Sulzer CA 441 Guia De Instalacion página 7

1.4.2 CAN TERM
1.4.3 CAN connections
Book_81307110_CA44x.indb 7 Book_81307110_CA44x.indb 7
The CAN bus shall be terminated at both cable ends.
If used, PC 441 is bus master and has a built-in termination that is always active and should there-
fore always be placed at one of the endpoints of the cable.
For other devices you can activate the selectable termination with a switch, marked "CAN term".
Activate termination for the device placed on the other endpoint of the cable.
All other devices between should have their termination switch in "OFF" position.
CAN TERM CAN TERM
ON OFF
CA 511 CA 44x
Figure 2 CAN network with connection
CA 44x
Table 4. Top side connections
#
0V Voltage supply neg. terminal
1
← →
CAN_L low signal line
2
←
CAN_SHLD cable shield
3
← →
CAN_H high signal line
4
V+ Voltage supply pos. terminal
5
Bat t er y
char ger
AC
27. 2 V
DC
Figure 3 The power must be between 9 and 34 volts DC. For uninterrupted operation in case of power fail-
ure, connect a battery pack according to the figure.
CAN TERM CAN TERM
OFF OFF
CA 44x CA 44x
The CAN cable uses 5 wires. Two wires are used for commu-
nication CAN_L and CAN_H. One wired is shield CAN_SHLD
and two wires are used as bus power V+ and 0V. Bus power
allow devices to get power directly from the bus.
The connections is prepared to be done by screw plug in con-
nectors.
Usage
CA 44x
V +
Vol t age
Suppl y
Backup bat t er y pack
Fus e
+
7
Always
ON
PC 441
EN
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