F35 HIMA Ethernet Connection HIMATRIX Redundancy Design

Description

F35 The 5V DC power supply does not have to be wired separately as it is al

ready installed as part of the subrack.

The 5 V DC power is needed by the CPU, the control of the interfaces, and

the I/O modules. It is generated by a clocked 24 V DC/5 V DC power sup

ply module bearing the F 7130A identification. The subrack is equipped

with two power supply modules. The power supply modules are paral

leled. If one of them fails, F35 the other supplies the PES.

The 5 V DC output voltage of the power supply modules (for the CPU, I/

O, and the interfaces) are monitored on the central unit checking under

voltage and failure.

In case of a faulty power supply module the operating system supplies the

user’s program via a system variable with this information.

F35 In case the 5 V DC system power fails hardware clock and RAM on the

central module are buffered by a lithium battery which is also on the cen

tral unit.

– F35 two clock-synchronised micro processors

– each mikroprocessor with an own memory, one processor operates

with real data and program and the other one with inverted data and

program

– testable hardware comparer for all the external accesses of both micro

processors, in case of a fault the F35 watch dog will be set to the safe state

and the status of the processor is announced

– Flash-EPROMs of the program memory for the operating system and

the user’s program usable for min. 100.000 writing cycles

– F35 Data memory in sRAM

– Multiplexer to connect I/O bus, DPR and redundant CU

– Battery backup of the sRAMs via batteries on the central module with

monitoring and on the bus board

– 2 interfaces RS 485 with galvanic isolation. Transm. rate: max. 57600

bps. Set to 9600 bps and to 57600 bps by switch, or setting also of

other transm. rates by software (the software values have priority)

– Diagnostic display and 2 LEDs for information out of the system, I/O

level and project

– Dual Port RAM for fast memory access to the second central module

– hardware clock, battery backed

– I/O bus logic and connection to the input-/output modules

– Fail-safe watchdog

– power supply monitoring, testable (5 V system voltage)

– Battery monitoring

3.7.3 Mechanical Structure and Design

The data sheet of the B 4233-2 assembly kit shows the mechanical struc

ture and design of the H41q-HRS PES.

3.7.4 24 V DC Supply and Distribution

The supply voltage may be fed two times to the system H41q-HRS (see

also B 4233-2, wiring assembly kit and chapter 3.8, I/O Level).

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