Honeywell SYA14 Series Manual page 557

2.4.4 Override function
The override function is mainly used when the muting module is used in the
conveyor mode. The override function allows the evacuation of an object if it
accidentally remains in the detection field of the protective equipment after a muting
sequence. Two push-buttons P/B and P/B2 must be connected on the appropriate
terminals to manually start a muting sequence. The muting sequence is interrupted
as soon as the detection field is cleared, and the OSDs outputs of the module
switches ON automatically.
OVERRIDE PUSH-BUTTONS LOCATION
•
Access to these push-buttons shall be restricted to the people allowed to
intervene in case of problem. The operators shall not be able to use these push-
buttons which shall be kept under lock and key (2 key selector switches may be used
as an alternative).
•
Moreover, the allowed person shall have a wide visibility on the installation and
permanently check that nobody enters the dangerous area while the muting
sequence is manually performed.
Failure to comply with these instructions could result in death or serious
injury.
OVERRIDE FUNCTION CONDITIONS
•
The override function is only allowed if the detection field of the protective
equipment is interrupted.
•
Contacts of the two push-buttons must be closed within a time frame set
between 8 ms and 1 s. They must remain closed for 100 ms as a minimum.
MUTING LAMP FAILURE
If the muting lamp fails, the release of the protection field does not lead to the
automatic restart of the module. However, the manual restart is possible and leads
to the closing of the OSDs outputs (refer to chapter 4.8.3 Muting lamp output).
107004-15 EN FR26 ROW 0899 Printed in France 23