Can Port Signals ⎯ Internal Connections; Can Bus; Can Bus Addressing; Hardware Assignment ⎯ Controllers - Eltek Smartpack User Manual

2 The Smartpack Controller
CAN Port Signals ⎯ Internal Connections
Smartpack
controller
2x8 pins RJ45 Connectors
CAN port 2
RJ45, 8 pins
8 1
1 8
CAN port 1
RJ45, 8 pins
CAN Bus Connections
Figur 7 CAN port signals

CAN bus

The Smartpack-based DC power systems utilize the CAN
architecture that supports a dedicated communication channel between the controllers
and each of the rectifiers.

CAN bus Addressing

Eltek's CAN bus may address a maximum of 60 nodes. Among them, you may connect a
maximum of 8 Smartpack controllers and or 50 rectifiers.
The Smartpack controller is factory configured with a
unique CAN bus ID number, using DIP switches on the
side of controller (hardware-assignment). See Figure
3, page 7.
In a distributed DC power system with several
Smartpack controllers, the master is configured with
ID # <1>, the slave with ID # <2> and so on. Refer
to the table in this chapter and Figure 9, page 11.
When a new Smartpack controller is inserted in an existing system, the controller will
recalculate the number of connected rectifiers, reassigning them with the same ID
numbers as they already have in memory. Read "Software Assignment", page 11.
1
Control Area Network. Serial protocol utilised for communication between Eltek's
rectifiers and controllers
10
CAN port 1 and 2 are electrically identical, and
CAN1 & 2
are used to enable connection of the CAN bus
incoming and outgoing CAT5 cables.
SIGNAL PIN-OUT
+12V 1
CS
−12V
2
A special RJ45 plug with built-in 120Ω end-of-
CS
+5V 3
CAN1
line resistor can be connected to one of the
CANH 4
CANL 5 CAN ports; refer to Figure 8, page 11.
GND 6
CAN1
+12V 7
CS
CAN ports' pin 1&2 may supply the slave
GND 8
BC/CS
controller with 12VDC, 16W via the CAN bus.
Hardware Assignment ⎯ Controllers
User's Guide Smartpack Monitoring & Ctrl Unit,
1
bus ⎯ a digital interface
Controller ID DIP Switch Position
# 1 ⎯
Master 1 OFF⎯OFF⎯OFF⎯OFF
Slave 1 2 ON⎯OFF⎯OFF⎯OFF
Slave 2 3 OFF⎯ ON⎯OFF⎯OFF
Slave 3 4 ON⎯ ON⎯OFF⎯OFF
Note that the controller's ID # corresponds to
the DIP switch's binary value plus one.
350003.013, v5-2006-11
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