Readhead Mounting/Installation - Renishaw RGH34 Installation Manual

Readhead mounting/installation

Mounting brackets
The RGH34 is designed to be integrated into OEM products, and as such the recommendations given here
for mounting brackets are intended only as a guide.
For readheads that incorporate reference mark or limit switch detection, the bracket should be designed
to allow clearance for the magnetic reference/limit sensor and actuator. A 'V' shaped groove in the
cylindrical body is provided as an aid to yaw alignment (see installation drawing).
RGH34 RGS40 installation guide
It is recommended that the cylindrical body of
the RGH34 be located by a stepped bore
(diameter 12.10 mm ±0.05 mm) and that it is
fixed in place by means of a clamping mechanism
(as shown), or affixed by a suitable adhesive.
Care should be taken to ensure that an even
pressure is applied to the cylindrical body to
prevent distortion of the optics.
An alternative arrangement is to mount the
readhead in a through-hole bracket, whilst using
a 1.5 mm shim to maintain ride height tolerance.
Again, the body can be secured by a clamping
mechanism or by a suitable adhesive.
FPC cable insertion
The FPC cable connectors on the RGH34 readhead and RGI34 interface are of the ZIF
(zero insertion force) type.
Prior to insertion, the clip (indicated) on the connector should be pulled forward to the open position.
The cable can then be inserted, connections uppermost, into the connector body.
The clip should then be pushed back to the closed position,
securing the cable in place.
Clip in open position
Clip in closed position
FPC cables
FPC (flexible printed circuit) cables
should be ordered separately from
your local Renishaw representative.
Cable connections
Part Part number
50 mm FPC A-9537-0182
100 mm FPC A-9537-0183
150 mm FPC A-9537-0184
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