Electrical Connections - Renishaw ATOM Series Installation Manual

Linear encoder systems
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Electrical connections

Grounding and shielding
FPC readhead
FPC cable
Shield
(recommended)
For more information on FPC contact your local Renishaw representative.
Cable readhead
Connector / interface
Shield
IMPORTANT: The shield should be connected to the machine earth (Field Ground).
NOTE: Maximum cable length between interface and customer electronics is 25 m for ACi and Ri and 50 m for Ti.
(Maximum length for Ti with 40 or 50 MHz clocked output is 25 m).
ATOM linear installation guide
ACi / customer
electronics
5 V
Output
signals
0 V
Customer
electronics
5 V
Output
signals
0 V
Recommended signal termination
Digital outputs
0 V
Interface
A B Z E+
Cable Z
= 120R
0
A B Z E−
Standard RS422A line receiver circuitry.
Capacitors recommended for improved noise immunity.
Analogue outputs
V
V
V
+
0
1
2
120R
V
V
V
0
1
2
Remote CAL operation
CAL
Remote CAL operation is possible via the CAL pin.
For applications where no interface is used, remote CAL operation is essential.
0 V
Customer
220 pF
electronics
120R
220 pF
0 V
45

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