Technical Manual &
Cabling Instructions
Page 61 / MAN000596
Mechanics and
Cabling
Epec Oy reserves all rights for improvements without prior notice
Epec Oy
Tiedekatu 6
FIN-60320 Seinäjoki
Postal address
PL/P.O.Box 194
FIN-60101 Seinäjoki,
Finland
Phone
+358-(0)20-7608 111
Fax
+358-(0)20-7608 110
Internet
www.epec.fi
15.4 Cabling
15.4.1 System Topologies
Generally, cabling should be properly designed and documented to help the initial
assembly and maintenance.
It is highly recommended to mark each cable on both ends to avoid confusion and
errors.
The cables must be run in a safe route along the machine frame.
When routing cables, avoid interfering objects and pay particular attention to
moving parts of the machine.
It is also good to minimize the amount of the connection points of the cable
harness to maximize reliability.
Also, all valid safety instructions should be observed when coupling.
• The control units are connected with each other using standardized CAN bus.
• The idea of the Epec embedded control system, is that all the control units are installed
close to sensors, encoders and other equipment connected to them.
• This way the amount of the traffic on the CAN bus is minimized and
connections can be made using short wires.
Termination resistors
• Generally, the bus cable is terminated at both ends with termination resistors (ISO
11898:1993).
• External termination resistor (120 Ω) has to be connected at both ends between CAN H
and CAN L.
•
The cable lengths presented here are approximates. Actual cable lengths also
depend on the cable quality, the cable type and also on the machine environment
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