Renishaw ATOM Installation Manual page 13

System connection:
ACi interface
PCB mounting: connecting an FPC variant ATOM readhead
Pin 1
Pin 1
Customer PCB
FPC input
connector Input
FPC cable
Ensure that the FPC cable being used has the following specifications:
16 core
u
Conductor pitch 0.5 mm
u
Minimum exposed conductor strip length 1.5 mm
u
u Maximum exposed conductor strip length 2.5 mm (to ensure isolation from the body)
Contact your local Renishaw representative for more information of the FPC design requirements.
Shielding
For optimum performance:
u Ensure 100% shielding
Ground the mounting brackets, readhead and FPC cable clamp
u
Ensure continuity of all shields
u
Maximise the distance between the encoder and motor cables
u
Provide appropriate strain relief at the readhead and interface
u
Connection
For information on inserting and removing the FPC cable to the mating socket see page 9.
Approved ESD precautions must be followed at
all times during readhead electrical connection.
The FPC cable must be connected to the readhead before fitting the lid.
The lid is secured by the readhead mounting screws.
ATOM
rotary installation guide
PCB mounting: connecting a cable variant ATOM readhead
ACi interface
2 mounting holes
M3 through
Output
Shielding
For optimum performance:
Ensure 100% shielding
u
Ground the mounting brackets
u
Use a metal clamp around the cable ferrule to ground the readhead cable
u
Ensure continuity of all shields
u
Maximise the distance between the encoder and motor cables
u
Provide appropriate strain relief at the readhead and interface
u
u The ACi should be contained within a shielded enclosure
Ensure suitable clamping to retain interboard connector to the mating connector
u
Customer PCB
Ferrule
Cable interboard
*
connector
Approved ESD precautions must be followed at
all times during readhead electrical connection.
ACi interface
2 mounting holes
M3 through
Input
Output
11