HIMA HIMax - System Bus

HIMax System 3 Product Description
HI 801 001 E Rev. 4.01 Page 19 of 122
NOTE
Controller damage due to overcurrent!
Protect each base plate pre-fusing it against currents higher than 63 A!
The modules monitor both operating voltages. Use the SILworX programming tool to
display the voltage level and evaluate it for programming reactions.
Estimating the Required Power
Use a rule of thumb to estimate the power required for the power supply.
P
Total
= n
CPU
*35 + n
Modules
*20 + n
Fans
*20 +P
External
P
Total
: Total required power
n
CPU
: Number of processor modules in use
N
Module
: Number of modules used without processor modules
n
Fans
: Number of fans in use. Each fan rack contains 2, 3 or 4 fans.
P
External
: 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 as specified in the corresponding manuals. The power consumption
values of the other consumer loads are 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 is 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. These cables must be inserted in the