Drive Options; Compatible Newport Positioners And Drive Power Consumption - Newport XPS-D Startup Manual

XPS-D Controller
2.2

Drive Options

The XPS controller is capable of driving up to 8 axes of most Newport positioners using
driver cards that slide through the back of the chassis. These factory-tested drives are
powered by an internal 750 W power supply, which is independent of the controller
power supply. When used with Newport ESP stages, the configuration of the driver
cards is easy using the auto-configuration utility software. Advanced users can also
manually develop their own configuration files optimized for specific applications.
The controller unit you get is limited to the number of axes you bought:
XPS-D2: 2-axis; XPS-D4: 4-axis; XPS-D6: 6-axis; XPS-D8: 8-axis.
Lower versions are upgradable up to 8-axis. Contact Newport for additional
information.
The XPS-DRV11 is a software configurable PWM amplifier that is compatible with
most of Newport's and other companies' DC brush and stepper motor positioners.
The XPS-DRV11 motor driver supplies a maximum current of 2 x 3 Arms and 47 V. It
has the capability to drive bipolar stepper motors in microstep mode (sine/cosine
commutation).
It has been optimized for performance with XM, ILS-LM, IMS-LM linear motor stages
and RGV direct drive rotation stages. It supplies a 78 kHz PWM output with a
maximum output current of 6Apeak per phase. It uses high resolution PWM technology
and loiser noise phase-current measurement to enable ultra-precision positioning in the
sub nm-range. The XPS-DRV11 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-DRV11 has been optimized for use with high-performance DC motors. It is
capable of driving DC motors in voltage mode and in current mode (for torque motors).
All parameters are programmable in physical units. Furthermore, the XPS-DRV11
features individual limits for the rms current and the peak current.
The 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
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 65536-fold. For example, when used with a scale with 4 µm signal
period the resolution can be as fine as 0.061 nm. This interpolator can be used for
accurate position feedback on the servo corrector of the system or for synchronization
purposes with an accuracy of 5 ns and a latency inferior to 700 ns from real stage
position to pulse generation. Unlike most high-resolution multiplication devices, the
XPS interpolators do not compromise positioning speed. With a maximum input
frequency of 2.4 MHz, the maximum speed of a stage with a 20 µm signal period scale
can be up to 48 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
NOTE
party brushless motors and voice coils.
rd
7
Start-Up Manual
www.newport.com
EDH0395En1031 – 09/18