Inxpect LBK System User Manual

l Always restart prevention: even when the system is in No alarm status, the sensor has the field of
vision and the sensitivity of the Alarm status
For example, if a sensor is set up with a 50° field of vision and always the access detection security function,
the sensor will still have a 50° field of vision both in the Alarm status and in the No alarm status.
WARNING! If the access detection function is always selected, additional safety measures must be
introduced to ensure the restart prevention function.
Note: in the linear barrier configuration, both functions are selected by default.
4.3 Access detection function
4.3.1 Description
The function de-energizes the safety relays and prevents the machinery from restarting if motion is detected
in the system stopping area.
For the access detection function the sensor can be set with a 50° or a 110° field of vision. For details, see
"Sensor field of vision" on page26.
WARNING! The stopping area may not correspond to the defined dangerous area according to the
risk assessment. Calculate the actual dimensions based on the field of vision of the single sensor
(see "Sensor position" on page25) and perform the validation of the function (see "Validate safety
functions" on page49). If necessary, implement additional safety measures.
Note: for linear barrier application, the stopping area is calculated automatically by the Inxpect Safety application based on the set
dimensions of the dangerous area and the configuration of the sensors.
4.3.2 Pre-alarm area
A pre-alarm area can be configured, where if the machinery is functioning and the system detects motion,
the dedicated auxiliary output relay closes. For example, this is useful for connecting a light or acoustic
signal. The pre-alarm area is defined through the Inxpect Safety application.
4.4 Restart prevention function
4.4.1 Description
The function maintains safety relays de-energized and prevents the machinery from restarting if motion is
detected in the system stopping area.
The function detects movements of just a few millimeters, such as breathing movements (with normal
breathing or apnea of no more than 5 seconds), and the movements necessary for a person to remain in
balance in an upright or squatting position.
WARNING! The stopping area may not correspond to the defined dangerous area according to the
risk assessment. Calculate the actual dimensions based on the field of vision of the single sensor
(see "Sensor position" on page25) and perform the validation of the function (see "Validate safety
functions" on page49). If necessary, implement additional safety measures.
Note: for linear barrier application, the stopping area is calculated automatically by the Inxpect Safety application based on the set
dimensions of the dangerous area and the configuration of the sensors.
4.4.2 Function limits
The coverage of the restart prevention function is defined by the geometry of the field of vision. The field of
vision of the sensor depends on the inclination and height of the sensor installation, see "Sensor position" on
page25.
For the restart prevention function, a sensor set with 50° field of vision has the same coverage as the 110°
field of vision.
NOTICE: during the configuration phase, take this aspect into consideration to avoid generating false alarms.
4.4.3 Cases of non-guaranteed function
Function is not guaranteed in the following cases:
4. Functioning principles
LBK System| Instruction manual v1.3 SEP 2019 |LBK-System_instructions_en v1.3|© 2018-2019 Inxpect SpA
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Inxpect LBK System Specifications

General

Brand	Inxpect
Model	LBK System
Category	Safety Equipment
Language	English