cables should have a low resistance, so that the chopper operation does not
lead to an increased power supply ripple directly at the unit. Power supply ripple due to the chopper
operation should be kept at a maximum of a few 100mV.
Therefore we recommend to
a)
keep power supply cables as short as possible
b)
use large diameter for power supply cables
