Baumuller b maXX BMC-M-SAF-02, Operating Instructions Manual

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of 118
Operation Manual b maXX safe PLC BMC-M-SAF-02
Document no.: 5.07020.04
14
T
ROUBLESHOOTING AND
RECTIFICATION
This chapter describes the error indications of the b maXX safe PLC module. We will de-
scribe the meaning of each error indication and what you should do as a reaction.
14.1 Safety regulations
Observe the applicable safety regulations, see
Z
Safety
–
from page 17 onward.
14.2 Requirements on the personnel conducting the work
Personnel working with the b maXX System must be instructed in the safety regulations
and the operation of the system and be familiar with the proper operation of the system.
The reaction to error indications and statuses in particular requires special knowledge
which the operator must have. In the following, we will inform you of the various malfunc-
tions and the resulting error messages. The malfunctions can be caused by either me-
chanical or electrical problems.
14.3 Error diagnosis
In order to achieve the degree of diagnostic coverage described in the chapter
Z
Safety-
related parameters for 20 years of operation
–
from page 27 onward, the control system
contains software functions which are executed as cyclical self-tests to detect hardware
failures.
14.3.1 Detecting internal device errors by using self-tests
m
The random access memory (RAM) of the safety control is tested by a cyclical RAM
test.
m
Non-RAM memory (Flash) of the safety control is tested by a cyclical CRC test.
m
Safety-relevant power sources are monitored for over-voltage and low voltage.