Honeywell SYA14 Series Manual page 573

TIMING CONDITIONS
•
The 8 ms minimum time difference between the two SMs inputs guarantees the
detection of a permanent short circuits of one of the SMs inputs. Physically, the 2
sensors must be slightly apart.
•
If a new transition of a sensor SM occurs during a muting sequence, the muting
sequence is immediately stopped to avoid the permanent muting of the safety function.
The relative position of sensors SMs and the protective equipment ESPE defines a
minimum distance between 2 successive moving objects.
•
In the conveyor mode, the object must interrupt the safety light curtain detection
beams, before releasing both sensors SMs and 6s max. after the actuation of the
second sensor SMs.
3.2.2 Use in the press mode
FACTORY SETTINGS
•
T
he muting module is set in the conveyor mode on delivery.
•
Select the press mode on machines where the operator carries out manual
operations during non dangerous phases of the machine working cycle (see chapters
2.4.1 Selection of the appropriate mode).
IMPROPER USE OF THE MUTING MODULE
NEVER mute the protective equipment during a dangerous phase of the machine
working cycle.
Failure to comply with these instructions could result in death or serious injury.
The muting module can be used on any kind of machine to mute the protective
equipment beyond dangerous phases of the working cycle, when the power must be
maintained allthough the protective equipment is activated.
The following examples show how the muting module FF-SRM can be used on a
mechanical press and on a hydraulic press. On a press, the safety light curtain can be
muted as soon as the press tool reaches the bottom dead center, allowing the operator
to unload the press during the opening stroke without causing the stoppage of the
machine.
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