XPS-Q8 Controller User’s Manual
The XPS-DRV02 is a software configurable PWM amplifier for 3-phase brushless
motors. It has been optimized for performance with XM, ILS-LM, IMS-LM linear
motor stages and RGV direct drive rotation stages. The XPS-DRV02 supplies a 100
kHz PWM output with a maximum output current of 5 A per phase and 44 Vpp. The
XPS-DRV02 requires 1 Vpp analog encoder input signals used also for motor
commutation. Motor initialization is done by a special routine measures the magnetic
position without the need for Hall or other sensors.
The XPS-DRV03 is a fully digital, programmable PWM-amplifier that has been
optimized for use with high-performance DC motors. The high switching frequency of
100 kHz and appropriate filter technologies minimize noise to enable ultra-precision
positioning in the nm-range. The XPS-DRV03 supplies a maximum current of 5 Amps
and 48 Volts. It is capable of driving DC motors in velocity mode (for motors with
tachometer), in voltage mode (for motors without tachometer), and in current mode (for
torque motors). All parameters are programmable in physical units (for instance the
bandwidth of the velocity loop). Furthermore, the XPS-DRV03 features individual
limits for the rms current and the peak current.
The XPS-DRVP1 is a programmable driver card for Newport's NanoPositioning line of
piezoelectric stack stages. This driver card has a range of -10 to 150 VDC with 30 mA
continuous. The drive features a 4 kHz update rate and resolution of 16 bits ADC and
DAC. It also accepts strain gage position feedback.
The XPS-DRV00 and XPS-DRV00P pass-through module can be used to pass control
signals to other external third-party amplifiers (drivers). By setting the controller’s dual
DAC output to either analog position, analog stepper position, analog velocity, analog
voltage or analog acceleration (including sine commutation), the XPS is capable of
controlling almost any motion device including 3
rd
party brushless motors and voice
coils.
In addition to conventional digital AquadB feedback encoder interface, the XPS
controller also features a high-performance analog encoder input (1 Vpp Heidenhain
standard) on each axis. An ultra-high resolution, very low noise, encoder signal
interpolator converts the sine-wave input to an exact position value with a signal
subdivision up to 32,768-fold. For example, when used with a scale with 4 µm signal
period the resolution can be as fine as 0.122 nm. This interpolator can be used for
accurate position feedback on the servo corrector of the system. An additional hardware
interpolator with 40 MHz clock frequency and programmable signal subdivision up to
200-fold is used for synchronization purposes. This fast interpolator latches the position
directly with less than 50 ns latency and provides a much higher level of precision for
synchronization than alternative time based systems. Unlike most high-resolution
multiplication devices, the XPS interpolators do not compromise positioning speed.
With a maximum input frequency ranging from 180 kHz to 400 kHz (depending on the
interpolation factor), the maximum speed of a stage with a 20 µm signal period scale
can be up to 3.6 m/s.
2.3 Compatible Newport Positioners and Drive Power Consumption
The list of all compatible Newport positioners and the corresponding drive module
needed is available from the Newport catalog or at www.newport.com
XPSDocumentation V1.4.x (EDH0301En1060 — 10/17) 8
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