Siemens ET 757 E Series Instrucciones de operaciones descargar pdf (Pagina 117)

Commissioning and optimization (software)

7.5 Commissioning of the fail-safe functions

ET 200pro FC

Operating Instructions, 11/2007, A5E01100763B AA

117

When a password is entered (5 digits without leading zeros), it is compared to the password

stored in r9760.

If it is correct, i.e., if the two passwords match, access is granted.

If the password is incorrect, the parameters for fail-safe functions are disabled and the user

has to exit the commissioning mode for fail-safe functions manually using parameter

P3900 = 11. Parameter P3900 = 11 clears all previous changes that have been made to the

parameters for fail-safe functions.

Checksums

All parameters for fail-safe functions are verified with the aid of checksums, which guarantee

the integrity of the data stored in the drive processor's memory.

There are four checksums, two for each processor:

● r9798 - Current checksum for P1

● P9799 - Reference checksum for P1

● r9898 - Current checksum for P2

● P9899 - Reference checksum for P2

7.5.1 General information on acceptance tests

Description

In order to check the safety function parameters, an acceptance test must be carried out

after commissioning, after a reset and also whenever changes are made to a fail-safe

parameter data set associated with safety functions (e.g., via MMC). The acceptance test

must be logged and documented using appropriate means. This section contains an

example of a duly completed acceptance report. Acceptance reports must be archived using

appropriate means.

Acceptance test

An acceptance test must be carried out by the machine manufacturer in respect of any

safety functions that are enabled on the system.

Authorized person, acceptance certificate

Each of the safety functions must be checked by the relevant authorized personnel. Each

check must be documented/logged in an acceptance report and then signed off. The

acceptance report must be enclosed with or attached to the system's log book.

In this context, the term "authorized personnel" refers to any member of the machine

manufacturer's personnel with the requisite training and knowledge to carry out a safety

function acceptance test correctly.

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Siemens ET 757 E Series Instrucciones de operaciones Pagina 117