QuantumDrive-4000 Manual 21
91-0027 Rev. E
Copyright © Nutfield Technology, Inc.
6/2010
8. Power
Requirements
Input Voltage:
±
15 to
±
24VDC
Ripple: < 100mV Ripple
Noise: < 0.5% DC to 30MHz
Maximum Drive Current Limit:
Peak: 10 Amperes per leg
RMS: 4.0 Amperes per leg (power supply, load, & heat sink dependent.)
Quiescent Current: 400mA per leg (Servo Enabled, Galvo Resting)
A power supply with sufficient output current should be used. The output current
required depends on the supply voltage, galvanometer model, mirror load, and
command waveform and duty cycle. Lower supply voltages, larger galvanometers,
larger mirrors, and more demanding waveforms and duty cycles will require more
current. It is a good practice to setup your application with a laboratory power supply
and measure the required current during the most demanding application your system
can run. Then select a power supply appropriate for your application.
Select a high quality power supply with good clean DC outputs. Power supplies with
excessive ripple or noise will cause scanning problems in your system.
The QD-4000 has two generous output capacitors, which supply instantaneous peak
current to the output drive amplifiers and lower the peak output requirements of your
system power supply.