Renishaw ATOM Installation Manual page 26

For FPC variants
Ensure that the FPC cable being used has the following specifications:
• 16 core
• Conductor pitch 0.5 mm
• Minimum exposed conductor strip length 1.5 mm
• Maximum exposed conductor strip length 2.5 mm (to ensure isolation from the body)
Contact your local Renishaw representative for more information regarding FPC design requirements.
Shielding
For optimum performance:
• Ensure 100% shielding
• Ground the mounting brackets
• Ensure continuity of all shields
• Maximise the distance between the encoder and motor cables
• Provide appropriate strain relief at the readhead
26 ATOM linear encoder system
Example of strain relief
4 mm
Shield
connect pad
Readhead LED
0-0.5 mm
3.25 mm
FPC connector
PCB
FPC cable