6 Functionality Description
24 User’s Guide Smartpack Monitoring & Ctrl Unit,
350003.013, v5-2006-11
Plug-and-Play Rectifier
When a rectifier is hot plugged in a power shelf for the first time, the Smartpack
controller assigns the next available ID number to the rectifier, starting with “01”. This ID
number (or CAN bus address) and the rectifier’s serial number are stored in both
modules.
When a previously installed (hot plugged) rectifier is inserted in a power shelf, the
Smartpack controller “recognises” the module, and assigns the same ID to rectifier.
In other words, the controller and the rectifier “remember” the assigned ID and serial
numbers, even after removing and reinserting the rectifier in the shelf.
To achieve a more controlled ID assignment, you should always insert & hot-plug new
rectifiers in the indicated power shelf position, one module at a time, starting
with ID number 1, 2, 3 and so on. The sequence is indifferent after ID# 6. Read
chapter “Mains Phase Assignment versus Rectifier ID”, page 24.
The rectifiers’ power shelf positions vary with the type of AC mains and the type of power
shelves installed in your system. Refer to your system’s quick start guide and specific
documentation for more information.
Do not relocate already pre-installed rectifiers.
Mains Phase Assignment versus Rectifier ID
In systems with 3 phase AC feed, the Smartpack controller can be configured to report a
warning if one phase fails, and to report an alarm if two phases fail, for example.
The 230V phases of Flatpack2 systems’ mains AC feed are routed to the rectifiers’ inputs
in a special pattern that loads the 3 phases evenly. The routing of the phases is
implemented via internal wiring and the use of either 4AC Power Shelves
4
or 2AC
Power Shelves
5
. Refer to your system’s quick start guide and specific documentation
for more information.
To be able to display correct information about the phases, the Smartpack controller
must “know” which phase is connected to which rectifier ID number.
Flatpack2 DC power systems are shipped from factory with empty power shelves. The
rectifier modules are shipped in separate packaging, and you have to install the modules
in the correct position in the power shelves, with respect to their ID number (or CAN
bus address).
This relationship is very important, as the Smartpack controller always uses rectifier ID
01, 02 and 03 to monitor mains phase L1, L2 and L3 respectively. If these rectifiers
malfunction, rectifier ID 04, 05 and 06 will automatically take over.
For example: accidentally inserting a rectifier with ID 02 in a power shelf position
internally connected to mains phase L1, will cause the controller to monitor L1 “thinking“
it monitors L2. Then a phase 1 fault will be alarmed as a phase 2 fault.
Resetting the Number of Rectifiers
When a rectifier reset is activated, the number of rectifiers is recalculated, and only the
number of communicating modules at the moment will be counted.
For instance: in a Flatpack2 DC power system equipped with 10 rectifiers, rectifier with
ID number “04” malfunctions. If you insert rectifier ID#10 in the position of the failing
ID#04, and then activate a rectifier reset, the Smartpack controller recalculates the
number of communicating rectifiers to only 9. At the same time the controller reassigns
rectifier with ID#10 to ID#04, thus filling the gap.
4
4AC Power Shelves (Single AC feed: 4 AC inputs per shelf, each feeding 1 rectifier).
5
2AC Power Shelves (Dual AC feed: 2 AC inputs per shelf, each feeding 2 rectifiers).
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