Renishaw APCA 45, Installation And User Manual

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3 Interface unit
HSI interface unit
HSI-C interface unit
Introduction
An HSI or HSI-C interface unit is required to
convert the signals from the APC unit into
voltage-free solid-state relay (SSR) outputs for
transmission to the CNC machine controller, which
responds to the probe inputs.
WARNING:
Before installing the interface unit,
ensure that the machine is safe to work on. Switch
off machine power when working in the control
cabinet.
In addition to the features of the HSI, the HSI-C
enables the user to select a suitable level of
immunity to false triggering (caused by machine
vibrations or accelerations) for the connected
APC unit. The HSI-C can also respond to a
configuration override input that switches the
probe to the highest level of immunity to false
triggering when manoeuvring to a measure
position at high speed.