TONiC RESM20 Functional Safety installation guide and safety manual Original instructions
13
System connection – Ti interface
Approved ESD precautions must be followed at all times during readhead and interface electrical
connections.
The readhead is connected to the Ti interface via a small, rugged PCB connector to allow for easy
feed-through during installation.
Cable connection
X
The cable must be secured to a part that does not move relative to the readhead using a suitable clip
within 50 mm of exiting the readhead with a minimum bend radius >10 mm.
X
Cable rolling radius must be >25 mm when the cable is routed through moving trunking / a cable chain.
X
The cable must be routed to avoid all moving parts of the machinery and the readhead itself.
X
Route the cable away from operating environments that will exceed the EMC limits defined in
IEC 61800-5-2 Annex E.
X
Use only Renishaw approved cables between the readhead and the interface.
X
The customer is responsible for verifying the product function where the readhead to interface cable has
been re-terminated, including the installation of extension cables. This includes EMC performance of the
installed system defined in IEC 61800-5-2 Annex E.
X
The sine and cosine signals must be connected as described in
‘Electrical connections’ on page 21
Connecting the readhead
1
Remove the cover plate as shown (2 × M2.5 hex head screws).
2
Taking care not to touch the pins, plug the connector into the socket in the interface, ensuring correct
orientation as shown. Press-fit the PCB connector to ensure a good connection.
3
Refit the cover plate ensuring the cable ferrule is located in the recess on the inside and no wires
are trapped under the cover plate.
To ensure good electrical connection of the shield the tightening torque for cover screws is between
0.25 Nm and 0.4 Nm.
4
Mounting the interface to the receiving electronics is via 2 × 4-40 UNC screws. The tightening
torque is between 0.25 Nm and 0.4 Nm, or as required specific to the application and orientation
of mounting.