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6
Operation overview
The HS20 laser head can be incorporated into the position control loop of any motion-control system
that can be configured to accept digital or analogue quadrature format encoder signals. The laser
head can be fitted as a direct replacement for linear encoder systems both in OEM and retrofit
applications.
HS20 laser scale kit
The following is a list of the major components, and their basic function:
HS20 laser head
Part No: A-8003-6000
The HS20 laser head is a class II (maximum
output power < 1mW) visible helium/neon
laser source with integrated fringe detection
and processing circuitry. The HS20 can be
configured for digital output resolutions of
79, 158, 316, 633 nm or analogue 1Vpp sin/cos
signals of 316 nm. The HS20 laser head is
powered from 24V DC. One HS20 laser head
is required per axis. The HS20 may be used
with either standard (up to 30 m) or long range
optics (up to 60 m).
Linear measurement optics
There are two types of linear optics are available: standard (up to 30 m) and long range (up to 60 m)
See figure 1 and 2 (page 10) for typical setup examples.
Standard optics for applications with an axis length of up to 30 m.
Part No: A-8003-0440
The kit includes:
• two retroreflectors & clamp screws
• one beamsplitter
• two targets
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