Installation
11
Conduit for cable protection
Renishaw recommends that Thomas and Betts
Type EF conduit, or a suitable alternative, is fitted
to all installations. The TS27R conduit adaptor
accepts Ø11 mm (0.43 in) flexible conduit.
NOTE: The cable screen is connected to the
machine via a 100 nF capacitor inside the
TS27R to prevent possible earth loops. Ensure
the cable screen is connected to the appropriate
input on the interface. The interface units are
fully described in the following publications:
MI 8-4 interface unit installation and user’s guide
(Renishaw part no. H-2000-5008), HSI hard-wired
system interface installation guide (Renishaw
part no. H-5500‑8554) and HSI-C hard-wired
system interface – configurable installation guide
(Renishaw part no. H-6527‑8501).
The interface also includes an ‘inhibit’ function, as
well as a facility for simple selection between the
tool setting probe and an inspection probe.
The HSI and HSI-C interfaces are used with the
standard G31 SKIP input. Probe status output is
a voltage-free SSR (solid-state relay) which can
be connected as normally open (NO) or normally
closed (NC).
Maximum current 50 mA peak
Maximum voltage ±50 V peak
An inhibit function is included, and a facility to
drive an external probe status LED.
Interfaces
The MI 8-4 interface is used with the standard
G31 SKIP input. The probe’s status output
operates between 4.75 Vdc and 30 Vdc.
All inputs are fully configurable for ACTIVE HIGH
and ACTIVE LOW operation.
