Renishaw APCA-45, Installation And User Manual

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2
APCA-45 system (continued)
An HSI or HSI-C interface is required to
convert the signals from the APCA-45 unit into
voltage-free solid-state relay (SSR) outputs for
transmission to the CNC machine controller, which
responds to the probe inputs.
The APCA-45 features an “air bleed” function.
“Air bleed” is where air flows at a constant rate
over the stylus cube when the APCA-45 cover is
extended or retracted to help prevent build up of
contamination on the stylus cube.
NOTE: A retract confirm sensor provides the
machine controller with a signal to indicate that
the APCA-45 cover is retracted.