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System connection
Readhead only
(no interface)
The ATOM readhead is available in several variants:
Cable variant with a 15-way D-type connector
Cable variant with interboard connector
FPC variant
None of these readhead variants has an integral calibration (CAL) button. Provision should be made
in the customers' electronics for momentarily connecting the CAL line to 0 V to initiate the calibration
routine, switch AGC on /off or restore factory defaults. See
Calibration is an essential part of system set-up that optimises the incremental signals and phases the
reference mark. See
page 28
for information on the calibration routine.
For cable variant with interboard connector
Ensure that the interboard connector is inserted into the connector on the customers' electronics.
NOTE: Care should be taken to ensure correct orientation
Use a metal clamp around the cable ferrule to ground the readhead cable and ensure continuity of
the shields
Provide appropriate strain relief
Ensure suitable clamping to retain interboard connector to the mating connector
JST 12-way, single row
12SUR-32S.
JST mating connector:
P-CN10-0051
(SM12B-SURS-TF)
ATOM linear installation guide
page 36
for pin-out information.
1
13
2
14
Hirose Interboard connector
14-way, dual row
DF23C-14DP- 0.5 V
Hirose mating connector:
P-CN03-0024
(DF23-14DS-0.5 V)
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
Shield
connect pad
Example of strain relief
Interboard
connector
4 mm
PCB
FPC connector
FPC cable
Readhead LED
0-0.5 mm
3.25 mm
17
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