system

HIMax System 3 Product Description
PTotal = nCPU*35 + nModules*20 + nFans*20 +Pexternal
PTotal : Total required power
nCPU: Number of processor modules in use
NModule: Number of modules used without processor modules
nFans: Number of fans in use. Each fan rack contains 2, 3 or 4 fans.
PExternal: Power delivered from the output modules to the connected actuators.
The following reference values are used in this formula:
� Power consumption of a HIMax processor module: approx. 35 W
� Power consumption of another HIMax module (except for processor module): approx.
20 W
� Power consumption of a fan: approx. 20 W
� Power consumption of the actuators connected to and supplied by the output modules
The power in watts required for one HIMax system is the result of this rough calculation.
For an exact calculation of the power required, use the power consumption values of the
individual modules and other consumer loads as specified in the corresponding data sheets
or manuals.
3.2 System Bus
The HIMax system operates with two redundant system busses, system bus A and system
bus B.
The system busses run within a base plate. The module is connected with the system busses
by inserting it into the base plate. System busses A and B interconnect the modules via
the system bus modules. The failure of one module does not affect the connections to remaining
modules.
The system bus connection to the modules are electrically isolated from the base plate. An
insulation voltage of at least 1 500 V in ensured between the processor module and each
I/O module.
A system bus module is required to manage a system bus. The system bus module in slot
1 operates system bus A and the system bus module in slot 2 operates system bus B.
i
If only one system bus module is inserted in the base plate, only one system bus is available!
If both system bus modules are used to operate the HIMax system, communication runs on
both system busses simultaneously.
If the HIMax system is composed of various base plates, use Ethernet patch cables to interconnect
the system busses on the base plates. Insert the cables in the RJ-45 socket located
on the connector boards of the system bus modules. To do this, connect the UP
socket of one base plate to the DOWN socket of the next base plate. System bus A and
system bus B must not be crossed.
Two adjacent base plates can be connected to one base plate.
HI 801 001 E Rev. 3.00 Page 20 of 104