Table of Contents
Advertisement
Appendix
CAN Bus Termination
USB A-B cable
(standard)
1
End-of-Line
Resistor
120
Flatpack2
DC Power System
All rectifiers and control units (controllers and CAN nodes) connected to the Eltek Valere's CAN bus must
have a unique address or ID number. The power system's master controller assigns automatically the
rectifiers' addresses (software assignment). The master controller registers the rectifiers' ID numbers – or
CAN bus address (01, 02 ...) – together with their Serial Numbers.
The power system's control units make use of DIP switches for configuring their unique CAN bus ID
number (hardware assignment). The only exception is the Compack and Smartpack2 Master controllers,
which have factory assigned specific ID numbers <1>and <11> (not changeable).
In the control system's CAN bus, you can address a maximum of 14 CAN nodes of each type, 8 Smartpack
and Smartpack2 Basic controllers and 8 Smartnode units. See table below:
Number of nodes >>
Control Units' Name
Smartpack & Smartpack2 Basic Controllers
Smartnode Control Units 17 18 19
Battery Monitor CAN nodes 33 34 35
Load Monitor CAN nodes 49 50 51
I/O Monitor & I/O Monitor2 CAN nodes 81 82 83
Mains Monitor CAN nodes 97 98 99 100 101 102 103 104 105 106 107 108 109 110
**
Only 4 of the 8 mounted DIP switches may be used (max. 14 Load Monitors may be connected).
For DIP switch configuration, refer to actual control unit's guide or to WebPower Help.
The figure shows a Flatpack2 DC power system with Smartpack2-based control system and 4 CAN nodes
to implement additional digital inputs, relay outputs or similar functionality.
WebPower
(web-based user interface)
Smartpack2
Master Controller
CAN bus
(twisted-pair
CAT5 cable)
ID Number
81
Alarm Outputs NC-C-NO
Config. Inputs
Flatpack2
DC Power System
12
CAN bus
(twisted-pair internal
CAT5 cable)
120
End-of-Line
Resistor
01
02
n
1
2
1
2
**
65 66 67
ID numbers formatted in grey italics are not available due to software constraints.
Ethernet cable (LAN)
Smartpack2
Basic Controller
1
01
Internal System Monitoring
I/O Monitor2
I/O Monitor
82
Temp, Fan Speed Mon & Ctrl
Alarm Outputs NC-C-NO
Config. Inputs
Quick Start Guide Flatpack2 PS System, 4U, SP2-based
Flatpack2 systems are shipped from factory with the
CAN bus already terminated with 120 resistors.
To ensure a correct bus communication and avoid data
reflection, you must always terminate the CAN bus with
two 120 resistors, one at each end of the line (60 bus
impedance). The figure shows a Flatpack2 system
communicating via the CAN bus.
CAN Bus Addressing
3
4
5
6
7
8
3
4
5
6
7
8
20
21
22
23
24
36
37
38
39
40
52
53
54
55
56
68
69
70
71
72
84
85
86
87
88
120
End-of-Line
Resistor
Flatpack2 HE
Rectifiers
02
n
Battery Monitor
33
Battery string #1
Communication
9
10
11
12
13
14
9
10
11
12
13
14
25
26
27
28
29
30
41
42
43
44
45
46
57
58
59
60
61
62
73
74
75
76
77
78
89
90
91
92
93
94
Load Monitor
120
End-of-Line
49
Resistor
Shunts
Fuses
356825.103, 2v0 -2011-09
15
16
15
16
<< ID #
31
32
<< ID #
47
48
<< ID #
63
64
<< ID #
79
80
<< ID #
95
96
<< ID #
111 112
<< ID #
Current Monitoring
Sense Inputs
Fuse Monitoring
Configurable Inputs
Advertisement
Table of Contents
Need help?
Do you have a question about the Flatpack2 and is the answer not in the manual?