ABB AC500-S Handbuch Seite 307

AC500-S Sicherheitshandbuch, V1.0.1
Normen
CD IEC 62046/Ed. 1:
2005
EN 954-1:1996
ISO 12100-2: 2003
Jegliche Vervielfältigung, Verwendung oder Weitergabe an Dritte ist ohne ausdrückliche Genehmigung streng verboten.
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Anforderungen
5.5.1: ... an indicator to show when the muting function is active can be
necessary.
The muting function shall be initiated and terminated automatically ... Incor-
rect signals, sequence, or timing of the muting sensors or signals shall not
allow a mute condition. It shall not be possible to initiate the muting function
when:
– the protective equipment OSSDs are in the OFF-state;
– the protective equipment is in the lock-out condition.
- initiation of the muting function by two or more independent muting sen-
sors such that a single fault cannot cause a muted condition;
- termination of the muting function by two or more independent muting
sensors such that deactivation of one sensor will terminate the muting func-
tion;
- use of timing and sequence control of the muting sensors to ensure cor-
rect muting operation;
5.5.3: The following measures shall be considered:...
- limiting muting to a fixed time that is only sufficient for the material to
pass through the detection zone. When this time is exceeded, the muting
function should be cancelled and all hazardous movements stopped;
Annex F.2 Four beams – timing control: (see also Fig. F.2.4): The monitor-
ing of the muting function is based on time limitation between the actuation
of the sensors S1 [in this document MS_11] and S2 [in this document
MS_12] and between the actuation of sensors S3 [in this document MS_21]
and S4 [in this document MS_22]. A maximum time limit of 4 sec. is rec-
ommended. The muting function is initiated by the two sensors S1, S2 and
maintained by the two sensors S3, S4; this means that for a certain time all
the four sensors are activated. The muting function is terminated when S3
or S4 is deactivated.
Annex F.5: Methods to avoid manipulation of the muting function: ... use a
muting enable command generated by the control system of the machine
that will only enable the muting function when needed by the machine cy-
cle.
5.4 Manual reset
4.11.4: Restart following power failure/spontaneous restart
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