Zapi EPS-AC0 SWs&ENC User Manual page 30

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The eps-ac0 drains low level of current and so low section cables (4 mm
adopted for the power connections. This could be a drawback: in fact, a low
section cable has higher reactance (impedance) than a wide section cable. As
a consequence the noise generated on the minus battery cable, by the CAN
lines switching, will be a wide amplitude spike. So, when it is possible, we
suggest to use a (as short as possible) cable of a wide section for the minus
battery connection, even for the eps-ac0 and the other low current units in the
system.
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VERY IMPORTANT: The eps-ac0 has the 120 ohms termination resistance
aboard.
In the following figures there is an overview of wrong and right layouts of the cables
routing.
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Wrong Layout:
The red lines are can wires.
The black boxes are different modules, for example traction controller, pump
controller and eps-ac0 connected by can bus.
The black lines are the power cables.
This is apparently a good layout, but can bring to errors in the can line.
The best solution depends on the type of nodes (modules) connected in the
network.
If the modules are very different in terms of power, then the preferable
connection is the daisy chain.
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Node 1
Traction
Control
Can Bus
Power cables
Node 3
eps-ac0
AEMZP0EA - EPS-AC0 SWs&ENC - User Manual
Node 2
Lift
Control
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2
) are