Renishaw ATOM Installation Manual page 22

PCB mounting: connecting an FPC variant ATOM readhead
Pin 1
Pin 1
Customer PCB
FPC input connector
FPC cable
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.
22 ATOM rotary encoder system
ACi interface
2 mounting holes
M3 through
Input
Output
Shielding
For optimum performance:
• Ensure 100% shielding
• Ground the mounting brackets, readhead and FPC cable clamp
• Ensure continuity of all shields
• Maximise the distance between the encoder and motor cables
• Provide appropriate strain relief at the readhead and interface
• The ACi should be contained within a shielded enclosure
Connection
For information on inserting and removing the FPC cable to the mating socket, see pages
18 and 19.
Approved ESD precautions must be followed at all times during readhead
and interface electrical connection.
NOTE: The FPC cable must be connected to the readhead before fitting the lid. The lid is
secured by the readhead mounting screws.