Woodward easYgen-2000 Series User Manual page 81

Topology
Maximum CAN bus length
37535B
Terminal
95
96
Table 38: CAN bus 2 (easYgen-2500 P1 only)
Please note that the CAN bus must be terminated with
a resistor, which corresponds to the impedance of the
cable (e.g. 120 Ohms, 1/4 W) at both ends.
The termination resistor is connected between CAN-H
and CAN-L (Fig. 68).
Fig. 68: CAN bus - termination
For very critical EMC conditions (many noise sources with high
noise levels) and for high transmission rates we recommend to use
the 'Split termination concept' as shown.
Divide the termination resistance into 2x60 Ohms with a center
n
tap connected to ground via a capacitor of 10 to 100 nF
(Fig. 68).
The maximum length of the communication bus wiring is
dependent on the configured baud rate. Observe the maximum bus
length.
(Source: CANopen; Holger Zeltwanger (Hrsg.); 2001 VDE
VERLAG GMBH, Berlin und Offenbach; ISBN 3-8007-2448-0).
Baud rate
1000 kbit/s
800 kbit/s
500 kbit/s
250 kbit/s
125 kbit/s
50 kbit/s
20 kbit/s
easYgen-2200/2500 | Genset Control
Description A
max
GND N/A
Shield N/A
Max. length
25 m
50 m
100 m
250 m
500 m
1000 m
2500 m
Installation
CAN Bus Interfaces
81