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5. External connections
5.6 CAN1 interface for protocols CANopen and J1939
5.6 CAN1 interface for protocols CANopen and J1939
5.6.0.1 Wiring
64
The CAN1- interface is not electrically isolated.
CAUTION
NON-GALVANICALLY-ISOLATED INTERFACES
The XV300 may be damaged by potential differences.
The GND terminals of all bus modules must be connected.
Do not connect the connector to the XV300 or disconnect it without
first de-energizing the system.
Table 18: PIN assignment for CAN interface as specified in CiA) CAN1, not galvanically isolated, SUB-D plug 9-
pole, UNC nuts for interlocking
SUB-D plug
9 pole
5
9
4
8
3
7
2
6
1
nc: PIN 1, 4, 5, 8 and 9 must not be connected.
l
PIN 3 (CAN-GND) and 6 (GND) are internally inter-
l
connected.
The power supply of the CAN bus drivers is implemented
l
internally.
A power supply for third party devices is not provided on
l
the CAN connector.
Screened twisted-pair cables must be used.
l
Table 19: Specifications for CAN wiring
Rated surge impedance
Permissible surge imped-
ance
Capacitance per unit
length
Core cross-section
XV300 04/19 MN048017EN www.eaton.eu
PIN
signal
1
n.c.
2
CAN-L
3
GND
4
n.c.
5
n.c.
6
GND
CAN-H
7
8
n.c.
n.c.
9
With a max. cable length of
Meaning
not used
Bus line (dominant low)
Ground
not used
not used
Optional Ground
Bus line (dominant high)
not used
not used
120 Ohm
108 ... 132 Ohm
< 60 pF/m
2
100 m
0.25 mm
2
250 m
0.34 mm
2
500 m
0.75 mm
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